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Raney nickel-assisted synthesis of heterocycles
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ISBN: 032399492X 0323994938 9780323994934 9780323994927 Year: 2022 Publisher: Amsterdam, Netherlands ; Oxford, England ; Cambridge, Massachusetts : Elsevier,

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Steric Effects in the Chemisorption of Vibrationally Excited Methane on Nickel
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ISBN: 3642276784 3642276792 9786613574121 1280396202 Year: 2012 Publisher: Berlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer,

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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.


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Catalysts Deactivation, Poisoning and Regeneration
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ISBN: 3039215477 3039215469 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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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.

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