Download or read book The Oxidative Dehydrogenation of Ethane Over Alkaline Earth Halide promoted Rare Earth Oxide and Perovskite type Halo oxide Catalysts written by Hongxing Dai and published by . This book was released on 2001 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Oxidative Dehydrogenation of Ethane Using Promoted Lithium Doped Magnesium Oxide Catalysts written by Hendrik Maarten Swaan and published by . This book was released on 1992 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Oxidative Dehydrogenation of Ethylbenzene to Styrene Over Rare Earth Oxide promoted Molybdena alumina Catalysts written by Jae Jo Kim and published by . This book was released on 1986 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Oxidative Dehydrogenation of Ethane written by Edrick Morales and published by . This book was released on 1988 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidative Dehydrogenation of Ethane Over Supported Alkali Chloride Catalysts written by Christian Achim Gärtner and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidative Dehydrogenation of Light Alkanes on Metal Oxide Catalysts written by Morris Dee Argyle and published by . This book was released on 2003 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidative Dehydrogenation of Ethane to Ethylene Over Supported Vanadia and Ni Nb M O Mixed Metal Oxide Catalysts written by Ailing Qiao and published by . This book was released on 2015 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidative Dehydrogenation ODH of Ethane to Ethene Over Supported Vanadium Containing Oxide Catalysts written by Asad Ahmad Khan and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidative Dehydrogenation of Ethane to Ethylene Over Supported Vanadia and Ni Nb M O Mided Metal Oxide Catalysts written by Ailing Qiao and published by . This book was released on 2013 with total page 109 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidative Dehydrogenation of Ethane to Ethylene and Acetic Acid by Multicomponent Mixed Oxide Catalysts written by Sirirat Jitkarnka and published by . This book was released on 2001 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book New Insights Into the Oxidative Dehydrogenation of Propane and Ethane on Supported Vanadium Oxide Catalysts written by and published by . This book was released on 2009 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Metal Oxide Catalyst for the Oxidative Dehydrogenation of Ethane at Short Contact Times written by Derrick W. Flick and published by . This book was released on 1999 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Oxidative Dehydrogenation of Ethane on Supported Solid and Molten Alkali Metal Chloride Catalysts written by Stefan Gaab and published by . This book was released on 2009 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Oxidative Dehydrogenation of Ethane with Nitrous Oxide by Molybdenum Oxide Supported on Silica Gel written by Tsong-Jen Yang and published by . This book was released on 1979 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Development of Catalysts for the Oxidative Dehydrogenation of Ethane in a Cyclic Redox Scheme written by Seif Momen Yusuf and published by . This book was released on 2019 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mechanistic Insights on the Oxidative Dehydrogenation of Light Alkanes Catalyzed by Boron based Catalysts written by Juan Mauricio Venegas and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Light olefins such as ethylene and propylene form the foundation of the modern chemical industry, with yearly production volumes well into the hundreds of millions of metric tons. Currently, these light olefins are mainly produced via energy-intensive steam cracking. Alternatively, oxidative dehydrogenation (ODH) of light alkanes to produce olefins allows for lower operation temperatures and extended catalyst lifetimes, providing valuable process efficiencies. This route has led to significant research interest due to the wide availability of natural gas from shale deposits. Advances in this area have still not yielded catalysts that are sufficiently selective to olefins for industrial implementation, and ODH still remains a holy grail of selective alkane oxidation research. Research into selective heterogeneous catalysts for the ODH of propane has led to the extensive use of vanadium oxide-based catalysts, and studies on the surface mechanism involved have been used to improve the catalytic activity of the material. Despite decades of research, however, selectivity towards propylene has not proven satisfactory at industrially-relevant conversions. In this thesis, I will present the serendipitous discovery and subsequent development of hexagonal boron nitride (hBN) and other boron-containing catalysts as selective ODH catalysts. Specifically, I will illustrate the evolution of our understanding of the chemical origin of the reactivity of these materials, which until our initial discovery were deemed chemically inert. By combining reactivity studies with spectroscopic characterization highlighted a unique interaction between boron and oxiygen that differs from that of metal oxides. This methodical characterization of catalytic activity and structural changes of hBN during ODH prompted us to zero in on oxidized boron species, not hBN itself, as the true catalyst of alkane oxidation. In turn, this discovery led us to describe a whole class of B-containing materials that share (and often improve upon) the catalytic performance of hBN. At this point, we decided to step away from material studies and instead improve our understanding on how the catalytic performance of hBN is affected by reactor operating parameters. In particular, we investigated the role of heat and mass transfer on catalytic performance. Unexpectedly, we were once again surprised by hBN when various experimental results during these efforts suggested the significance of gas phase chemistry on ODH performance. For example, we observed that upon dilution of hBN with an inert thermal conductor (to mitigate hotspot formation), the observed reactivity scales with total bed volume rather than hBN mass. Up until these studies, we expected all reactivity to stem from oxidized boron species, but these may be only a part of a more complex surface-gas phase reaction network. The final portion of this thesis presents our latest efforts to understand the role of each reactant on surface and gas phase reaction pathways. Within this work, we incorporate water into our reaction feeds to assess its influence as a source of gas phase radical species to carry out propane activation. Indeed, we observe significant rate enhancements by addition of water. This reactivity enhancement likely involves influencing reactive species concentrations primarily in the gas phase and, to a lesser extent, altering the surface composition during ODH. Overall, this thesis expands our understanding of B-based materials as ODH catalysts and highlights the importance of considering gas phase radical chemistry in future process development.

Download or read book Energy Production Decontamination and Hydrogenation Reactions Over Perovskite Type Oxide Catalyst written by Gina Pecchi and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Heterogeneous catalysis is an important tool in industrial processes because of the recoverability of the catalysts. Transition metal perovskites-type oxides, with the general formula ABO3, offer attractive alternative to noble metal catalysts due to their high activity, high thermal stability, and low cost. Moreover, their physicochemical properties can be tailored to create a family of catalysts by varying the compositions of A and B. Indeed, the partial substitution at the A- and/or B-site with another metal cation stabilizes unusual oxidation states of the B cation with the simultaneous formation of structural defects. In particular, lanthanum-based perovskites have been used extensively and can be grouped into: (i) perovskites with oxygen vacancies as catalysts for oxidation reactions and (ii) perovskites as precursors to prepare nanosized catalysts for hydrogenation reactions. This chapter focuses on the use of pure and doped lanthanum perovskites as active and selective heterogeneous catalysts for catalytic energy production reaction (DME combustion), decontamination reactions (methane, acetyl acetate, toluene, n-hexane, and soot combustion), and hydrogenation reactions (guaiacol, glycerol, and xylose hydrogenation).