Download or read book In situ resonance raman studies of molybdenum oxide based selective oxidation catalysts written by Martin Dieterle and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Situ Resonance Raman Studies of Molybdenum Oxide Based Selective Oxidation Catalysts written by and published by . This book was released on 2001 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Raman Spectroscopic Studies of Iron molybdenum Oxide Catalysts for the Oxidation of Methanol to Formaldehyde written by James Harvey Wilson and published by . This book was released on 1986 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nd YAG Laser written by Dan C. Dumitras and published by BoD – Books on Demand. This book was released on 2012-03-09 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discovered almost fifty years ago at Bell Labs (1964), the Nd:YAG laser has undergone an enormous evolution in the years, being now widely used in both basic research and technological applications. Nd:YAG Laser covers a wide range of topics, from new systems (diode pumping, short pulse generation) and components (a new semiorganic nonlinear crystal) to applications in material processing (coating, welding, polishing, drilling, processing of metallic thin films), medicine (treatment, drug administration) and other various fields (semiconductor nanotechnology, plasma spectroscopy, laser induced breakdown spectroscopy).
Download or read book Raman Spectroscopic Studies of Iron molybdenum Oxide Catalysts for the Oxidation of Methanol to Formaldehyde written by James Harvey Wilson (III) and published by . This book was released on 1986 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thermokinetic Structure activity Investigation of the Phase Transformations of Molybdenum Oxide Based Selective Oxidation Catalysts written by Qureshiah Begum Abdul Basher and published by . This book was released on 2005 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structure Activity Correlations and Solid state Kinetic Investigations of Iron Oxide based Catalysts Supported on SBA 15 written by Nina Sharmen Genz and published by . This book was released on 2019-10-16 with total page 257 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, iron oxidic species supported on nanostructured silica (SBA-15) are introduced as model catalysts for deducing structure-activity correlations in selective oxidation of propene. Influence of iron loading, Fe(III) precursor, powder layer thickness during calcination, and molybdenum addition on structure and activity of Fe_{xO_{y/SBA-15 catalysts is investigated.Fe_{xO_{y/SBA-15 catalysts are characterized ex situ and in situ by a multitude of analyzing methods, i.e. XRD, DR-UV-Vis spectroscopy, N_{2physisorption, Raman and Mössbauer spectroscopy, GC-MS, X-ray absorption spectroscopy, and TPR. Moreover, applicability of solid-state kinetic analysis methods to supported iron oxidic species is shown. Results from solid-state kinetic analysis under non-isothermal conditions are particularly helpful in corroborating structure-activity correlations of Fe_{xO_{y/SBA-15 catalysts. Understanding the correlation of various synthesis parameters with structure and activity of Fe_{xO_{y/SBA-15 catalysts eventually permits obtaining improved green iron oxide catalysts for selective oxidation of propene.
Download or read book Laser Raman Spectroscopic Characterization of Mixed Tin antimony Oxide Catalysts and Supported Molybdenum Oxide Catalysts written by Sharon Rae Stampfl and published by . This book was released on 1986 with total page 438 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Springer Handbook of Advanced Catalyst Characterization written by Israel E. Wachs and published by Springer Nature. This book was released on 2023-06-12 with total page 1109 pages. Available in PDF, EPUB and Kindle. Book excerpt: Co-edited by world-renowned scientists in the field of catalysis, this book contains the cutting-edge in situ and operando spectroscopy characterization techniques operating under reaction conditions to determine a materials’ bulk, surface, and solution complex and their applications in the field of catalysis with emphasis on solid catalysts in powder form since such catalyst are relevant for industrial applications. The handbook covers from widely-used to cutting-edge techniques. The handbook is written for a broad audience of students and professionals who want to pursue the full capabilities available by the current state-of-the-art in characterization to fully understand how their catalysts really operate and guide the rational design of advanced catalysts. Individuals involved in catalysis research will be interested in this handbook because it contains a catalogue of cutting-edge methods employed in characterization of catalysts. These techniques find wide use in applications such as petroleum refining, chemical manufacture, natural gas conversion, pollution control, transportation, power generation, pharmaceuticals and food processing. fdsfds
Download or read book Oxygen Chemisorption and Selective Oxidation of Propylene on Molybdenum Oxide Catalysts written by Anantha Narayanan Desikan and published by . This book was released on 1993 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Raman Spectroscopy For Catalysis written by John Stencel and published by Springer. This book was released on 1989-11-30 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book In Situ Vibrational Spectroscopic Investigation of C4 Hydrocarbon Selective Oxidation Over Vanadium phosphorus oxide Catalysts written by Zhi-Yang Xue and published by . This book was released on 1999 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The open chain dicarbonyl species then experienced cycloaddition to form maleic anhydride. VPO catalyst phase transformations were investigated using in situ laser Raman spectroscopy. During reduction-oxidation step changes, (VO)2P20-- was readily converted to [Alpha subscript Pi]-, [Delta]-VOP04 and ultimately to [Beta]-VOP04 in O2/N2; these V5 phases were eliminated in n- butane/N2. A "wet" nitrogen feed (5-10% H20 in N2) transformed (VO)2P20-- and [Alpha subscript Iota]-, [Alpha subscript Pi]-, [Beta]-, [Delta]-, [Gamma]-VOP04 to V2O5 at temperatures above 400°C. The presence of water vapor facilitated the loss of oxygen atoms involved in V-O-P bonding; separated vanadium oxide and phosphorus oxide species were formed. The isolated vanadium oxides than transformed to V2O5, and phosphorus species likely diffused from the catalyst lattice in the form of acid phosphates.
