June 20, 2021

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Zeolites and Zeolite-Like Materials

Zeolites and Zeolite-Like Materials
Author : Bert Sels
Publisher : Elsevier
Release Date : 2016-02-01
Category :
Total pages :610
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Zeolites and Zeolite-like Materials offers a comprehensive and up-to-date review of the important areas of zeolite synthesis, characterization, and applications. Its chapters are written in an educational, easy-to-understand format for a generation of young zeolite chemists, especially those who are just starting research on the topic and need a reference that not only reflects the current state of zeolite research, but also identifies gaps and opportunities. The book demonstrates various applications of zeolites in heterogeneous catalysis and biomass conversion and identifies the endless possibilities that exist for this class of materials, their structures, functions, and future applications. In addition, it demonstrates that zeolite-like materials should be regarded as a living body developing towards new modern applications, thereby responding to the needs of modern technology challenges, including biomass conversion, medicine, laser techniques, and nanomaterial design, etc. The book will be of interest not only to zeolite-focused researchers, but also to a broad scientific and non-scientific audience. Provides a comprehensive review of the literature pertaining to zeolites and zeolite-like materials since 2000 Covers the chemistry of novel zeolite-like materials such as Metal-Organic Frameworks (MOFs), Covalent Organic Frameworks (COFs), hierarchical zeolite materials, new mesoporous and composite zeolite-like micro/mesoporous materials Presents essential information of the new zeolite-like structures, with a balanced coverage of the most important areas of the zeolite research (synthesis, characterization, adsorption, catalysis, new applications of zeolites and zeolite-like materials) Contains chapters prepared by known specialists who are members of the International Zeolite Association

A New Strategy for Synthesizing Zeolites and Zeolite-like Materials

A New Strategy for Synthesizing Zeolites and Zeolite-like Materials
Author : Hyunjoo Lee,Mark E. Davis,California Institute of Technology. Division of Chemistry and Chemical Engineering
Publisher : Unknown
Release Date : 2005
Category : Electronic dissertations
Total pages :228
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Advances in Nanoporous Materials

Advances in Nanoporous Materials
Author : Anonim
Publisher : Elsevier
Release Date : 2009-10-16
Category : Science
Total pages :336
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Advances in Nanoporous Materials is a collection of comprehensive reviews of lasting value to the field. The contributions cover all aspects of nanoporous materials, including their preparation and structure, post-synthetic modification, characterization and use in catalysis, adsorption/separation, and all other fields of potential application, e.g., membranes, host/guest chemistry, environmental protection, electrochemistry, sensors, and optical devices. "Nanoporous materials" comprise all kinds of porous solids that possess pores in the range from about 0.2 nm up to 50 nm, irrespective of their chemical composition, their origin (natural or synthetic), and their amorphous or crystalline nature. Typical examples are zeolites and zeolite-like materials (e.g., crystalline microporous aluminophosphates and their derivatives), mesoporous oxides such as silica, metal organic frameworks, pillared clays, porous carbons, and related materials. State-of-the-art reviews keep coverage current Broad scope provides a full topical overview Contributions from renowned experts lend authority to the material

Zeolites and Zeolite-like Materials

Zeolites and Zeolite-like Materials
Author : Bert Sels,Leonid Kustov
Publisher : Elsevier
Release Date : 2016-07-29
Category : Science
Total pages :474
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Zeolites and Zeolite-like Materials offers a comprehensive and up-to-date review of the important areas of zeolite synthesis, characterization, and applications. Its chapters are written in an educational, easy-to-understand format for a generation of young zeolite chemists, especially those who are just starting research on the topic and need a reference that not only reflects the current state of zeolite research, but also identifies gaps and opportunities. The book demonstrates various applications of zeolites in heterogeneous catalysis and biomass conversion and identifies the endless possibilities that exist for this class of materials, their structures, functions, and future applications. In addition, it demonstrates that zeolite-like materials should be regarded as a living body developing towards new modern applications, thereby responding to the needs of modern technology challenges, including biomass conversion, medicine, laser techniques, and nanomaterial design, etc. The book will be of interest not only to zeolite-focused researchers, but also to a broad scientific and non-scientific audience. Provides a comprehensive review of the literature pertaining to zeolites and zeolite-like materials since 2000 Covers the chemistry of novel zeolite-like materials such as Metal-Organic Frameworks (MOFs), Covalent Organic Frameworks (COFs), hierarchical zeolite materials, new mesoporous and composite zeolite-like micro/mesoporous materials Presents essential information of the new zeolite-like structures, with a balanced coverage of the most important areas of the zeolite research (synthesis, characterization, adsorption, catalysis, new applications of zeolites and zeolite-like materials) Contains chapters prepared by known specialists who are members of the International Zeolite Association

