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Encapsulated Catalysts

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Encapsulated Catalysts

Encapsulated Catalysts Book
Author : Samahe Sadjadi
Publisher : Academic Press
Release : 2017-06-08
ISBN : 0128039051
Language : En, Es, Fr & De

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Book Description :

Encapsulated Catalysts provides valuable information for chemists, chemical engineers, and materials scientists in this promising area. The book describes many kinds of encapsulated catalysts and their applications in chemistry, including organic, inorganic, hybrid, and biological systems. Unlike other works, which discuss traditional supports, this useful resource uniquely focuses on extremely important topics, such as the encapsulation effects on reactivity and selectivity, the difficulty of their separation from reaction mixture, and/or their sensitivity to reaction conditions, and the limit of their industrial applications. In addition, the book covers the immobilization of homogenous catalysts on inorganic or organic supports and how it enables the separation of homogenous catalysts, as well as the protection or reuse of catalysts. Discusses one of the most promising advances in catalysis and recent developments in the area, including enzyme mimic catalysts and new nano-materials for catalyst encapsulation Provides interdisciplinary coverage of organic, inorganic, and biological materials for encapsulation of catalysts Describes various types of reactions which can be catalyzed in presence of encapsulated catalysts

Microencapsulation

Microencapsulation Book
Author : Harvard University. Graduate School of Business Administration
Publisher : Unknown
Release : 1963
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Microencapsulation book written by Harvard University. Graduate School of Business Administration, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Encapsulated Catalysts

Encapsulated Catalysts Book
Author : Dejan Štefanec,Aljoša Vrhunec,Jurij Pušlar,Hugh Gibbs (kemik.),Franjo Gol (kemik.)
Publisher : Unknown
Release : 2013
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Encapsulated Catalysts book written by Dejan Štefanec,Aljoša Vrhunec,Jurij Pušlar,Hugh Gibbs (kemik.),Franjo Gol (kemik.), available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Catalyst Manufacture Recovery and Use 1972

Catalyst Manufacture  Recovery  and Use  1972 Book
Author : Marshall Sittig
Publisher : William Andrew
Release : 1972
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Catalyst Manufacture Recovery and Use 1972 book written by Marshall Sittig, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Investigation of Metal Nanoparticles Encapsulated in Polyelectrolyte Multilayers for Catalytic and Antibacterial Applications

Investigation of Metal Nanoparticles Encapsulated in Polyelectrolyte Multilayers for Catalytic and Antibacterial Applications Book
Author : Srividhya Kidambi
Publisher : Unknown
Release : 2007
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Investigation of Metal Nanoparticles Encapsulated in Polyelectrolyte Multilayers for Catalytic and Antibacterial Applications book written by Srividhya Kidambi, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Development of a Zeolite Encapsulated Catalyst for Oxidation of Alkenes

Development of a Zeolite Encapsulated Catalyst for Oxidation of Alkenes Book
Author : Charun Yafa
Publisher : Unknown
Release : 1998
ISBN : 9789743314575
Language : En, Es, Fr & De

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Book Description :

Download Development of a Zeolite Encapsulated Catalyst for Oxidation of Alkenes book written by Charun Yafa, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Catalysis by Microporous Materials

Catalysis by Microporous Materials Book
Author : H.K. Beyer,J.B. Nagy,H.G. Karge,I. Kiricsi
Publisher : Elsevier
Release : 1995-05-19
ISBN : 9780080544670
Language : En, Es, Fr & De

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Book Description :

ZEOCAT '95 is the eleventh in the series of symposia devoted to special fields of zeolite chemistry. Six plenary lectures, forty oral and forty-two poster presentations were included in the program. The accepted papers cover every aspect of catalysis on microporous materials. A significant number of the contributions describe the synthesis, modification, instrumental and chemical characterisation of zeolites and other micro- and mesoporous materials. Catalytic reactions involve hydrocarbon cracking, nucleophilic aromatic substitution, methanol to hydrocarbon conversion, hydration of acetylene, various alkylation reactions, redox transformations, Claisen rearrangement, etc.

