Tandem In2O3-Pt/Al2O3 catalyst for coupling of propane dehydrogenation to selective H2 combustion

doi:10.1126/science.abd4441

GSTDTAP > 气候变化

DOI	10.1126/science.abd4441
	Tandem In₂O₃-Pt/Al₂O₃ catalyst for coupling of propane dehydrogenation to selective H₂ combustion
	Huan Yan; Kun He; Izabela A. Samek; Dian Jing; Macy G. Nanda; Peter C. Stair; Justin M. Notestein
	2021-03-19
发表期刊	Science
出版年	2021
英文摘要	Catalysts for the oxidative dehydrogenation of propane to propylene and water become less selective with increasing conversion because propylene itself is more readily oxidized than propane. Yan et al. created nanoscale tandem catalysts by growing an ∼2-nanometer shell of indium oxide, a selective hydrogen combustion catalyst, over a propane dehydrogenation catalyst, platinum nanoparticles supported on alumina spheres (see the Perspective by Pei and Gong). This overcoat exposed the platinum nanoparticles for propane dehydrogenation. Surface hydrogen atoms were oxidized at the indium oxide–platinum interface. This approach boosted yields of propylene to up to 30%. Science , this issue p. [1257][1]; see also p. [1203][2] Tandem catalysis couples multiple reactions and promises to improve chemical processing, but precise spatiotemporal control over reactive intermediates remains elusive. We used atomic layer deposition to grow In2O3 over Pt/Al2O3, and this nanostructure kinetically couples the domains through surface hydrogen atom transfer, resulting in propane dehydrogenation (PDH) to propylene by platinum, then selective hydrogen combustion by In2O3, without excessive hydrocarbon combustion. Other nanostructures, including platinum on In2O3 or platinum mixed with In2O3, favor propane combustion because they cannot organize the reactions sequentially. The net effect is rapid and stable oxidative dehydrogenation of propane at high per-pass yields exceeding the PDH equilibrium. Tandem catalysis using this nanoscale overcoating geometry is validated as an opportunity for highly selective catalytic performance in a grand challenge reaction. [1]: /lookup/doi/10.1126/science.abd4441 [2]: /lookup/doi/10.1126/science.abh0424
领域	气候变化 ; 资源环境
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文献类型	期刊论文
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/319939
专题	气候变化资源环境科学
推荐引用方式 GB/T 7714	Huan Yan,Kun He,Izabela A. Samek,et al. Tandem In₂O₃-Pt/Al₂O₃ catalyst for coupling of propane dehydrogenation to selective H₂ combustion[J]. Science,2021.
APA	Huan Yan.,Kun He.,Izabela A. Samek.,Dian Jing.,Macy G. Nanda.,...&Justin M. Notestein.(2021).Tandem In₂O₃-Pt/Al₂O₃ catalyst for coupling of propane dehydrogenation to selective H₂ combustion.Science.
MLA	Huan Yan,et al."Tandem In₂O₃-Pt/Al₂O₃ catalyst for coupling of propane dehydrogenation to selective H₂ combustion".Science (2021).