List of works - Josef Breu

3,4-diazanorcaradiene als Vorstufen neuer stabiler Azomethinylide

A Route to Microporous Materials through Oxidative Pillaring of Micas

scholarly article by Alexander Baumgartner et al published 15 February 2008 in Angewandte Chemie International Edition

A facile polymer templating route toward high-aspect-ratio crystalline titania nanostructures

scientific article published on 29 May 2012

A new polymorph (IV) of benzamide: Structural characterization and mechanism of the I↔IV phase transition

article

Absolute configuration of (-)-4-(3,4-dichlorophenyl)-4-(2-pyridyl)butanoic acid: essential information to determine crucial steric features of arpromidine-type histamine H2 receptor agonists

scientific article

Access to Ordered Porous Molybdenum Oxycarbide/Carbon Nanocomposites

scientific article published on 09 November 2012

Amphiphilic iron(ii) spin crossover coordination polymers: crystal structures and phase transition properties

Analyzing the influence of particle size and stiffness state of the nanofiller on the mechanical properties of epoxy/clay nanocomposites using a novel shear-stiff nano-mica

Anisotropic Thermal Transport in Spray-Coated Single-Phase Two-Dimensional Materials: Synthetic Clay Versus Graphene Oxide

scientific article published on 10 April 2020

Applying the flame retardant LDH as a Trojan horse for molecular flame retardants

article

Arene-arene stacking in the revised structure of 2,2'-bipyridinium hexafluorophosphate

scientific article published on 11 April 2002

BaFe1-xTaxO3-δ – A material for temperature independent resistive oxygen sensors

Barrier Properties of Synthetic Clay with a Kilo-Aspect Ratio

scientific article published on 01 December 2010

Behind Crime Scenes: The Crystal Structure of Commercial Luminol

CO2gas barrier properties in polymer nanocomposite coatings containing Li-hectorite clays

Catalytic activity of nanoalloys from gold and palladium

scientific article published on 28 March 2012

Charge Homogeneity in Synthetic Fluorohectorite

article

Chiral Recognition among Tris(diimine)-metal Complexes. 9. Crystal Structure Prediction for the Chiral Molecular Salt [Ru(bpy)3](PF6)2

Chirale Erkennung bei Trisdiimin -Metallkomplexen: 1. Strukturen von Tris-(3,3?-bi-1,2,4-triazin)eisen(II)-Komplexen

Clay-based nanocomposite coating for flexible optoelectronics applying commercial polymers

scientific article

Clinical wastewater treatment: Photochemical removal of an anionic antibiotic (ciprofloxacin) by mesostructured high aspect ratio ZnO nanotubes

scholarly article by Carina Bojer et al published May 2017 in Applied Catalysis B: Environmental

Co-crystallisation of benzoic acid with sodium benzoate: the significance of stoichiometry

article

Completely Miscible Polyethylene Nanocomposites

article

Complexing agent assisted synthesis of high aspect ratio Fe3+/Mg2+ layered double hydroxides

Composites of Metal Nanoparticles and TiO2Immobilized in Spherical Polyelectrolyte Brushes

Constant Volume Gate-Opening by Freezing Rotational Dynamics in Microporous Organically Pillared Layered Silicates

scientific article

Controlled Exfoliation of Layered Silicate Heterostructures into Bilayers and Their Conversion into Giant Janus Platelets

scientific article published on 3 May 2016

Core-crosslinked block copolymernanorods as templates for grafting [SiMo12O40]4–Keggin ions

article published in 2008

Covalent Grafting to μ-Hydroxy-Capped Surfaces? A Kaolinite Case Study

Crystal Engineering as a Tool for Directed Radiationless Energy Transfer in Layered {Λ-[Ru(bpy)3]Δ-[Os(bpy)3]}(PF6)4

scientific article published in 2000

Crystal Structure offac−Ir(ppy)3and Emission Properties under Ambient Conditions and at High Pressure†

scientific article published in April 2005

Crystal structure prediction could have helped the experimentalists with polymorphism in benzamide

