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
收藏
页码：37 / 41
页数：5
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