Deactivation behavior of CrOy/Al2O3-ZrO2 catalysts in the dehydrogenation of propane to propylene by lattice oxygen

被引：11

作者：

Kim, Tae Hyeop ^{[1
]}

Gim, Min Yeong ^{[1
]}

Song, Ji Hwan ^{[1
]}

Choi, Won Choon ^{[2
]}

Park, Yong-Ki ^{[2
]}

Hong, Ung Gi ^{[3
]}

Park, Deuk Soo ^{[3
]}

Song, In Kyu ^{[1
]}

机构：

[1] Seoul Natl Univ, Sch Chem & Biol Engn, Inst Chem Proc, Seoul 151744, South Korea

[2] Korea Res Inst Chem Technol, Green Chem & Catalysis Res Ctr, Daejeon 305600, South Korea

[3] SK Gas R&D Ctr, ECO Hub, Seongnam Si 463400, Gyeonggi Do, South Korea

来源：

CATALYSIS COMMUNICATIONS | 2017年 / 97卷

关键词：

Propane; Oxidative dehydrogenation; alpha-Chromia-alumina; Deactivation; Chromia catalyst; PARAFFINS; OLEFINS;

D O I：

10.1016/j.catcom.2017.04.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of thermally deactivated CrOy/Al2O3-ZrO2 catalysts with different Zr/Al molar ratio (denoted as Cr/AZX, X = Zr/Al molar ratio) were prepared for use in the dehydrogenation of propane to propylene by lattice oxygen of the catalysts. It was found that alpha-chromia-alumina phase was formed as a result of catalyst deactivation. The relative distribution of chromium species was different depending on Zr/Al molar ratio of the catalysts. Among the catalysts, Cr/AZ-0.07 catalyst with the lowest amount of a-chromia-alumina and the largest amount of active chromium species (Cr3+) showed the best catalytic activity in the dehydrogenation of propane to propylene.

引用

页码：37 / 41

页数：5

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