Activation of small molecules over praseodymium-doped ceria

被引：3
作者：
Guo, Meiling [1 ]
Liu, Xuebin [1 ]
Amorelli, Angelo [2 ]
机构：
[1] BP China Dalian Off, Energy Innovat Lab, Dalian 116023, Liaoning, Peoples R China
[2] BP Int Ltd, Grp Res, Sunbury On Thames TW16 7LN, Middx, England
来源：
CHINESE JOURNAL OF CATALYSIS | 2019年 / 40卷 / 11期
关键词：
CeO2; Pr dopant; Oxygen vacancy; Degree of reduction; Propane dehydrogenation; PR MIXED OXIDES; DEFECT SITES; OXYGEN VACANCY; PROPANE; CATALYSTS; CEO2; DEHYDROGENATION; OXIDATION; SURFACE; PERFORMANCE;
D O I：
10.1016/S1872-2067(19)63369-3
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Praseodymium can modify the properties of ceria (CeO2), changing the electronic structure, reducibility and catalytic behavior. Oxygen vacancies in the ceria-based samples can activate C-O and C-H bonds of small molecules such as CO2 and propane. Partially reduced Pr/CeO2-x can selectively activate C-H of propane, giving a propylene selectivity of ca. 75% at a propane conversion of 5% to 10%. Excess reduction of Pr/CeO2-x induces coking reactions during propane dehydrogenation, resulting in fast catalyst deactivation. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：1800 / 1809
页数：10
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