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Author: Christina Knöfel
Publisher:
ISBN:
Category :
Languages : fr
Pages : 212
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Book Description
Dans ce travail, des oxydes mesoporeux, tels que silice, oxyde de titane et oxyde de zircone ont été synthétisés en utilisant un copolymère à triblock comme agent structurant. De plus, la silice et l’oxyde de titane ont été fonctionnalisés avec différentes molécules d'aminosilane. La caractérisation des matériaux préparés a été effectuée par diverses méthodes, telles que la sorption d'azote, la spectroscopie infrarouge (ATR) et la diffraction des rayons X. Les matériaux ont été examinés pour leurs propriétés d'adsorption du dioxyde de carbone utilisant principalement la microcalorimétrie. Dans certains cas, des mesures de spectroscopie IR in-situ et des calculs théoriques de DFT ont été effectués pour mieux comprendre les résultats obtenus par microcalorimétrie d’adsorption. En ce qui concerne les différentes propriétés d'adsorption nous avons mis en évidence que la functionalisation des emplacements d'amine sur les matériaux de silice a amélioré de manière significative les capacités d'adsorption. Une comparaison des différents oxydes a confirmé que les propriétés d'adsorption dépendent principalement de la force du lien du métal-oxygène dans les oxydes mais également des caractéristiques de texture, telles que la porosité.
Author: Christina Knöfel
Publisher:
ISBN:
Category :
Languages : fr
Pages : 212
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Book Description
Dans ce travail, des oxydes mesoporeux, tels que silice, oxyde de titane et oxyde de zircone ont été synthétisés en utilisant un copolymère à triblock comme agent structurant. De plus, la silice et l’oxyde de titane ont été fonctionnalisés avec différentes molécules d'aminosilane. La caractérisation des matériaux préparés a été effectuée par diverses méthodes, telles que la sorption d'azote, la spectroscopie infrarouge (ATR) et la diffraction des rayons X. Les matériaux ont été examinés pour leurs propriétés d'adsorption du dioxyde de carbone utilisant principalement la microcalorimétrie. Dans certains cas, des mesures de spectroscopie IR in-situ et des calculs théoriques de DFT ont été effectués pour mieux comprendre les résultats obtenus par microcalorimétrie d’adsorption. En ce qui concerne les différentes propriétés d'adsorption nous avons mis en évidence que la functionalisation des emplacements d'amine sur les matériaux de silice a amélioré de manière significative les capacités d'adsorption. Une comparaison des différents oxydes a confirmé que les propriétés d'adsorption dépendent principalement de la force du lien du métal-oxygène dans les oxydes mais également des caractéristiques de texture, telles que la porosité.
Author: An-Hui Lu
Publisher: Springer Science & Business
ISBN: 3642546463
Category : Technology & Engineering
Languages : en
Pages : 253
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Book Description
This multi-authored book provides a comprehensive overview of the latest developments in porous CO2 capture materials, including ionic liquid–derived carbonaceous adsorbents, porous carbons, metal-organic frameworks, porous aromatic frameworks, micro porous organic polymers. It also reviews the sorption techniques such as cyclic uptake and desorption reactions and membrane separations. In each category, the design and fabrication, the comprehensive characterization, the evaluation of CO2 sorption/separation and the sorption/degradation mechanism are highlighted. In addition, the advantages and remaining challenges as well as future perspectives for each porous material are covered. This book is aimed at scientists and graduate students in such fields as separation, carbon, polymer, chemistry, material science and technology, who will use and appreciate this information source in their research. Other specialists may consult specific chapters to find the latest, authoritative reviews. Dr. An-Hui Lu is a Professor at the State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Faculty of Chemical, Environmental and Biological Science and Technology, Dalian University of Technology, China. Dr. Sheng Dai is a Corporate Fellow and Group Leader in the Chemical Sciences Division at Oak Ridge National Laboratory (ORNL) and a Professor of Chemistry at the University of Tennessee, USA.
Author:
Publisher: Elsevier
ISBN: 0080528910
Category : Technology & Engineering
Languages : en
Pages : 809
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Book Description
This book contains 99 of the papers that were presented at the 6th in the series of Symposia on Characterization of Porous Solids held in Alicante, Spain, May 2002. Written by leading international specialists in the subject, the contributions represent an up-to-date and authoritative account of recent developments around the world in the major methods used to characterize porous solids. The book is a useful work of reference for anyone interested in characterizing porous solids, such as MCM-41 mesoporous materials, pillared clays, etc. Papers on pore structure determination using gas adsorption feature strongly, together with papers on small angle scattering methods, mercury porosimetry, microcalorimetry, scanning probe microscopies, and image analysis.