New and Future Developments in Catalysis

New and Future Developments in Catalysis Book
Author : Frédéric Lefebvre
Publisher : Elsevier Inc. Chapters
Release : 2013-07-18
ISBN : 0128081805
Language : En, Es, Fr & De

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Book Description :

Download New and Future Developments in Catalysis book written by Frédéric Lefebvre, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Indian Journal of Chemistry

Indian Journal of Chemistry Book
Author : Anonim
Publisher : Unknown
Release : 1999
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Indian Journal of Chemistry book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Nanomaterials in Catalysis

Nanomaterials in Catalysis Book
Author : Philippe Serp,Karine Philippot
Publisher : John Wiley & Sons
Release : 2012-11-15
ISBN : 3527656898
Language : En, Es, Fr & De

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Book Description :

Nanocatalysis has emerged as a field at the interface between homogeneous and heterogeneous catalysis and offers unique solutions to the demanding requirements for catalyst improvement. Heterogeneous catalysis represents one of the oldest commercial applications of nanoscience and nanoparticles of metals, semiconductors, oxides, and other compounds have been widely used for important chemical reactions. The main focus of this fi eld is the development of well-defined catalysts, which may include both metal nanoparticles and a nanomaterial as the support. These nanocatalysts should display the benefits of both homogenous and heterogeneous catalysts, such as high efficiency and selectivity, stability and easy recovery/recycling. The concept of nanocatalysis is outlined in this book and, in particular, it provides a comprehensive overview of the science of colloidal nanoparticles. A broad range of topics, from the fundamentals to applications in catalysis, are covered, without excluding micelles, nanoparticles in ionic liquids, dendrimers, nanotubes, and nanooxides, as well as modeling, and the characterization of nanocatalysts, making it an indispensable reference for both researchers at universities and professionals in industry.

Improved Catalysts for Heavy Oil Upgrading Based on Zeolite Y Nanoparticles Encapsulated Stable Nanoporous Host

Improved Catalysts for Heavy Oil Upgrading Based on Zeolite Y Nanoparticles Encapsulated Stable Nanoporous Host Book
Author : Anonim
Publisher : Unknown
Release : 2007
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

The addition of hydrothermally-aged zeolite Y precursor to an SBA-15 synthesis mixture under a mildly acidic condition resulted in the formation of a mesoporous aluminosilicate catalyst, AlSBA-15. The Al-SBA-15 mesoporous catalyst contains strong Br{umlt o}nsted acid sites and aluminum (Al) stabilized in a totally tetrahedral coordination. The physicochemical characteristics of the catalyst varied as a function of the synthesis conditions. The catalyst possessed surface areas ranging between 690 and 850 m2/g, pore sizes ranging from 5.6 to 7.5 nm, and pore volumes up 1.03 cm3, which were comparable to the parent SBA-15 synthesized under similar conditions. Two wt % Al was present in the catalyst that was obtained from the reaction mixture that contained the highest Al content. The Al remained stable in totally tetrahedral coordination after calcination at a temperature of 550 C. The Al-SBA-15 mesoporous catalyst showed significant catalytic activity for cumene dealkylation, and the activity increased as the amount of zeolite precursor added to the SBA-15 mixture was increased. In preparation for the final phase of the project, the catalyst was embedded into a psuedoboemite alumina (catapal B) matrix and then formed into pellets. In the final phase of the project, the pelletized catalyst is being evaluated for the conversion of a heavy petroleum feedstock to naphtha and middle distillates. This phase was significantly delayed during the past six months due to a serious malfunction of the fume hoods in the Clark Atlanta University's Research Center for Science and Technology, where the project is being conducted. The fume hood system was repaired and the catalyst evaluation is now underway.

