Reverse water-gas shift in a packed bed DBD reactor: Investigation of metal-support interface towards a better understanding of plasma catalysis

Reverse water-gas shift in a packed bed DBD reactor: Investigation of metal-support interface towards a better understanding of plasma catalysis
复制标题

填充床 DBD 反应器中的反向水煤气变换:研究金属-载体界面以更好地理解等离子体催化

DOI:
10.1016/j.apcata.2019.117407
复制
发表时间:
2020-02
影响因子:
5.5
通讯作者:
Ye Daiqi
Ye Daiqi
中科院分区:
化学2区
文献类型:
--
作者:
Sun Yuhai;Li Jingjing;Chen Peirong;Wang Bangfen;Wu Junliang;Fu Mingli;Chen Limin;Ye Daiqi

文献摘要

参考文献

相似文献

采用共沉淀法合成了负载钯的ZnO (Pd/ZnO)催化剂,并对其在等离子催化逆水气转换(RWGS)反应中的应用进行了评价。“Pd/ZnO +等离子体”的CO2转化率为32.5%,是“ZnO +等离子体”(17.3%)的2倍左右。通过x射线衍射、高分辨率透射电镜、程序升温还原和准原位x射线光电子能谱对催化剂进行表征,发现在Pd活性相和ZnO载体的界面上可能形成ZnOx@PdZn (ZnOx修饰的PdZn合金)。利用等离子体激发CO2程序升温解吸和原位傅里叶变换红外光谱技术,系统地研究了ZnOx@PdZn在等离子体催化CO2转化中的作用。研究发现,Pd-ZnO界面处的ZnOx@PdZn通过促进双齿碳酸盐和双齿甲酸酯的生成,显著提高了等离子体催化CO2转化。原位拉曼光谱研究证明ZnOx@PdZn在RWGS过程中基本保持完整。因此,我们的原位光谱研究结果揭示了Pd-ZnO界面上的ZnOx@PdZn有利于CO2的活化,从而导致更高的等离子体催化CO2转化性能。
Palladium-loaded ZnO (Pd/ZnO) catalyst was synthesized by co-precipitation method and evaluated for plasmacatalytic reverse water-gas shift (RWGS) reaction. A CO2 conversion of 32.5 % was achieved on "Pd/ZnO + Plasma", and was around two times higher than that of "ZnO + Plasma" (17.3 %). Catalyst characterization by X-ray diffraction, high-resolution transmission electron microscopy, temperature-programmed reduction and quasi in situ X-ray photoelectron spectroscopy revealed the possible formation of ZnOx@PdZn (ZnOx decorated PdZn alloy) at the interface of Pd active phase and ZnO support. The role of ZnOx@PdZn in plasma-catalytic CO2 conversion was systematically investigated by plasma-excited CO2 temperature-programmed desorption and in situ Fourier transform infrared spectroscopy. It was found that ZnOx@PdZn at Pd-ZnO interface improved significantly plasma-catalytic CO2 conversion by promoting the production of bidentate carbonate and bidentate formate species. In situ Raman spectroscopy studies proved that the ZnOx@PdZn remained largely intact during the RWGS process. Our in situ spectroscopic findings thus unveil that the ZnOx@PdZn at Pd-ZnO interface favors the activation of CO2 and, consequently, leads to a higher plasma-catalytic performance for CO2 conversion.
Pd/ZnO/Al2O3 上 CO2 和 H-2 合成甲醇:甲醇选择性的催化剂结构依赖性
DOI: 10.1016/j.apcata.2016.01.006
发表时间: 2016
期刊: Applied Catalysis A: General
影响因子: --
作者:
Xu Jinghua;Su Xiong;Liu Xiaoyan;Pan Xiaoli;Pei Guangxian;Huang Yanqiang;Wang Xiaodong;Zhang Tao;Geng Haoran
通讯作者: Geng Haoran
DOI: 10.1016/j.apcatb.2018.08.011
发表时间: 2018-12
期刊: Applied Catalysis B: Environmental
影响因子: --
作者:
A. Parastaev;W. Hoeben;Bert E.J.M. van Heesch;N. Kosinov;E. Hensen
通讯作者: A. Parastaev;W. Hoeben;Bert E.J.M. van Heesch;N. Kosinov;E. Hensen
DOI: 10.1088/0022-3727/44/27/274007
发表时间: 2011-07
期刊: Journal of Physics D: Applied Physics
影响因子: --
作者:
X. Tu;H. J. Gallon;Bernard Nisol;Sven Stauss;V. Gibalov;G. Pietsch
通讯作者: X. Tu;H. J. Gallon;Bernard Nisol;Sven Stauss;V. Gibalov;G. Pietsch
DOI: 10.1021/acscatal.7b02733
发表时间: 2018-01-01
期刊: ACS CATALYSIS
影响因子: 12.9
作者:
Wang, Li;Yi, Yanhui;Tu, Xin
通讯作者: Tu, Xin
DOI: 10.1016/j.cej.2018.05.057
发表时间: 2018-09-15
影响因子: 15.1
作者:
Witoon, Thongthai;Kidkhunthod, Pinit;Limtrakul, Jumras
通讯作者: Limtrakul, Jumras