Author: Julian Patrick Sculley
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Two of the hottest areas in porous materials research in the last decade have been in energy storage, mainly hydrogen and methane, and in carbon capture and sequestration (CCS). Although these topics are intricately linked in terms of our future energy landscape, the specific materials needed to solve these problems must have significantly different properties. High pressure gas storage is most often linked with high surface areas and pore volumes, while carbon capture sorbents require high sorption enthalpies to achieve the needed selectivity. The latter typically involves separating CO2 from mixed gas streams of mostly nitrogen via a temperature swing adsorption (TSA) process. Much of the excitement has arisen because of the potential of metal-organic frameworks (MOFs) and porous polymer networks (PPNs). Both classes of materials have extremely high surface areas (upwards of 4000 m2/g) and can be modified to have specific physical properties, thus enabling high performance materials for targeted applications. This dissertation focuses on the synthesis and characterization of these novel materials for both applications by tuning framework topologies, composition, and surface properties. Specifically, two routes to synthesize a single molecule trap (SMT) highlight the flexibility of MOF design and ability to tune a framework to interact with specifically one guest molecule; computational and experimental evidence of the binding mechanism are shown as well. Furthermore, eight PPNs are synthesized and characterized for post-combustion carbon capture and direct air capture applications. In addition a high-throughput model, grounded in thermodynamics, to calculate the energy penalty associated with the carbon capture step is presented in order to evaluate all materials for TSA applications provide a comparison to the state of the art capture technologies. This includes results of working capacity and energy calculations to determine parasitic loads (per ton of CO2 captured) from readily available experimental data of any material (adsorption isotherms and heat capacities) using a few simple equations. Through various systematic investigations, trends are analyzed to form structure property relationships that will aid future material development. The electronic version of this dissertation is accessible from http://hdl.handle.net/1969.1/149368
Author: John W. Patrick
Publisher: John Wiley & Sons
ISBN:
Category : Science
Languages : en
Pages : 352
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Book Description
Porosity in carbons often means different things to different people depending largely on the different applications of the various carbon materials. On the one hand, users involved in gas purification or respiratory protection are concerned primarily with microporosity, and at the other extreme, the user of carbon in the form of metallurgical coke is concerned with macroporosity because of its influence on the mechanical properties of the coke. Between these extremes there is a range of applications which rely on different aspects of the nature of the porous structure and the characterization required reflects the particular application in mind. This characterization of a wide diversity of porous structures presents some problems. However recent developments have produced some solutions, for example computerized image analysis has facilitated the measurement of pore shape and size. The eleven chapters in this book present an analysis of the current methods of characterization and the role of various aspects of carbon porosity in some representative and diverse applications.
Author: Robin J White
Publisher: Royal Society of Chemistry
ISBN: 1782624430
Category : Science
Languages : en
Pages : 453
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Book Description
Porous carbon materials are at the heart of many applications, including renewable energy storage and generation, due to their superior physical properties and availability. The environmentally-friendly production of these materials is crucial for a sustainable future. This book focuses on the transformation of sustainable precursors into functional, porous carbonaceous materials via the two most significant approaches: Starbon® and Hydrothermal Carbonisation. Covering cutting-edge research and emerging areas, chapters cover applications of porous carbon materials in catalysis and separation science as well as in energy science. Moreover, the challenges of characterization of these materials and their commercialization are explained by worldwide experts. The content will be accessible and valuable to post-graduate students and senior researchers alike and it will serve as a significant reference for academics and industrialists working in the areas of materials science, catalysis and separation science.
Author: M. Jaroniec
Publisher: Elsevier
ISBN: 0080537227
Category : Technology & Engineering
Languages : en
Pages : 711
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Book Description
Nanoporous Materials III contains the invited lectures and peer-reviewed oral and poster contributions to be presented at the 3rd Conference on Nanoporous Materials, which will be hosted in Ottawa, Canada, June 2002. The work covers complementary approaches to and recent advances in the field of nanostructured materials with pore sizes larger than 1nm, such as periodic mesoporous molecular sieves M41S and FSM16 and related materials including clays, carbon molecular sieves, colloidal crystal templated organic and inorganic materials, porous polymers and sol gels. The broad range of topics covered in relation to the synthesis and characterization of ordered mesoporous materials are of great importance for advanced adsorption, catalytic and separation processes as well as the development of nanotechnology. The contents of this title are based on topics to be discussed by invited lecturers, which deal with periodic mesoporous organosilicas, stability and catalytic activity of aluminosilicate mesostructures, electron microscopy studies of ordered materials, imprinted polymers and highly porous metal-organic frameworks. The other contributions deal with tailoring the surface and structural properties of nanoporous materials, giving a detailed characterization as well as demonstrating their usefulness for advanced adsorption and catalytic applications.