Deformation Measurements on Thin Clay Tactoids

Digital Programming Graphene Oxide Liquid Crystalline Hybrid Hydrogel by Shearing Microlithography

scientific article published on 21 January 2020

Direct Synthesis of Inverse Hexagonally Ordered Diblock Copolymer/Polyoxometalate Nanocomposite Films

scientific article published in 2012

Distributed Electric Field Induces Orientations of Nanosheets to Prepare Hydrogels with Elaborate Ordered Structures and Programmed Deformations

scientific article published on 20 October 2020

Encapsulation of Functional Organic Compounds in Nanoglass for Optically Anisotropic Coatings

article

Encapsulation of fragrance in aqueous emulsions by delaminated synthetic hectorite

scientific article published on 03 September 2020

Facile Scalable Synthesis of Rectorites

Facile and scalable one-step production of organically modified graphene oxide by a two-phase extraction

article

Facile large-scale synthetic route to monodisperse ZnO nanocrystals

Fehlordnung bei Smectiten in Abhängigkeit vom Zwischenschichtkation

Formation of Ultrathin Birnessite-Type Nanoparticles Immobilized on Spherical Polyelectrolyte Brushes†

Fundamental theoretical and practical investigations of the polymorph formation of small amphiphilic molecules, their co-crystals and salts

Gas-phase Preparation of SO3-Graphite: Host-Exchange and Exfoliation

Gradient-Structured Nonflammable Flexible Polymer Membranes

scientific article published on 12 March 2019

Hierarchically porous tungsten oxidenanotubes with crystalline walls made of the metastable orthorhombic polymorph

scholarly article by Martin Schieder et al published 2013 in Journal of Materials Chemistry A

High-Barrier, Biodegradable Food Packaging

scholarly article by Christoph Habel et al published 4 September 2018 in Macromolecular Materials and Engineering

Homogeneous precipitation by formamide hydrolysis: synthesis, reversible hydration, and aqueous exfoliation of the layered double hydroxide (LDH) of Ni and Al.

scientific article published on October 2010

How to maximize the aspect ratio of clay nanoplatelets

article

Hybrid Janus particles based on polymer-modified kaolinite

Impact of large aspect ratio, shear-stiff, mica-like clay on mechanical behaviour of PMMA/clay nanocomposites

Improvement of thermal and mechanical properties of a phenolic resin nanocomposite byin situformation of silsesquioxanes from a molecular precursor

In Depth Insights into the Key Steps of Delamination of Charged 2D Nano Materials.

scientific article

In Situ Formation of Ag Nanoparticles in Spherical Polyacrylic Acid Brushes by UV Irradiation

article published in 2007

In-Plane Modulus of Singular 2:1 Clay Lamellae Applying a Simple Wrinkling Technique

Increasing time of ignition for PS-clay nanocomposites filled with [Fe(bpy)3]2+-modified hectorite

Influence of Cation Size on the Co-crystallisation of Benzoic Acid with Different Benzoates

Influence of Particle Size on Toughening Mechanisms of Layered Silicates in CFRP

scientific article published on 22 May 2020

Intumescent-like behavior of polystyrene synthetic clay nanocomposites

Large Scale Self-Assembly of Smectic Nanocomposite Films by Doctor Blading versus Spray Coating: Impact of Crystal Quality on Barrier Properties

Large scale melt synthesis in an open crucible of Na-fluorohectorite with superb charge homogeneity and particle size

Large-Scale, Low-Cost Fabrication of Janus-Type Emulsifiers by Selective Decoration of Natural Kaolinite Platelets

scientific article published on 27 December 2011

Layer charge robust delamination of organo-clays

scholarly article in RSC Advances, vol. 8 no. 50, 2018

Layering-Triggered Delayering with Exfoliated High-Aspect Ratio Layered Silicate for Enhanced Gas Barrier, Mechanical Properties, and Degradability of Biodegradable Polymers

scientific article published on 27 May 2020

Light-steered locomotion of muscle-like hydrogel by self-coordinated shape change and friction modulation

scientific article published on 14 October 2020

Lightweight Ultra-High Barrier Liners for Helium and Hydrogen

scientific article published on 06 May 2020

Melt Synthesis and Characterization of Synthetic Mn-Rich Tainiolite

Microphase Separation with Small Amphiphilic Molecules: Crystal Structure of Preservatives Sodium Benzoate (E 211) and Potassium Benzoate (E 212)

Microphase separation upon crystallization of small amphiphilic molecules: ‘low’ temperature form II of sodium benzoate (E 211)