Thermodynamic Study of Zeolites and Zeolite-like Materials

Thermodynamic Study of Zeolites and Zeolite-like Materials
Author : Lili Wu
Publisher : Unknown
Release Date : 2014
Category :
Total pages :129
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This dissertation is a thermodynamic study of zeolites and zeolite-like materials. The zeolite materials include alkali and alkaline earth cation (Li+, Na+, K+, Rb+, Cs+, Ca2+, Sr2+ and Pb2+) exchanged natrolite, transition metal cation (Mn2+, Co2+, Cu2+, Zn2+) exchanged zeolite A and zeolite Y, ITQ-33 (large pore Ge-zeolite) and zeolite beta polymorph C (BEC). The zeolite-like materials are hollandites substituted by Rb+, Cs+ and Sr2+. Zeolites form a large group of aluminosilicate porous materials. They continue receiving interest in terms of crystal structure, Si/Al ratio, cation effects, ion exchange, hydration, and technological applications, such as heterogeneous catalysis and heavy metal disposal. In this dissertation, thermodynamic properties of zeolites with different topology, pore size and especially various exchanged cations are investigated. The first part is about natrolite, which is a small pore (2.6 Å) zeolite mineral. It has been applied in industrial catalysis and waste water treatment. To answer several fundamental questions about Al/(Al+Si) ratio effects, abnormal rehydration behavior of K-NAT, Rb-NAT and Cs-NAT and cation effects, and also to explore the thermal behavior of natrolite and the factors that affect its persistence, a series of synthetic natrolites with different extra-framework cations (Li, Na, K, Rb, Cs, Ca, Sr and Pb) were investigated by differential scanning calorimetry and high temperature oxide melt solution calorimetry. The formation enthalpies from constituent oxides obtained from high temperature solution calorimetry align well with those observed previously for other zeolites. Their formation enthalpies become less exothermic with increasing ionic potential (Z/r) of the cations. The hydration enthalpies obtained from differential scanning calorimetry indicate that water binding becomes weaker with increasing cation size. A formation enthalpy model for hydrous zeolites similar to that for anhydrous zeolites was developed. The further analysis of results indicates cation effects are more important than hydration effects on stability. Large pore zeolites such as the ITQ series have attracted much attention for their accommodation of larger guest molecules and promising potential in catalysis. The synthesis of large pore zeolites can be realized by using several strategies, such as large and rigid organic structure directing agents (OSDAs); concentrated gels and fluoride media, especially with Ge substitution. To explore their application in industry, thermochemical study of their stability is important. In chapter 3, energetics of large pore Ge-zeolite ITQ-33 and pure silica zeolite beta polymorph C (BEC) with two types of OSDAs were studied. The enthalpies of formation from phases with the quartz structure (SiO2 and GeO2) have been determined. The BECs made with two different structure directing agents (SDA) show energetic difference of 4 kJ/mol due to structure defects. The enthalpy of formation of ITQ-33 (Ge/(Ge+Si) = 0.3) supports the energetic trends seen in other Ge-zeolites, namely the enthalpy of formation becomes more endothermic as the content of double four rings (D4R) increases. Also the energetic trend of porous materials versus molar volume is extended by the present data, with a diminishing destabilization for very open structures. Zeolites have good ion exchange capacity which offers a large area of study on various cations effects in different frameworks. An area of big interest is transition metal cation decorated zeolites for the double catalytic properties of transition metal cations and zeolite frameworks, and also the highly dispersed metal sites. To study the unique cation effect and energetic properties, in chapter 4, Mn, Co, Cu, Zn- exchanged zeolite A and Y were prepared and studied by thermogravimetry - differential scanning calorimetry (TG-DSC) and high temperature oxide melt solution calorimetry. All these transition metal zeolites could be synthesized by aqueous solution exchange methods. The thermodynamic results revealed an unusual trend of cation effects compared to alkali and alkaline earth containing zeolites. The formation enthalpies of Mn and Zn zeolites A and Y are less endothermic than those of Co and Cu-zeolites A and Y. Their relative stabilities are consistent with metal-oxygen bond lengths, and could be explained by the crystal field effects of transition metal ions. The enthalpies of exchange of transition metals for sodium in zeolites A and Y are strongly unfavorable. In the last part, Chapter 5, an aluminotitanate ceramic material, hollandite, that has a framework structure analogous to a zeolite is studied in terms of synthesis, structural characterization and energetics. With good tolerance for cation substitution, hollandite is a potential host to immobilize radioactive elements, particularly cesium and strontium fission products. In this study, Rb+, Cs+ and Sr2+ containing hollandite was synthesized using a sol-gel method and characterized by synchrotron XRD. Their enthalpies of formation were explored using high temperature oxide melt solution calorimetry. Their stabilities are similar but decrease slightly from Cs- to Rb- to Sr-hollandite.

