Role of Manganese Oxide in Syngas Conversion to Light Olefins

	Role of Manganese Oxide in Syngas Conversion to Light Olefins
	Yang, Junhao 2,3; Han, Yong 1,4; Ding, Minzheng 2; Zhu, Yifeng 2; Pan, Xiulian 2; Bao, Xinhe 2; Jiao, Feng 2,3; Liu, Zhi 1,4; Li, Jian 2,3
刊名	ACS CATALYSIS
	2017-04-01
卷号	7 期号:4 页码:2800-2804
关键词	syngas chemistry light olefins manganese oxides CO dissociation bifunctional catalysts heterogeneous catalysis oxide-zeolite
英文摘要	The key of syngas (a mixture of CO and H-2) chemistry lies in controlled dissociative activation of CO and C-C coupling. We demonstrate here that a bifunctional catalyst of partially reducible manganese oxide in combination with SAPO-34 catalyzes the selective formation of light olefins, which validates the generality of the OX-ZEO (oxide-zeolite) concept for syngas conversion. Results from in situ ambient pressure X-ray photoelectron spectroscopy, infrared spectroscopy, and temperature-programmed surface reactions reveal the critical role of oxygen vacancies on the oxide surface, where CO dissociates and is converted into surface carbonate and carbon species. They are converted to CO2 and CHx in the presence of H-2. The limited C-C coupling and hydrogenation activities of MnO enable the reaction selectivity to be controlled by the confined pores of SAPO-34. Thus, a selectivity of light olefins up to 80% is achieved, far beyond the limitation of Anderson-Shultz-Flory distribution. These findings open up possibilities to explore other active metal oxides for more efficient syngas conversion.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical
研究领域[WOS]	Chemistry
关键词[WOS]	WATER-GAS SHIFT ; FISCHER-TROPSCH SYNTHESIS ; SELECTIVE CONVERSION ; ELECTRONIC-STRUCTURE ; DEPTH-PROFILE ; CATALYSTS ; RANGE ; OXIDATION ; CERIA ; XPS
收录类别	SCI
语种	英语
WOS记录号	WOS:000398986700067
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150338]
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
作者单位	1.Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Funct Mat Informat, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 200031, Peoples R China
推荐引用方式 GB/T 7714	Yang, Junhao,Han, Yong,Ding, Minzheng,et al. Role of Manganese Oxide in Syngas Conversion to Light Olefins[J]. ACS CATALYSIS,2017,7(4):2800-2804.
APA	Yang, Junhao.,Han, Yong.,Ding, Minzheng.,Zhu, Yifeng.,Pan, Xiulian.,...&Li, Jian.(2017).Role of Manganese Oxide in Syngas Conversion to Light Olefins.ACS CATALYSIS,7(4),2800-2804.
MLA	Yang, Junhao,et al."Role of Manganese Oxide in Syngas Conversion to Light Olefins".ACS CATALYSIS 7.4(2017):2800-2804.