Selective conversion of syngas to light olefins

被引：1334

作者：

Jiao, Feng ^{[1
]}

Li, Jinjing ^{[1
]}

Pan, Xiulian ^{[1
]}

Xiao, Jianping ^{[1
]}

Li, Haobo ^{[1
]}

Ma, Hao ^{[1
]}

Wei, Mingming ^{[1
]}

Pan, Yang ^{[2
]}

Zhou, Zhongyue ^{[2
]}

Li, Mingrun ^{[1
]}

Miao, Shu ^{[1
]}

Li, Jian ^{[1
]}

Zhu, Yifeng ^{[1
]}

Xiao, Dong ^{[1
]}

He, Ting ^{[1
]}

Yang, Junhao ^{[1
]}

Qi, Fei ^{[2
]}

Fu, Qiang ^{[1
]}

Bao, Xinhe ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat 2011, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China

[2] Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230029, Peoples R China

来源：

SCIENCE | 2016年 / 351卷 / 6277期

基金：

中国国家自然科学基金;

关键词：

PHOTOIONIZATION MASS-SPECTROMETRY; SYNTHESIS GAS; CO HYDROGENATION; CATALYSTS; KETENE; TRANSFORMATION; NANOPARTICLES; HYDROCARBONS; CHEMISTRY;

D O I：

10.1126/science.aaf1835

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Although considerable progress has been made in direct synthesis gas (syngas) conversion to light olefins (C-2(=)-C-4(=)) via Fischer-Tropsch synthesis (FTS), the wide product distribution remains a challenge, with a theoretical limit of only 58% for C-2-C-4 hydrocarbons. We present a process that reaches C-2(=)-C-4(=) selectivity as high as 80% and C-2-C-4 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 (ZnCrOx) activates CO and H-2, 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 H-2/CO ratio.

引用

页码：1065 / 1068

页数：4

共 26 条

[1] REACTIONS OF FREE METHYLENE - PHOTOLYSIS OF KETENE IN PRESENCE OF OTHER GASES [J].