Microporous Organically Pillared Layered Silicates (MOPS): A Versatile Class of Functional Porous Materials

scientific article published on 29 November 2018

Microporous PILCs — Synthesis, pillaring mechanism and selective cation exchange

Modification of kaolinite by Grafting of siderophilic ligands to the external octahedral surface

Mössbauerite as Iron-Only Layered Oxyhydroxide Catalyst for WO3 Photoanodes

scientific article published on 16 July 2019

Nanoparticles Supported on Sub-Nanometer Oxide Films: Scaling Model Systems to Bulk Materials

scientific article published on 08 December 2020

Nanoplatelets of sodium hectorite showing aspect ratios of ≈20,000 and superior purity.

scientific article

Nucleation-Controlled Crystallization of a New, Spontaneously Resolved Solvate of [Ru(bpy)3](PF6)2 and its Desolvation Reaction

scientific article published on 01 October 2002

On the importance of specific interface area in clay nanocomposites of PMMA filled with synthetic nano-mica

scholarly article by Mazen Ziadeh et al published August 2014 in Polymer

Onset of Osmotic Swelling in Highly Charged Clay Minerals

scientific article published on 05 July 2018

Ordered Heterostructures of Two Strictly Alternating Types of Nanoreactors

article

Osmotic Delamination: A Forceless Alternative for the Production of Nanosheets Now in Highly Polar and Aprotic Solvents

scientific article published on 27 December 2020

Osmotic Swelling of Sodium Hectorite in Ternary Solvent Mixtures: Nematic Liquid Crystals in Hydrophobic Media

scientific article published on 31 March 2020

Oxygen Evolution Catalysis with Mössbauerite - A Trivalent Iron Only Layered Double Hydroxide.

scientific article published on 20 April 2018

Packing of Cylindrical Keggin-Type Polyoxometalate Hybrid Micelles as a Function of Aspect Ratio

scientific article published in 2012

Parallel and Perpendicular Alignment of Anisotropic Particles in Free Liquid Microjets and Emerging Microdroplets

scientific article published on 13 April 2018

Polymorphism in Benzamide: Solving a 175-Year-Old Riddle

article

Polymorphism in co-crystals: a metastable form of the ionic co-crystal 2 HBz·1 NaBz crystallised by flash evaporation

article

Porosity of Pillared Clays Studied by Hyperpolarized 129Xe NMR Spectroscopy and Xe Adsorption Isotherms

scientific article published on 03 January 2013

Preparation of microcellular low-density PMMA nanocomposite foams: Influence of different fillers on the mechanical, rheological and cell morphological properties

article

Pressure-Induced Water Insertion in Synthetic Clays

scientific article published on 27 February 2013

Purely Physisorption-Based CO-Selective Gate-Opening in Microporous Organically Pillared Layered Silicates

scientific article published on 27 November 2017

Purely Physisorption-Based CO-Selective Gate-Opening in Microporous Organically Pillared Layered Silicates

Pushing the Boundaries of Interfacial Sensitivity in Graphene FET Sensors: Polyelectrolyte Multilayers Strongly Increase the Debye Screening Length

Quasi-epitaxial growth of [Ru(bpy)3 ](2+) by confinement in clay nanoplatelets yields polarized emission.

scientific article

Rapid Low-Dimensional Li+ Ion Hopping Processes in Synthetic Hectorite-Type Li0.5[Mg2.5Li0.5]Si4O10F2

scientific article published on 05 August 2020

Realisation of truly microporous pillared clays

scientific article published on 26 November 2007

Relative Humidity-Induced Reversible Hydration of Sulfate-Intercalated Layered Double Hydroxides

Selective Template Removal by Thermal Depolymerization to Obtain Mesostructured Molybdenum Oxycarbide

Shaping Colloidal Rutile into Thermally Stable and Porous Mesoscopic Titania Balls

Shear stiff, surface modified, mica-like nanoplatelets: a novel filler for polymer nanocomposites

article

Significance of Aspect Ratio on Efficiency of Layered Double Hydroxide Flame Retardants

Single Nanocrystals of Platinum Prepared by Partial Dissolution of Au-Pt Nanoalloys

scientific article

Single crystal structure refinement of one- and two-layer hydrates of sodium fluorohectorite

scholarly article in RSC Advances, vol. 2 no. 22, 2012

Single crystal structure refinement of tetramethylammonium-hectorite

Smectite fluorination and its impact on interlayer water content and structure: A way to fine tune the hydrophilicity of clay surfaces?

