title: Selective conversion of syngas to light olefins.
abstract: Although considerable progress has been made in direct synthesis gas (syngas) conversion to light olefins (C2(=)-C4(=)) via Fischer-Tropsch synthesis (FTS), the wide product distribution remains a challenge, with a theoretical limit of only 58% for C2-C4 hydrocarbons. We present a process that reaches C2(=)-C4(=) selectivity as high as 80% and C2-C4 94% at carbon monoxide (CO) conversion of 17%. This is enabled by a bifunctional catalyst affording two types of active sites with complementary properties. The partially reduced oxide surface (ZnCrO(x)) activates CO and H2, and C-C coupling is subsequently manipulated within the confined acidic pores of zeolites. No obvious deactivation is observed within 110 hours. Furthermore, this composite catalyst and the process may allow use of coal- and biomass-derived syngas with a low H2/CO ratio.
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Feng
authors.initials: F
authors.lastname: Jiao
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Jinjing
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China. panxl@dicp.ac.cn xhbao@dicp.ac.cn.
authors.forename: Xiulian
authors.initials: X
authors.lastname: Pan
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Jianping
authors.initials: J
authors.lastname: Xiao
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Haobo
authors.initials: H
authors.lastname: Li
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Hao
authors.initials: H
authors.lastname: Ma
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Mingming
authors.initials: M
authors.lastname: Wei
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Pan
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China.
authors.forename: Zhongyue
authors.initials: Z
authors.lastname: Zhou
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Mingrun
authors.initials: M
authors.lastname: Li
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Shu
authors.initials: S
authors.lastname: Miao
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Jian
authors.initials: J
authors.lastname: Li
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Yifeng
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Dong
authors.initials: D
authors.lastname: Xiao
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Ting
authors.initials: T
authors.lastname: He
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Junhao
authors.initials: J
authors.lastname: Yang
authors.affiliation: National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China.
authors.forename: Fei
authors.initials: F
authors.lastname: Qi
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China.
authors.forename: Qiang
authors.initials: Q
authors.lastname: Fu
authors.affiliation: State Key Laboratory of Catalysis, 2011-Collaborative Innovation Center of Chemistry for Energy Materials, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China. panxl@dicp.ac.cn xhbao@dicp.ac.cn.
authors.forename: Xinhe
authors.initials: X
authors.lastname: Bao