Study on the photocatalytic oxidative dehydrogenation of ethane with CO2 over Pd-Rh /TiO2 catalyst

被引：0

作者：

Li Q. ^{[1
]}

Tang S. ^{[1
]}

Yue H. ^{[1
,2
]}

Liu C. ^{[1
]}

Ma K. ^{[1
]}

Zhong S. ^{[1
]}

Liang B. ^{[1
,2
]}

机构：

[1] School of Chemical Engineering, Sichuan University, Chengdu, 610065, Sichuan

[2] Institute of New Energy and Low Carbon Technology, Sichuan University, Chengdu, 610207, Sichuan

来源：

Huagong Xuebao/CIESC Journal | 2020年 / 71卷 / 08期

关键词：

Alkane; Carbon dioxide; Catalysis; Dehydrogenation; Oxidation; Palladium; Rhodium; Titanium dioxide;

D O I：

10.11949/0438-1157.20200172

中图分类号：

学科分类号：

摘要：

Pd-Rh/ TiO2 catalyst was prepared by impregnation reduction method for photocatalytic CO2 oxidative dehydrogenation of ethane to C2H4 at room temperature. Effects of different Pd/Rh ratio of the catalysts on the photocatalytic performances were studied. Morphology characteristics of the catalysts were examined by XRD, EDX-mapping, TEM, HRTEM and XPS. The photocatalytic performances of the catalysts were measured by UV-Vis and PL. The mechanism of oxidative dehydrogenation of ethane was examined with in situ FTIR. The internal electrons transfer between Pd cluster and Rh cluster effectively improves the photocatalytic performance. It reduces the electron density of the Pd surface, and promotes the separation of e- and h+. It also improves the adsorption of C2H4 and CO2 on the surface of the catalyst. The contrast experiments of CO2 and Ar prove that CO2 does help to eliminate carbon deposed on the catalyst and to promote ethylene generating with itself reduced by H2. © 2020, Chemical Industry Press Co., Ltd. All right reserved.

引用

页码：3556 / 3564

页数：8

共 48 条

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