Download or read book Pathway and Surface Mechanism Studies of 1 3 butadiene Selective Oxidation Over Vanadium molybdenum oxygen Catalysts written by William David Schroeder and published by . This book was released on 2001 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: The catalytic effects of water addition were related to competitive adsorption with various V2O5-based surface sites, including the vanadyl V=O, corner sharing V-0-V and edge sharing V-0 oxygen. Higher levels of water addition were proposed to impose acidic character by dissociative adsorption. In addition, a novel combinatorial synthesis technique for VMoO was used to investigate the phase transitions Of V205, solid solutions of Mo in V205, V9Mo6040, and other reduced VMoO compounds, characterized by laser Raman spectroscopy. The natural composition gradient imposed by the sputter deposition apparatus was used to create VMoO arrays containing 225 samples ranging from 7.0 - 42 mol % Mo03/(V205 + Mo03), determined by EDS analysis.
Download or read book Pathway and Surface Mechanism Studies of 1 3 butadiene Selective Oxidation Over Vanadium Molybdenum Oxygen Catalysts written by and published by . This book was released on 2002 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The partial oxidation of 1,3-butadiene has been investigated over VMoO catalysts synthesized by sol-gel techniques. Surface areas were 9-14 m2/g, and compositions were within the solid solution regime, i.e. below 15.0 mol % MoO3/(MoO3 + V2O5). Laser Raman Spectroscopy and XRD data indicated that solid solutions were formed, and pre- and post-reaction XPS data indicated that catalyst surfaces contained some V{sup +4} and were further reduced in 1,3-butadiene oxidation. A reaction pathway for 1,3-butadiene partial oxidation to maleic anhydride was shown to involve intermediates such as 3,4-epoxy-1-butene, crotonaldehyde, furan, and 2-butene-1,4-dial. The addition of water to the reaction stream substantially increased catalyst activity and improved selectivity to crotonaldehyde and furan at specific reaction temperatures. At higher water addition concentrations, furan selectivity increased from 12% to over 25%. The catalytic effects of water addition were related to competitive adsorption with various V2O5-based surface sites, including the vanadyl V=O, corner sharing V-O-V and edge sharing V-O oxygen. Higher levels of water addition were proposed to impose acidic character by dissociative adsorption. In addition, a novel combinatorial synthesis technique for VMoO was used to investigate the phase transitions of V2O5, solid solutions of Mo in V2O5, V9Mo6O40, and other reduced VMoO compounds, characterized by laser Raman spectroscopy. The natural composition gradient imposed by the sputter deposition apparatus was used to create VMoO arrays containing 225 samples ranging from 7.0-42 mol% MoO3/(V2O5 + MoO3), determined by EDS analysis.
Download or read book Oxygen in Catalysis written by Adam Bielanski and published by CRC Press. This book was released on 1990-11-29 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt: A description of catalytic systems commonly used as model systems in the laboratory and as industrial catalysts in large-scale operations, and a discussion of the mechanisms operating in these reactions. Attempts to describe the elementary steps by quantum chemical methods are also shown, as are rec
Download or read book The Optimization of a Raman Spectrometer and Characterization of Ruthenium Intrazeolitic Oxidation Catalysts by Resonance Raman Spectroscopy written by Kevin J. Temple and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Niobium Oxide Based Catalysts for the Selective Oxidation of Hydrocarbons written by Preabjot Kaur Singh and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