article

Space-Resolved In-Plane Moduli of Graphene Oxide and Chemically Derived Graphene Applying a Simple Wrinkling Procedure

scientific article published on 13 December 2012

Strategies for the selective loading of patchy worm-like micelles with functional nanoparticles

Structural Insights into Water-Based Spider Silk Protein-Nanoclay Composites with Excellent Gas and Water Vapor Barrier Properties.

scientific article published on 7 September 2016

Sub-micron pore size tailoring for efficient chiral discrimination

scientific article

Superior flame retardant by combining high aspect ratio layered double hydroxide and graphene oxide

Switching-on quantum size effects in silicon nanocrystals.

scientific article published on 3 December 2014

Synthese von dreidimensional geordneten Einlagerungsverbindungen des Hectorits

article published in 2004

Synthesis and single crystal structure refinement of the one-layer hydrate of sodium brittle mica

Synthesis of [Fe(L)(bipy)]nspin crossover nanoparticles using blockcopolymer micelles

article published in 2016

Synthesis, Structure, and Electric Conductivity of Ferrous Tainiolite and Its Oxidative Conversion into Coarse-Grained Swellable Smectite

article

Systematic evaluation of different types of graphene oxide in respect to variations in their in-plane modulus

scholarly article in Carbon, vol. 114, April 2017

Tailoring Shear-Stiff, Mica-like Nanoplatelets

scientific article published on 01 February 2010

Tailoring the Pore Sizes of Microporous Pillared Interlayered Clays through Layer Charge Reduction

article

Template Removal via Boudouard Equilibrium Allows for Synthesis of Mesostructured Molybdenum Compounds

scientific article published on 3 January 2017

Template-Directed Mild Synthesis of Anatase Hybrid Nanotubes within Cylindrical Core–Shell–Corona Polymer Brushes

Template-Directed Synthesis of Silica Nanowires and Nanotubes from Cylindrical Core–Shell Polymer Brushes

article published in 2012

Terrestrial solar radiation driven photodecomposition of ciprofloxacin in clinical wastewater applying mesostructured iron(III) oxide

scientific article published on 29 September 2020

The Largely Unknown Class of Microporous Hybrid Materials: Clays Pillared by Molecules

The Same at a First Glance: The Diffractogram of a New Polymorph of Anhydrous Sodium Luminolate Almost Perfectly Resembles the Diffraction Trace of an Already Known Polymorph

article by Thomas Martin et al published 28 January 2015 in Journal of inorganic and general chemistry

The crystal structure of the API Montelukast

Thermoanalytical Evidence of Metastable Molecular Defects in Form I of Benzamide

article

Towards a tunable pore size utilizing oxidative pillaring of the mica ferrous tainiolite

scientific article published in July 2009

Towards completely miscible PMMA nanocomposites reinforced by shear-stiff, nano-mica

scientific article published on 26 March 2014

Towards mesoporous Keggin-type polyoxometalates – systematic study on organic template removal

article

Transfer batch blending, an innovative solvent/solid assisted method for melt compounding to achieve good dispersion quality for polymer–clay-nanocomposites

Transition metals in micas: synthesis and characterization of Co-rich Cs-tainiolite

Tris(2,4,6-triamino-1,3,5-triazin-1-ium) Dihydrogenphosphate Monohydrogenphosphate Tetrahydrate

Tunable Exfoliation of Synthetic Clays

Tunable Thermoelastic Anisotropy in Hybrid Bragg Stacks with Extreme Polymer Confinement

scientific article published on 04 December 2019

Two-Step Delamination of Highly Charged, Vermiculite-like Layered Silicates via Ordered Heterostructures.

scientific article published on 28 April 2017

Two-dimensional diffraction from enantiopure and racemic monolayers of [Ru(bpy)3]2+ intercalated into synthetic fluorohectorite

article

UV-Cured, Flexible, and Transparent Nanocomposite Coating with Remarkable Oxygen Barrier

scientific article published on 19 March 2012

Ultralight, Soft Polymer Sponges by Self-Assembly of Short Electrospun Fibers in Colloidal Dispersions