Advances in Catalysis

Advances in Catalysis Book
Author : Chunshan Song
Publisher : Academic Press
Release : 2018-11-26
ISBN : 0128155132
Language : En, Es, Fr & De

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Book Description :

Advances in Catalysis, Volume 63 fills the gap between journal papers and textbooks across the diverse areas of catalysis research. For more than 60 years, this series has dedicated itself to record and present the latest progress in the field of catalysis, providing the scientific community with comprehensive and authoritative reviews. This series is an invaluable and comprehensive resource for chemical engineers and chemists working in the field of catalysis in both academia and industry. Contains authoritative reviews written by experts in the field Explores topics that reflect progress in the field, such as catalyst synthesis, catalyst characterization, catalytic chemistry, reaction engineering, computational chemistry and physics Provides insightful and critical articles that are fully edited to suit various backgrounds

Dendrimer encapsulated Metal Nanoparticles

Dendrimer encapsulated Metal Nanoparticles Book
Author : Yanhui Niu
Publisher : Unknown
Release : 2004
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

The research in this dissertation examines the chemistry and applications of dendrimers in homogeneous catalysis. We examined interactions between dendrimers and charged probe molecules, prepared dendrimer-encapsulated metal nanoparticles in organic solvents, studied size-selectivity of dendrimer-encapsulted catalysts, and designed molecular rulers as in-situ probes to measure the location of dendrimer-encapsulted metal nanoparticles. The intrinsic proton binding constant and a constant that characterizes the strength of electrostatic interactions among occupied binding sites in poly(amidoamine) (PAMAM) dendrimers have been obtained by studying the effect of solution pH on the protonation of the dendrimers. The significant finding is that these two factors are greatly modulated by the unique and hydrophobic microenvironment in the dendrimer interior. Hydrophilic poly(propylene imine) (PPI) dendrimers were modified with various hydrophobic alkyl chains through an amide linkage and were then used as templates for preparing intradendrimer copper nanoclusters. The main driving force for encapsulating metal-ions was found to be the differences in metal-ion solubility between the solvent and the interior of the dendrimer. Nanometer-sized metal particles are synthesized and encapsulated into the interior of dendrimers by first mixing together the dendrimer and metal ion solution and then reducing the composite chemically, and the resulting dendrimer-encapsulated metal nanoparticles can then be used as catalysts. By controlling the packing density on the dendrimer periphery using either different dendrimer generations or dendrimer surface functionalities, it is possible to control access of substrates to the encapsulated catalytic nanoparticle. Molecular rulers consisting of a large molecular "stopper", a reactive probe and a linker were designed as in-situ probes for determining the average distance between the surface of dendrimer-encapsulated palladium nanoparticles and the periphery of their fourth-generation, hydroxyl-terminated PAMAM dendrimer hosts. By doing so, we avoid having to make assumptions about the nanoparticle size and shape. The results suggest that the surface of the encapsulated nanoparticle is situated 0.7 " 0.2 nm from the surface of the dendrimer.

Core Shell and Yolk Shell Nanocatalysts

Core Shell and Yolk Shell Nanocatalysts Book
Author : Hiromi Yamashita
Publisher : Springer Nature
Release : 2021-07-26
ISBN : 9811604630
Language : En, Es, Fr & De

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Book Description :

Download Core Shell and Yolk Shell Nanocatalysts book written by Hiromi Yamashita, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Heterogenized Homogeneous Catalysts for Fine Chemicals Production

Heterogenized Homogeneous Catalysts for Fine Chemicals Production Book
Author : Pierluigi Barbaro,Francesca Liguori
Publisher : Springer Science & Business Media
Release : 2010-09-02
ISBN : 9789048136964
Language : En, Es, Fr & De

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Book Description :

Table 1 E factors (tonnes of waste generated per tonne of product manufactured [7] Industry segment Annual product tonnage E factor 6 8 Oil refining 10 –10 Approx. 0. 1 4 6 Bulk chemicals 10 –10

Heterogeneous Catalysis in Organic Chemistry

Heterogeneous Catalysis in Organic Chemistry Book
Author : Gerard V. Smith,Ferenc Notheisz
Publisher : Academic Press
Release : 1999-06-30
ISBN : 9780080524801
Language : En, Es, Fr & De

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Book Description :