Zeolite-Type Crystal Structures and their Chemistry. Framework Type Codes STO to ZON

Zeolite-Type Crystal Structures and their Chemistry. Framework Type Codes STO to ZON
Author : Reinhard X. Fischer,Werner Baur
Publisher : Springer
Release Date : 2013-01-11
Category : Science
Total pages :312
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Zeolites and zeolite-like materials became important because of their ion exchange capacities and their outstanding catalytic properties. Millions of tons of zeolites have been produced in the past years for the oil refining industry alone and, in even greater quantities, as ion-exchanging softening agents for detergents. Numerous other applications, e.g., in environmental protection, farming, gas separation, medicine, and pharmacy, are known, making zeolites almost a necessity for daily life. Consequently, there are many research activities dealing with zeolite properties and characterization. However, a strictly systematic description of zeolite-type crystal structures was not available but is now presented in this series of volumes. It is designed as a reference work for zeolite chemists and materials scientists, but it also serves as a tool to interpret structural similarities and to derive new structures from known topologies.

Microporous and other Framework Materials with Zeolite-Type Structures

Microporous and other Framework Materials with Zeolite-Type Structures
Author : W. H. Baur,R. X. Fischer
Publisher : Springer
Release Date : 2017-05-22
Category : Science
Total pages :534
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A strictly systematic description of zeolite-type crystal structures was not available but is now presented in this series of volumes. It is designed as a reference work for zeolite chemists and materials scientists, but it also serves as a tool to interpret structural similarities and to derive new structures from known topologies. Zeolites and zeolite-like materials became important because of their ion exchange capacities and their outstanding catalytic properties. Millions of tons of zeolites have been produced in the past years for the oil refining industry alone and, in even greater quantities, as ion-exchanging softening agents for detergents. Numerous other applications, e.g., in environmental protection, farming, gas separation, medicine, and pharmacy, are known, making zeolites almost a necessity for daily life. Consequently, there are many research activities dealing with zeolite properties and characterization.

Catalysis and Zeolites

Catalysis and Zeolites
Author : Jens Weitkamp
Publisher : Springer Science & Business Media
Release Date : 1999-06
Category : Science
Total pages :564
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Zeolites and zeolite-like microporous materials have been playing an ever-increasing role in heterogeneous catalysis for more than three decades. An impressive number of large-scale industrial processes in petroleum refining, petrochemistry and the manufacture of organic chemicals are nowadays carried out using zeolite catalysts, and the future of zeolites in industrial catalysis continues to be bright. Authored by an international team of renowned scientists, the seven chapters of this book present a comprehensive overview of the application of zeolites in industrial catalysis, while also providing a true scientific understanding of how zeolites are synthesized, modified and characterized, and putting special emphasis on shape-selective catalysis, which is a unique feature of zeolites.

Zeolites and Related Microporous Materials

Zeolites and Related Microporous Materials
Author : Jens Weitkamp
Publisher : Unknown
Release Date : 1994
Category : Molecular sieves
Total pages :2371
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These proceedings, comprising 7 plenary lectures, 100 oral and 175 poster presentations, reflect present activities in the field of microporous materials. The International Zeolite Conferences are devoted to all aspects of zeolite science and technology. The term "zeolite" is to be understood in its broadest sense comprising all kinds of crystalline microporous materials regardless of their composition (e.g. aluminosilicates and other metallosilicates, silica, aluminophosphates, gallophosphates etc.), occurring in nature or synthesized by man. Mesoporous silica, aluminosilicates and other metallosilicates, as recently discovered are also included. Zeolite catalysis continues to be an area of particular interest, not only the classical hydrocarbon conversions but also zeolite catalysis of oxidation reactions, formation of a greater variety of organic compounds and environmental catalysis. Much work has been done on the synthesis of zeolites and zeolite-like materials, which is reflected in the large number of contributions to these proceedings. Improvement of techniques for investigation has stimulated interest in adsorption and diffusion studies. Other areas enjoying increasing attention are modelling, theory, and novel materials.

Zeolite-Type Crystal Structures and their Chemistry. 41 New Framework Type Codes

Zeolite-Type Crystal Structures and their Chemistry. 41 New Framework Type Codes
Author : Reinhard X. Fischer,Werner Baur
Publisher : Springer
Release Date : 2014-01-20
Category : Science
Total pages :427
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Zeolites and zeolite-like materials became important because of their ion exchange capacities and their outstanding catalytic properties. Millions of tons of zeolites have been produced in the past years for the oil refining industry alone and, in even greater quantities, as ion-exchanging softening agents for detergents. Numerous other applications, e.g., in environmental protection, farming, gas separation, medicine, and pharmacy, are known, making zeolites almost a necessity for daily life. Consequently, there are many research activities dealing with zeolite properties and characterization. However, a strictly systematic description of zeolite-type crystal structures was not available but is now presented in this series of volumes. It is designed as a reference work for zeolite chemists and materials scientists, but it also serves as a tool to interpret structural similarities and to derive new structures from known topologies.