Umlagerungen von 2,5-diarylsubstituierten dicyano[7,7-dimethyl-3,4-diazabicyclo[4.1.0]hept-2,4-dien-3-ium-3-yl]methaniden 3 in protischen solventien

Unmodified Clay Nanosheets at the Air-Water Interface

scientific article published on 29 December 2020

Water Dynamics in Hectorite Clays: Influence of Temperature Studied by Coupling Neutron Spin Echo and Molecular Dynamics

article

List of works by Josef Breu

3,4-diazanorcaradiene als Vorstufen neuer stabiler Azomethinylide

A Route to Microporous Materials through Oxidative Pillaring of Micas

A facile polymer templating route toward high-aspect-ratio crystalline titania nanostructures

A new polymorph (IV) of benzamide: Structural characterization and mechanism of the I↔IV phase transition

Absolute configuration of (-)-4-(3,4-dichlorophenyl)-4-(2-pyridyl)butanoic acid: essential information to determine crucial steric features of arpromidine-type histamine H2 receptor agonists

Access to Ordered Porous Molybdenum Oxycarbide/Carbon Nanocomposites

Amphiphilic iron(ii) spin crossover coordination polymers: crystal structures and phase transition properties

Analyzing the influence of particle size and stiffness state of the nanofiller on the mechanical properties of epoxy/clay nanocomposites using a novel shear-stiff nano-mica

Anisotropic Thermal Transport in Spray-Coated Single-Phase Two-Dimensional Materials: Synthetic Clay Versus Graphene Oxide

Applying the flame retardant LDH as a Trojan horse for molecular flame retardants

Arene-arene stacking in the revised structure of 2,2'-bipyridinium hexafluorophosphate

BaFe1-xTaxO3-δ – A material for temperature independent resistive oxygen sensors

Barrier Properties of Synthetic Clay with a Kilo-Aspect Ratio

Behind Crime Scenes: The Crystal Structure of Commercial Luminol

CO2gas barrier properties in polymer nanocomposite coatings containing Li-hectorite clays

Catalytic activity of nanoalloys from gold and palladium

Charge Homogeneity in Synthetic Fluorohectorite

Chiral Recognition among Tris(diimine)-metal Complexes. 9. Crystal Structure Prediction for the Chiral Molecular Salt [Ru(bpy)3](PF6)2

Chirale Erkennung bei Trisdiimin -Metallkomplexen: 1. Strukturen von Tris-(3,3?-bi-1,2,4-triazin)eisen(II)-Komplexen

Clay-based nanocomposite coating for flexible optoelectronics applying commercial polymers

Clinical wastewater treatment: Photochemical removal of an anionic antibiotic (ciprofloxacin) by mesostructured high aspect ratio ZnO nanotubes

Co-crystallisation of benzoic acid with sodium benzoate: the significance of stoichiometry

Completely Miscible Polyethylene Nanocomposites

Complexing agent assisted synthesis of high aspect ratio Fe3+/Mg2+ layered double hydroxides

Composites of Metal Nanoparticles and TiO2Immobilized in Spherical Polyelectrolyte Brushes

Constant Volume Gate-Opening by Freezing Rotational Dynamics in Microporous Organically Pillared Layered Silicates

Controlled Exfoliation of Layered Silicate Heterostructures into Bilayers and Their Conversion into Giant Janus Platelets

Core-crosslinked block copolymernanorods as templates for grafting [SiMo12O40]4–Keggin ions

Covalent Grafting to μ-Hydroxy-Capped Surfaces? A Kaolinite Case Study

Crystal Engineering as a Tool for Directed Radiationless Energy Transfer in Layered {Λ-[Ru(bpy)3]Δ-[Os(bpy)3]}(PF6)4

Crystal Structure offac−Ir(ppy)3and Emission Properties under Ambient Conditions and at High Pressure†

Crystal structure prediction could have helped the experimentalists with polymorphism in benzamide

Deformation Measurements on Thin Clay Tactoids

Digital Programming Graphene Oxide Liquid Crystalline Hybrid Hydrogel by Shearing Microlithography

Direct Synthesis of Inverse Hexagonally Ordered Diblock Copolymer/Polyoxometalate Nanocomposite Films

Distributed Electric Field Induces Orientations of Nanosheets to Prepare Hydrogels with Elaborate Ordered Structures and Programmed Deformations