The features of this book which will be of special interest to academic organic chemists are the introduction (Chapter 1), which presents a short course on the concepts and language of heterogeneous catalysis, covers organic reaction mechanisms of hydrogenation (Chapter 2), hydrogenolysis (Chapter 4), and oxidation (Chapter 6), a presents problems and solutions specific for running heterogeneous catalytic organic reactions in solution. These materials can supplement advanced chemistry courses. Most synthetic organic chemists use a variety of "protecting groups" which they attach to functional groups (reactive groups of atoms) while some reaction is being conducted on another part of the molecule. These protecting groups prevent reactions of the functional groups during other reactions and are removed later by a heterogeneous catalytic method called hydrogenolysis. One unique feature of this book, not found in other books on catalysis, is an exhaustive chapter (Chapter 4) on hydrogenolysis, which is dredged from the recent synthetic literature published by modern organic chemists. Academic organic chemists should find this chapter extremely useful and may wish to adopt the book as a supplement for advanced organic chemistry courses designed for seniors and for graduate students. It will also be useful for professors and their research groups engaged in synthetic organic chemistry. Many academic organic chemists are not aware of recent advances in heterogeneous enantioselective catalysis (Chapter 3) or in selective low temperature, liquid phase heterogeneous catalytic oxidations by hydrogen peroxide (Chapter 6). These specialty topics are timely and may be new to academic organic chemists and can be used to supplement their advanced courses. Several features of this book will also be of special interest to industrial chemists who are unfamiliar with heterogeneous catalysis. Many good organic chemists are hire by industry. They synthesize a new compound using standard organic synthetic techniques but are informed by their supervisor that they must convert some of their synthetic steps into heterogeneous catalytic steps. They may not have been exposed to heterogeneous catalysis and have few places to turn. This book offers them a crash course in heterogeneous catalysis as well as many examples of reactions and conditions with which they can start their search. Those industrial organic chemists already familiar with heterogeneous catalysis will find this book useful as a reference to many examples in the recent literature. They will find recent surface science discoveries correlated with heterogeneous catalysis or organic reactions and mechanistic suggestions designed to stimulate innovative nontraditional thinking about organic reactions on surfaces. Written by organic chemists for organic chemists Introduces heterogeneous catalysis concepts and language Presents a comprehensive compilation of protecting group removal procedures Covers liquid-phase hydrogenations, hydrogenolysis, and oxidations Addresses heterogeneous methods for producing pure enantiomers of chiral products Examines the emerging field of heterogenized homogeneous catalysts Mixes practical applications with mechanistic interpretations

The Evaluation of Dendrimer Encapsulated Ruthenium Nanoparticles Immobilised on Silica as Catalysts in Various Catalytic Reactions and the Effect of Ionic Liquids on the Catalytic Activity

The Evaluation of Dendrimer Encapsulated Ruthenium Nanoparticles  Immobilised on Silica  as Catalysts in Various Catalytic Reactions and the Effect of Ionic Liquids on the Catalytic Activity Book
Author : Nathan Charles Antonels
Publisher : Unknown
Release : 2014
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download The Evaluation of Dendrimer Encapsulated Ruthenium Nanoparticles Immobilised on Silica as Catalysts in Various Catalytic Reactions and the Effect of Ionic Liquids on the Catalytic Activity book written by Nathan Charles Antonels, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Nanotechnology in Catalysis

Nanotechnology in Catalysis Book
Author : Bert Sels,Marcel Van de Voorde
Publisher : John Wiley & Sons
Release : 2017-06-21
ISBN : 3527699813
Language : En, Es, Fr & De

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Book Description :

Reflecting the R&D efforts in the field that have resulted in a plethora of novel applications over the past decade, this handbook gives a comprehensive overview of the tangible benefits of nanotechnology in catalysis. By bridging fundamental research and industrial development, it provides a unique perspective on this scientifically and economically important field. While the first three parts are devoted to preparation and characterization of nanocatalysts, the final three provide in-depth insights into their applications in the fine chemicals industry, the energy industry, and for environmental protection, with expert authors reporting on real-life applications that are on the brink of commercialization. Timely reading for catalytic chemists, materials scientists, chemists in industry, and process engineers.