Study on CaO-promoted Co/AC catalysts for synthesis of higher alcohols from syngas

被引：56

作者：

Du, Hong ^{[1
,3
]}

Zhu, Hejun ^{[1
]}

Chen, Xingkun ^{[1
,3
]}

Dong, Wenda ^{[1
]}

Lu, Wei ^{[1
]}

Luo, Wenting ^{[1
,3
]}

Jiang, Miao ^{[1
,3
]}

Liu, Tao ^{[1
]}

Ding, Yunjie ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100039, Peoples R China

来源：

FUEL | 2016年 / 182卷

关键词：

Co/AC catalyst; CaO-promoted; Co2C species; Synthesis of C-1-C-16 alcohols; Syngas; FISCHER-TROPSCH SYNTHESIS; COPPER-COBALT CATALYSTS; CO HYDROGENATION; CARBON-MONOXIDE; SYNTHESIS GAS; K CATALYSTS; PERFORMANCE; CARBIDE; SELECTIVITY; CONVERSION;

D O I：

10.1016/j.fuel.2016.05.089

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

An alternative CaO-promoted Co/AC catalysts with high selectivity of C-1-C-16 alcohols were synthesized and systematically studied. The catalysts were characterized by means of N-2-physisorption, XRD, H2-TPR, CO-chemisorption and HRTEM. Then the activated catalysts were used in the CO hydrogenation reaction for the alcohols synthesis. Reaction results showed that CaO promoter improved the yield of C-1-C-16 alcohols significantly from 9.9% to 15.0% in comparison with un-promoted Co/AC catalyst. Characterization results indicated that the addition of CaO promoted the formation of hcp metallic Co, which was further liable to conversion into Co2C species. It was suggested that Co2C species was related to synthesis of alcohols. It was found that the appropriate relative ratio of Co2C/Co was beneficial to synthesis of mixed C-1-C-16 alcohols over the CaO-promoted Co/AC catalysts. The synergistic effect of metallic Co nanoparticles and Co2C species, which contact intimately, is responsible for the alcohols synthesis. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：42 / 49

页数：8

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