Encapsulation of Functional Organic Compounds in Nanoglass for Optically Anisotropic Coatings

Encapsulation of fragrance in aqueous emulsions by delaminated synthetic hectorite

Facile Scalable Synthesis of Rectorites

Facile and scalable one-step production of organically modified graphene oxide by a two-phase extraction

Facile large-scale synthetic route to monodisperse ZnO nanocrystals

Fehlordnung bei Smectiten in Abhängigkeit vom Zwischenschichtkation

Formation of Ultrathin Birnessite-Type Nanoparticles Immobilized on Spherical Polyelectrolyte Brushes†

Fundamental theoretical and practical investigations of the polymorph formation of small amphiphilic molecules, their co-crystals and salts

Gas-phase Preparation of SO3-Graphite: Host-Exchange and Exfoliation

Gradient-Structured Nonflammable Flexible Polymer Membranes

Hierarchically porous tungsten oxidenanotubes with crystalline walls made of the metastable orthorhombic polymorph

High-Barrier, Biodegradable Food Packaging

Homogeneous precipitation by formamide hydrolysis: synthesis, reversible hydration, and aqueous exfoliation of the layered double hydroxide (LDH) of Ni and Al.

How to maximize the aspect ratio of clay nanoplatelets

Hybrid Janus particles based on polymer-modified kaolinite

Impact of large aspect ratio, shear-stiff, mica-like clay on mechanical behaviour of PMMA/clay nanocomposites

Improvement of thermal and mechanical properties of a phenolic resin nanocomposite byin situformation of silsesquioxanes from a molecular precursor

In Depth Insights into the Key Steps of Delamination of Charged 2D Nano Materials.

In Situ Formation of Ag Nanoparticles in Spherical Polyacrylic Acid Brushes by UV Irradiation

In-Plane Modulus of Singular 2:1 Clay Lamellae Applying a Simple Wrinkling Technique

Increasing time of ignition for PS-clay nanocomposites filled with [Fe(bpy)3]2+-modified hectorite

Influence of Cation Size on the Co-crystallisation of Benzoic Acid with Different Benzoates

Influence of Particle Size on Toughening Mechanisms of Layered Silicates in CFRP

Intumescent-like behavior of polystyrene synthetic clay nanocomposites

Large Scale Self-Assembly of Smectic Nanocomposite Films by Doctor Blading versus Spray Coating: Impact of Crystal Quality on Barrier Properties

Large scale melt synthesis in an open crucible of Na-fluorohectorite with superb charge homogeneity and particle size

Large-Scale, Low-Cost Fabrication of Janus-Type Emulsifiers by Selective Decoration of Natural Kaolinite Platelets

Layer charge robust delamination of organo-clays

Layering-Triggered Delayering with Exfoliated High-Aspect Ratio Layered Silicate for Enhanced Gas Barrier, Mechanical Properties, and Degradability of Biodegradable Polymers

Light-steered locomotion of muscle-like hydrogel by self-coordinated shape change and friction modulation

Lightweight Ultra-High Barrier Liners for Helium and Hydrogen

Melt Synthesis and Characterization of Synthetic Mn-Rich Tainiolite

Microphase Separation with Small Amphiphilic Molecules: Crystal Structure of Preservatives Sodium Benzoate (E 211) and Potassium Benzoate (E 212)

Microphase separation upon crystallization of small amphiphilic molecules: ‘low’ temperature form II of sodium benzoate (E 211)

Microporous Organically Pillared Layered Silicates (MOPS): A Versatile Class of Functional Porous Materials

Microporous PILCs — Synthesis, pillaring mechanism and selective cation exchange

Modification of kaolinite by Grafting of siderophilic ligands to the external octahedral surface

Mössbauerite as Iron-Only Layered Oxyhydroxide Catalyst for WO3 Photoanodes

Nanoparticles Supported on Sub-Nanometer Oxide Films: Scaling Model Systems to Bulk Materials

Nanoplatelets of sodium hectorite showing aspect ratios of ≈20,000 and superior purity.

Nucleation-Controlled Crystallization of a New, Spontaneously Resolved Solvate of [Ru(bpy)3](PF6)2 and its Desolvation Reaction

On the importance of specific interface area in clay nanocomposites of PMMA filled with synthetic nano-mica

Onset of Osmotic Swelling in Highly Charged Clay Minerals