DICP OpenIR
CO2 Hydrogenation on Unpromoted and M-Promoted Co/TiO2 Catalysts (M = Zr, K, Cs): Effects of Crystal Phase of Supports and Metal-Support Interaction on Tuning Product Distribution
Li, Wenhui1; Zhang, Guanghui1; Jiang, Xiao2; Liu, Yi1; Zhu, Jie1; Ding, Fanshu1; Liu, Zhongmin3; Guo, Xinwen1; Song, Chunshan1,4,5
Corresponding AuthorGuo, Xinwen(guoxw@dlut.edu.cn) ; Song, Chunshan(csong@psu.edu)
KeywordCO2 hydrogenation cobalt catalyst crystal phase TiO2 C/H ratio
Source PublicationACS CATALYSIS
2019-04-01
ISSN2155-5435
DOI10.1021/acscatal.8b04720
Volume9Issue:4Pages:2739-2751
Funding ProjectNational Key Research and Development Program of China[2016YFB0600902-5] ; National Natural Science Foundation of China[21503029] ; Fundamental Research Funds for the Central Universities[DUT 18RC(3)057] ; Fundamental Research Funds for the Central Universities[R-500]
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
WOS SubjectChemistry, Physical
WOS Research AreaChemistry
WOS KeywordCARBON-DIOXIDE METHANATION ; METHANOL SYNTHESIS ; LOWER OLEFINS ; TIO2 PHOTOCATALYSTS ; HIGHER HYDROCARBONS ; COBALT CATALYSTS ; FE ; PERFORMANCE ; ANATASE ; RUTILE
AbstractCobalt catalysts supported on TiO2 with different crystal forms (anatase and rutile) differ sharply in CO2 conversion and product selectivity for CO2 hydrogenation. The Co/rutile-TiO2 catalyst selectively catalyzed CO2 hydrogenation to CH4, while CO is the main product on the Co/anatase-TiO2 catalyst. In situ DRIFT (diffuse reflectance infrared Fourier transform) results have partially revealed the reaction pathway of CO2 hydrogenation on these two catalysts. On Co/rutile-TiO2, the reaction proceeds through the key intermediate formate species, which is further converted to CH4. Differently, the reaction on Co/anatase-TiO2 undergoes CO2 -> *CO, which desorbs to form gas-phase CO instead of subsequent hydrogenation. The strongly bonded *CO is required to enhance the subsequent hydrogenation. By simply changing the calcination temperature of anatase TiO2, the product selectivity can be tuned from CO to CH4 with a significant increase in CO, conversion due to the surface phase transition of the anatase to the rutile phase. The addition of Zr, K, and Cs further improves the CO, CO2, and H-2 adsorption in both the capacity and strength over anatase- and rutile-supported catalysts. The Zr modification makes the reaction pathway over anatase-supported catalyst proceed via the intermediate formate species and enables the subsequent hydrogenation to CH4. In addition, the surface C/H ratio increases significantly in the presence of promoters (unpromoted < Zr-promoted < K-Zr-promoted similar to Cs-Zr-promoted), which leads to the highest C-2(+) selectivity of 17% with 70% CO, conversion over K-Zr-Co/anatase-TiO2 catalyst. These results reveal mechanistic insights into how the product distribution of Co/TiO2 catalysts can be manipulated through adjusting the adsorption performance and surface C/H ratio.
Language英语
Funding OrganizationNational Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; Fundamental Research Funds for the Central Universities
WOS IDWOS:000464075700006
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/165561
Collection中国科学院大连化学物理研究所
Corresponding AuthorGuo, Xinwen; Song, Chunshan
Affiliation1.Dalian Univ Technol, Sch Chem Engn, PSU DUT Joint Ctr Energy Res, State Key Lab Fine Chem, Dalian 116024, Peoples R China
2.Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA
3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China
4.Penn State Univ, Dept Energy & Mineral Engn, PSU DUT Joint Ctr Energy Res, Clean Fuels & Catalysis Program,EMS Energy Inst, University Pk, PA 16802 USA
5.Penn State Univ, Dept Chem Engn, PSU DUT Joint Ctr Energy Res, Clean Fuels & Catalysis Program,EMS Energy Inst, University Pk, PA 16802 USA
Recommended Citation
GB/T 7714
Li, Wenhui,Zhang, Guanghui,Jiang, Xiao,et al. CO2 Hydrogenation on Unpromoted and M-Promoted Co/TiO2 Catalysts (M = Zr, K, Cs): Effects of Crystal Phase of Supports and Metal-Support Interaction on Tuning Product Distribution[J]. ACS CATALYSIS,2019,9(4):2739-2751.
APA Li, Wenhui.,Zhang, Guanghui.,Jiang, Xiao.,Liu, Yi.,Zhu, Jie.,...&Song, Chunshan.(2019).CO2 Hydrogenation on Unpromoted and M-Promoted Co/TiO2 Catalysts (M = Zr, K, Cs): Effects of Crystal Phase of Supports and Metal-Support Interaction on Tuning Product Distribution.ACS CATALYSIS,9(4),2739-2751.
MLA Li, Wenhui,et al."CO2 Hydrogenation on Unpromoted and M-Promoted Co/TiO2 Catalysts (M = Zr, K, Cs): Effects of Crystal Phase of Supports and Metal-Support Interaction on Tuning Product Distribution".ACS CATALYSIS 9.4(2019):2739-2751.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, Wenhui]'s Articles
[Zhang, Guanghui]'s Articles
[Jiang, Xiao]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, Wenhui]'s Articles
[Zhang, Guanghui]'s Articles
[Jiang, Xiao]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, Wenhui]'s Articles
[Zhang, Guanghui]'s Articles
[Jiang, Xiao]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.