Zeolites and Related Microporous Materials: State of the Art 1994

Zeolites and Related Microporous Materials: State of the Art 1994
Author : W. Hölderich,H.G. Karge,J. Weitkamp,H. Pfeifer
Publisher : Elsevier
Release Date : 1994-07-08
Category : Technology & Engineering
Total pages :2363
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These proceedings, comprising 7 plenary lectures, 100 oral and 175 poster presentations, reflect present activities in the field of microporous materials. The International Zeolite Conferences are devoted to all aspects of zeolite science and technology. The term zeolite is to be understood in its broadest sense comprising all kinds of crystalline microporous materials regardless of their composition (e.g. aluminosilicates and other metallosilicates, silica, aluminophosphates, gallophosphates etc.), occurring in nature or synthesized by man. Mesoporous silica, aluminosilicates and other metallosilicates, as recently discovered are also included. Zeolite catalysis continues to be an area of particular interest, not only the classical hydrocarbon conversions but also zeolite catalysis of oxidation reactions, formation of a greater variety of organic compounds and environmental catalysis. Much work has been done on the synthesis of zeolites and zeolite-like materials, which is reflected in the large number of contributions to these proceedings. Improvement of techniques for investigation has stimulated interest in adsorption and diffusion studies. Other areas enjoying increasing attention are modelling, theory, and novel materials.

Narrow-pore Zeolites and Zeolite-like Adsorbents for CO2 Separation

Narrow-pore Zeolites and Zeolite-like Adsorbents for CO2 Separation
Author : Anonim
Publisher : Unknown
Release Date : 2014
Category :
Total pages :94
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Microporous and other Framework Materials with Zeolite-Type Structures

Microporous and other Framework Materials with Zeolite-Type Structures
Author : W. H. Baur,R. X. Fischer
Publisher : Springer
Release Date : 2017-05-22
Category : Science
Total pages :534
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A strictly systematic description of zeolite-type crystal structures was not available but is now presented in this series of volumes. It is designed as a reference work for zeolite chemists and materials scientists, but it also serves as a tool to interpret structural similarities and to derive new structures from known topologies. Zeolites and zeolite-like materials became important because of their ion exchange capacities and their outstanding catalytic properties. Millions of tons of zeolites have been produced in the past years for the oil refining industry alone and, in even greater quantities, as ion-exchanging softening agents for detergents. Numerous other applications, e.g., in environmental protection, farming, gas separation, medicine, and pharmacy, are known, making zeolites almost a necessity for daily life. Consequently, there are many research activities dealing with zeolite properties and characterization.

Zeolite-Type Crystal Structures and their Chemistry., Framework Type Codes DAC to LOV

Zeolite-Type Crystal Structures and their Chemistry., Framework Type Codes DAC to LOV
Author : W.H. Baur,R.X. Fischer
Publisher : Springer
Release Date : 2002-10-15
Category : Science
Total pages :459
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Zeolites and zeolite-like materials became important because of their ion exchange capacities and their outstanding catalytic properties. Millions of tons of zeolites have been produced in the past years for the oil refining industry alone and, in even greater quantities, as ion-exchanging softening agents for detergents. Numerous other applications, e.g., in environmental protection, farming, gas separation, medicine, and pharmacy, are known, making zeolites almost a necessity for daily life. Consequently, there are many research activities dealing with zeolite properties and characterization. However, a strictly systematic description of zeolite-type crystal structures was not available but is now presented in this series of volumes. It is designed as a reference work for zeolite chemists and materials scientists, but it also serves as a tool to interpret structural similarities and to derive new structures from known topologies.

Handbook of Zeolites

Handbook of Zeolites
Author : T. W. Wong
Publisher : Materials Science and Technolo
Release Date : 2009
Category : Science
Total pages :676
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Zeolites are microporous crystalline solids with well-defined structures. Generally they contain silicon, aluminium and oxygen in their framework and cations, water and/or other molecules within their pores. Many occur naturally as minerals, and are extensively mined in many parts of the world. Others are synthetic, and are made commercially for specific uses, or produced by research scientists trying to understand more about their chemistry. Because of their unique porous properties, zeolites are used in a variety of applications with a global market of several million tonnes per annum. In the western world, major uses are in petrochemical cracking, ion-exchange (water softening and purification), and in the separation and removal of gases and solvents. Other applications are in agriculture, animal husbandry and construction. They are often also referred to as molecular sieves. This book presents leading research from around the world.