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Raney Nickel-Assisted Synthesis of Heterocycles covers the synthesis of heterocycles using Raney nickel. The book focuses on the use of Raney-Ni, a common catalyst in hydrogenation reaction and its uses in the synthesis and preparation of heterocycles. Furthermore, it explains how the development of new approaches and strategic deployments in known approaches for the formation of complex heterocyclic compounds continue to drive the field of synthetic organic chemistry, along with updates on efforts to prepare heterocycles through the development of new and efficient synthetic transformations.
Heterocyclic compounds --- Nickel catalysts. --- Catalysts --- Cycloids, Mixed (Chemistry) --- Heteroatomic compounds --- Heterocycles --- Mixed cycloids (Chemistry) --- Organic cyclic compounds --- Synthesis. --- Heterocyclic Compounds --- Nickel --- Reducing Agents --- chemical synthesis --- chemistry
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Bruce Yoder’s thesis outlines his investigation of the dissociative chemisorption of methane (CH4) on a nickel single crystal. In this work Bruce uses a molecular beam and infrared laser techniques to prepare methane in excited rovibrational states. The excited methane molecules are aligned relative to the target nickel surface. Bruce describes the discovery and exploration of a previously unknown steric effect in the dissociation reaction between a vibrationally excited methane molecule and a nickel crystal. From these studies we see that methane molecules are up to twice as reactive when the vibration is aligned parallel rather than perpendicular to the surface. This discovery will help guide the development of detailed predictive models of methane chemisorption, which in turn may lead to better catalysts for the synthesis of several industrially relevant chemicals, including hydrogen fuel from natural gas.
Chemical reactions. --- Chemisorption. --- Nickel catalysts. --- Chemical reactions --- Chemisorption --- Nickel catalysts --- Chemistry --- Physical Sciences & Mathematics --- Physical & Theoretical Chemistry --- Stereochemistry. --- Nickel. --- Methane. --- Methyl hydride --- Atoms --- Molecular asymmetry --- Space arrangement --- Chemistry. --- Physical chemistry. --- Chemistry, Physical and theoretical. --- Catalysis. --- Physical Chemistry. --- Theoretical and Computational Chemistry. --- Activation (Chemistry) --- Chemistry, Physical and theoretical --- Surface chemistry --- Chemistry, Theoretical --- Physical chemistry --- Theoretical chemistry --- Physical sciences --- Alkanes --- Manure gases --- Biogas --- Transition metals --- Chemical structure --- Isomerism --- Polarization (Light) --- Chemistry, Physical organic. --- Chemistry, Physical organic --- Chemistry, Organic
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Catalyst lifetime represents one of the most crucial economic aspects in industrial catalytic processes, due to costly shutdowns, catalyst replacements, and proper disposal of spent materials. Not surprisingly, there is considerable motivation to understand and treat catalyst deactivation, poisoning, and regeneration, which causes this research topic to continue to grow. The complexity of catalyst poisoning obviously increases along with the increasing use of biomass/waste-derived/residual feedstocks and with requirements for cleaner and novel sustainable processes. This book collects 15 research papers providing insights into several scientific and technical aspects of catalyst poisoning and deactivation, proposing more tolerant catalyst formulations, and exploring possible regeneration strategies.
cyclic operation --- n/a --- nickel catalysts --- regeneration --- Cu/SSZ-13 --- syngas --- NH3-SCR --- oxysulfate --- Ni-catalyst --- MW incinerator --- iso-octane --- hydrogenation --- dry reforming of methane --- oxysulfide --- Co-Zn/H-Beta --- Low-temperature catalyst --- Rh catalysts --- deactivation --- vanadia species --- SO2 poisoning --- vehicle emission control --- barium carbonate --- sodium ions --- sulfur deactivation --- tetragonal zirconia --- sulfur poisoning --- Liquefied natural gas --- water --- deactivation by coking --- phase stabilization --- catalyst --- NO removal --- physico-chemical characterization --- octanol --- SEM --- aluminum sulfate --- oxygen storage capacity --- unusual deactivation --- diesel --- nitrous oxide --- exhaust gas --- over-reduction --- poisoning --- catalyst deactivation --- ammonium sulfates --- CO2 reforming --- SO3 --- Rh --- in situ regeneration --- copper --- V2O5–WO3/TiO2 catalysts --- palladium sulfate --- Selective Catalytic Reduction (SCR) --- biogas --- thermal stability --- phthalic anhydride --- octanal --- natural gas --- sulfur-containing sodium salts --- washing --- coke deposition --- vanadia-titania catalyst --- CPO reactor --- homogeneous catalysis --- NOx reduction by C3H8 --- nitrogen oxides --- effect of flow rate --- DeNOx --- catalytic methane combustion --- deactivation mechanism --- TEM --- catalyst durability --- V2O5-WO3/TiO2 catalysts
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