Enhanced CO2 Methanation Activity of Ni/Anatase Catalyst by Tuning Strong Metal-Support Interactions

doi:10.1021/acscatal.9b00401

	Enhanced CO2 Methanation Activity of Ni/Anatase Catalyst by Tuning Strong Metal-Support Interactions
	Li, Jian 1,2; Lin, Yaping 1,2; Pan, Xiulian 2; Miao, Dengyun 2; Ding, Ding 3; Cui, Yi 3; Dong, Jinhu 1,2; Bao, Xinhe 2
刊名	ACS CATALYSIS
	2019-07-01
卷号	9 期号:7 页码:6342-6348
关键词	CO2 methanation anatase nickel-based supported catalyst strong metal-support interactions
ISSN号	2155-5435
DOI	10.1021/acscatal.9b00401
通讯作者	Pan, Xiulian(panxl@dicp.ac.cn) ; Bao, Xinhe(xhbao@dicp.ac.cn)
英文摘要	Strong metal-support interaction (SMSI) has been widely recognized for platinum-group metals on reducible oxide supports. Herein we report that the catalytic activity of Ni catalyst in CO2 methanation is significantly suppressed over conventional anatase (a-TiO2) support due to the SMSI-induced formation of a titania overlayer around the Ni nanoparticles. Furthermore, CO is the only product . In contrast, the NH3-treatment and H-2-treatment of the a-TiO2 support enhance remarkably the activity of Ni, i.e., CO2 conversion increases by 1 order of magnitude and CO2 is hydrogenated almost exclusively to CH4. X-ray photoelectron spectroscopy (XPS), H-2 and CO chemisorption, and low temperature electron paramagnetic resonance (EPR) reveal that the enhanced CO2 methanation activity may be related with the Ti3+ species in the bulk that are generated by reduction treatment, which likely have altered the SMSI between Ni and a-TiO2 support. This simple reduction treatment approach may be applicable to modulate the SMSI of other reducible oxide-supported metal catalysts.
资助项目	Ministry of Science and Technology of China[2016YFA0202803] ; National Science Foundation of China[91645204] ; National Science Foundation of China[21425312] ; National Science Foundation of China[21621063] ; Chinese Academy of Sciences[XDA21020400]
WOS关键词	CRYSTALLITE SIZE ; HYDROGENATION ; NANOPARTICLES ; ENCAPSULATION ; REDUCTION ; STABILITY ; SURFACE ; MODEL ; TITANIA ; WATER
WOS研究方向	Chemistry
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000474812400054
资助机构	Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Ministry of Science and Technology of China ; Ministry of Science and Technology of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/175587]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Pan, Xiulian; Bao, Xinhe
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 3.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Vacuum Interconnected Nanotech Workstn, Suzhou 215123, Peoples R China
推荐引用方式 GB/T 7714	Li, Jian,Lin, Yaping,Pan, Xiulian,et al. Enhanced CO2 Methanation Activity of Ni/Anatase Catalyst by Tuning Strong Metal-Support Interactions[J]. ACS CATALYSIS,2019,9(7):6342-6348.
APA	Li, Jian.,Lin, Yaping.,Pan, Xiulian.,Miao, Dengyun.,Ding, Ding.,...&Bao, Xinhe.(2019).Enhanced CO2 Methanation Activity of Ni/Anatase Catalyst by Tuning Strong Metal-Support Interactions.ACS CATALYSIS,9(7),6342-6348.
MLA	Li, Jian,et al."Enhanced CO2 Methanation Activity of Ni/Anatase Catalyst by Tuning Strong Metal-Support Interactions".ACS CATALYSIS 9.7(2019):6342-6348.