Mechanistic Studies Of Transformations Over Zeolite Catalysts Probed By Novel Solid State Nmr Methods PDF Download
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Author | : Patrick William Goguen |
Publisher | : |
Total Pages | : 412 |
Release | : 1997 |
Genre | : |
ISBN | : |
Download Mechanistic Studies of Transformations Over Zeolite Catalysts Probed by Novel Solid State NMR Methods Book in PDF, ePub and Kindle
Author | : Yijiao Jiang |
Publisher | : |
Total Pages | : 119 |
Release | : 2007 |
Genre | : |
ISBN | : 9783832517281 |
Download Mechanistic Studies of the Methanol-to-olefin Process on Acidic Zeolite Catalysts by in Situ Solid State NMR-UV, Vis Spectroscopy Book in PDF, ePub and Kindle
Author | : Jun Huang |
Publisher | : |
Total Pages | : 116 |
Release | : 2008 |
Genre | : |
ISBN | : 9783832519704 |
Download Mechanistic Studies of the Ethylbenzene Disproportionation onAcidic Zeolite Catalysts by in Situ Solid-state NMR Spectroscopy Book in PDF, ePub and Kindle
Author | : Eric Jon Munson |
Publisher | : |
Total Pages | : 404 |
Release | : 1993 |
Genre | : Nuclear magnetic resonance |
ISBN | : |
Download In Situ Solid-state Nuclear Magnetic Resonance Studies of Reactions in Zeolite Catalysts Book in PDF, ePub and Kindle
Author | : |
Publisher | : |
Total Pages | : 848 |
Release | : 2006 |
Genre | : Dissertations, Academic |
ISBN | : |
Download Dissertation Abstracts International Book in PDF, ePub and Kindle
Author | : A. Philippou |
Publisher | : |
Total Pages | : |
Release | : 1995 |
Genre | : |
ISBN | : |
Download Solid State NMR Studies of Zeolite Catalysis and Investigation of Novel Microporous Titanosilicates Book in PDF, ePub and Kindle
Author | : Venkata Ramana Reddy Marthala |
Publisher | : |
Total Pages | : 125 |
Release | : 2009 |
Genre | : |
ISBN | : |
Download Mechanistic Studies of the Vapor-phase Beckmann Rearrangement on Solid Catalysts by in Situ Solid-state NMR Spectroscopy Book in PDF, ePub and Kindle
Author | : Jens Weitkamp |
Publisher | : Springer Science & Business Media |
Total Pages | : 582 |
Release | : 2013-04-17 |
Genre | : Science |
ISBN | : 3662037645 |
Download Catalysis and Zeolites Book in PDF, ePub and Kindle
Zeolites occur in nature and have been known for almost 250 years as alumino silicate minerals. Examples are clinoptilolite, mordenite, offretite, ferrierite, erionite and chabazite. Today, most of these and many other zeolites are of great interest in heterogeneous catalysis, yet their naturally occurring forms are of limited value as catalysts because nature has not optimized their properties for catalytic applications and the naturally occurring zeolites almost always contain undesired impurity phases. It was only with the advent of synthetic zeolites in the period from about 1948 to 1959 (thanks to the pioneering work of R. M. Barrer and R. M. Milton) that this class of porous materials began to playa role in catalysis. A landmark event was the introduction of synthetic faujasites (zeolite X at first, zeolite Y slightly later) as catalysts in fluid catalytic cracking (FCC) of heavy petroleum distillates in 1962, one of the most important chemical processes with a worldwide capacity of the order of 500 million t/a. Compared to the previously used amorphous silica-alumina catalysts, the zeolites were not only orders of magnitude more active, which enabled drastic process engineering improvements to be made, but they also brought about a significant increase in the yield of the target product, viz. motor gasoline. With the huge FCC capacity worldwide, the added value of this yield enhancement is of the order of 10 billion US $ per year.
Author | : Suyash Singh |
Publisher | : |
Total Pages | : 178 |
Release | : 2014 |
Genre | : |
ISBN | : |
Download Mechanistic Studies for Catalytic Transformation of Small Oxygenates on Transition Metals Book in PDF, ePub and Kindle
Over the past century, heterogeneous catalysis has played a central role in the development of efficient chemical processes for the conversion of fossil resources to fuels and chemicals, and identification of new, sustainable routes to upgrade renewable carbon sources that minimize the ecological footprint. More recently, unprecedented advances in electronic structure theory and related computational methods have provided a major thrust to the efforts that utilize density function theory (DFT) calculations for developing fundamental atomic-level understanding of these processes, and subsequently designing new and improved catalysts. In this dissertation, a combined theoretical and experimental approach is presented to study the reaction mechanisms for the catalytic conversion of formic acid (FA) and propylene oxide on transition metals. An iterative methodology comprising of DFT calculations, reaction kinetics measurements, and mean-field microkinetic modeling is employed to determine the nature of active sites on supported catalysts, explain the experimentally observed trends, and obtain predictions for the surface environment under reaction conditions. A detailed analysis of the DFT derived thermochemistry and kinetics parameters over a wide range of transition metal surfaces is performed to identify the key reactivity descriptors for FA decomposition on transition metal catalysts, and develop semi-empirical linear correlations that are then used to develop a microkinetic modeling based framework for the identification and design of improved (active and selective) bimetallic alloy catalysts. Finally, the possible utilization and applications of these methods and ideas in other key chemical transformations are proposed, and suggestions for future work are included.
Author | : Oliver Kröcher |
Publisher | : MDPI |
Total Pages | : 281 |
Release | : 2018-12-14 |
Genre | : Electronic books |
ISBN | : 3038973645 |
Download Selective Catalytic Reduction of NOx Book in PDF, ePub and Kindle
This book is a printed edition of the Special Issue "Selective Catalytic Reduction of NOx" that was published in Catalysts