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Promotion effects of potassium on the activity and selectivity of Pt/zeolite catalysts for reverse water gas shift reaction
Yang, Xiaoli1,2; Su, Xiong1; Chen, Xiaodong1,2; Duan, Hongmin1; Liang, Binglian1,2; Liu, Qinggang1; Liu, Xiaoyan1; Ren, Yujing1,2; Huang, Yanqiang1; Zhang, Tao1
关键词Rwgs Kltl Zeolite Potassium Promoter Formate
刊名APPLIED CATALYSIS B-ENVIRONMENTAL
2017-11-05
DOI10.1016/j.apcatb.2017.05.067
216页:95-105
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Engineering, Environmental ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]METAL-SUPPORT INTERACTIONS ; CO2 HYDROGENATION ; ORGANIC FRAMEWORKS ; CARBON-DIOXIDE ; PLATINUM CATALYSTS ; CU/SIO2 CATALYSTS ; PT/TIO2 CATALYSTS ; TEMPERATURE ; ADSORPTION ; REDUCTION
英文摘要Catalytic hydrogenation of carbon dioxide to CO by reverse water gas shift reaction plays a vital role in the recycling of the abundant carbon source. Here, the reaction over a series of zeolite L-supported platinum catalysts was systematically investigated to study the promoting role of potassium. The results of activity tests showed that controlled addition of potassium promoter to Pt/L catalyst was beneficial for the catalytic activity and selectivity. It was observed that cage encapsulation by zeolite pores could stabilize Pt nano-particles even at severe reaction conditions. Furthermore, X-ray absorption near edge structure and X-ray photoelectron spectra results demonstrated that the chemical state of platinum was altered by the additional potassium promoter, providing evidence for the formation of Pt-O(OH)-K interfacial sites. Thereafter, the Pt-O(OH)-K interfaces, acting as main active sites to adsorb CO2 and produce bridge-bonded formate intermediates, were identified by a set of in -situ diffuse reflectance Fourier transform infrared spectroscopy and microcalorimetry measurements. This finding provides new insights into the use of a variety of zeolite as carriers for highly dispersed noble metal in catalytic CO2 reduction. (C) 2017 Elsevier B.V. All rights reserved.
语种英语
WOS记录号WOS:000402816700010
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152230
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Yang, Xiaoli,Su, Xiong,Chen, Xiaodong,et al. Promotion effects of potassium on the activity and selectivity of Pt/zeolite catalysts for reverse water gas shift reaction[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2017,216:95-105.
APA Yang, Xiaoli.,Su, Xiong.,Chen, Xiaodong.,Duan, Hongmin.,Liang, Binglian.,...&Zhang, Tao.(2017).Promotion effects of potassium on the activity and selectivity of Pt/zeolite catalysts for reverse water gas shift reaction.APPLIED CATALYSIS B-ENVIRONMENTAL,216,95-105.
MLA Yang, Xiaoli,et al."Promotion effects of potassium on the activity and selectivity of Pt/zeolite catalysts for reverse water gas shift reaction".APPLIED CATALYSIS B-ENVIRONMENTAL 216(2017):95-105.
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