Author: De-en Jiang
Publisher: John Wiley & Sons
ISBN: 1119091179
Category : Science
Languages : en
Pages : 397
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Book Description
Covers a wide range of advanced materials and technologies for CO2 capture As a frontier research area, carbon capture has been a major driving force behind many materials technologies. This book highlights the current state-of-the-art in materials for carbon capture, providing a comprehensive understanding of separations ranging from solid sorbents to liquid sorbents and membranes. Filled with diverse and unconventional topics throughout, it seeks to inspire students, as well as experts, to go beyond the novel materials highlighted and develop new materials with enhanced separations properties. Edited by leading authorities in the field, Materials for Carbon Capture offers in-depth chapters covering: CO2 Capture and Separation of Metal-Organic Frameworks; Porous Carbon Materials: Designed Synthesis and CO2 Capture; Porous Aromatic Frameworks for Carbon Dioxide Capture; and Virtual Screening of Materials for Carbon Capture. Other chapters look at Ultrathin Membranes for Gas Separation; Polymeric Membranes; Carbon Membranes for CO2 Separation; and Composite Materials for Carbon Captures. The book finishes with sections on Poly(amidoamine) Dendrimers for Carbon Capture and Ionic Liquids for Chemisorption of CO2 and Ionic Liquid-Based Membranes. A comprehensive overview and survey of the present status of materials and technologies for carbon capture Covers materials synthesis, gas separations, membrane fabrication, and CO2 removal to highlight recent progress in the materials and chemistry aspects of carbon capture Allows the reader to better understand the challenges and opportunities in carbon capture Edited by leading experts working on materials and membranes for carbon separation and capture Materials for Carbon Capture is an excellent book for advanced students of chemistry, materials science, chemical and energy engineering, and early career scientists who are interested in carbon capture. It will also be of great benefit to researchers in academia, national labs, research institutes, and industry working in the field of gas separations and carbon capture.
Author: Bin Mu
Publisher:
ISBN:
Category : Adsorption
Languages : en
Pages :
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Book Description
Metal-organic frameworks (MOFs) or porous coordination polymers (PCPs) have become the focus of intense study over the past decade due to their potential for advancing a variety of applications including air purification, gas storage, adsorption separations, catalysis, gas sensing, drug delivery, and so on. These materials have some distinct advantages over traditional porous materials such as the well-defined structures, uniform pore sizes, chemically functionalized sorption sites, and potential for post-synthetic modification, etc. Thus, synthesis and adsorption studies of porous MOFs have increased substantially in recent years. Among various prospective applications, air purification is one of the most immediate concerns, which has urgent requirements to improve current nuclear, biological, and chemical (NBC) filters involving commercial and military purposes. Thus, the major goal of this funded project is to search, synthesize, and test these novel hybrid porous materials for adsorptive removal of toxic industrial chemicals (TICs) and chemical warfare agents (CWAs), and to install the benchmark for new-generation NBC filters. The objective of this study is three-fold: (i) Advance our understanding of coordination chemistry by synthesizing novel MOFs and characterizing these porous coordination polymers; (ii) Evaluate porous MOF materials for gas-adsorption applications including CO2 capture, CH4 storage, other light gas adsorption and separations, and examine the chemical and physical properties of these solid adsorbents including thermal stability and heat capacity of MOFs; (iii) Evaluate porous MOF materials for next-generation NBC filter media by adsorption breakthrough measurements of TICs on MOFs, and advance our understanding about structure-property relationships of these novel adsorbents.
Author:
Publisher: World Scientific
ISBN: 9811223246
Category : Science
Languages : en
Pages : 1495
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Book Description
This four-volume handbook gives a state-of-the-art overview of porous materials, from synthesis and characterization and simulation all the way to manufacturing and industrial applications. The editors, coming from academia and industry, are known for their didactic skills as well as their technical expertise. Coordinating the efforts of 37 expert authors in 14 chapters, they construct the story of porous carbons, ceramics, zeolites and polymers from varied viewpoints: surface and colloidal science, materials science, chemical engineering, and energy engineering. Volumes 1 and 2 cover the fundamentals of preparation, characterisation, and simulation of porous materials. Working from the fundamentals all the way to the practicalities of industrial production processes, the subjects include hierarchical materials, in situ and operando characterisation using NMR, X-Ray scattering and tomography, state-of-the-art molecular simulations of adsorption and diffusion in crystalline nanoporous materials, as well as the emerging areas of bio-artificing and drug delivery. Volume 3 focuses on porous materials in industrial separation applications, including adsorption separation, membrane separation, and osmotic distillation. Finally, and highly relevant to tomorrow's energy challenges, Volume 4 explains the energy engineering aspects of applying porous materials in supercapacitors, fuel cells, batteries, electrolysers and sub-surface energy applications.The text contains many high-quality colourful illustrations and examples, as well as thousands of up-to-date references to peer-reviewed articles, reports and websites for further reading. This comprehensive and well-written handbook is a must-have reference for universities, research groups and companies working with porous materials.Related Link(s)
