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Can I read Catalytic dehydrogenation of isobutane over supported MoOx/K-Al2O3 on EtoBox?
Catalytic dehydrogenation of isobutane over supported MoOx/K-Al2O3 by Emily Cheng; Justin Notestein is a Materials Science article available to read on EtoBox.
What is Catalytic dehydrogenation of isobutane over supported MoOx/K-Al2O3 about?
Potassium-promoted, alumina-supported molybdenum oxide is investigated for non-oxidative isobutane dehydrogenation, with an emphasis on sub-monolayer coverages. After pre-reduction in H 2 , initial isobutene turnover frequencies are largely independent of Mo loading, but deactivation rate constants increase by >100-fold as loadings increase to monolayer, leading to a >13-fold difference in reaction rates at extended time on stream. Mo oxidation state by in situ X-ray absorption spectroscopy is stable with time on stream, arguing against continued catalyst restructuring as the origin of deactivation. Across the set of loadings, isobutane dehydrogenation and coke formation are correlated with partially reduced Mo 4+ and deeply reduced Mo d+ sites, respectively. Given the stable dehydrogenation activity of low-loaded Mo, in contrast to the rapid deactivation of high-loaded Mo, sub-monolayer metal oxides may warrant further investigation as light alkane dehydrogenation even when their bulk counterparts may not.
Who reads Catalytic dehydrogenation of isobutane over supported MoOx/K-Al2O3?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Emily Cheng; Justin Notestein
- Publisher
- Elsevier BV
- Published
- 2021
- Language
- EN
- Field
- Materials Science (Physical Sciences)