Improved olefin selectivity during CO hydrogenation on hydrophilic Fe/HAP catalysts

被引：13

作者：

Guo, Xinyu ^{[1
]}

Liu, Bo ^{[1
]}

Gao, Xinhua ^{[1
]}

He, Fugui ^{[1
,2
,3
]}

Ma, Qingxiang ^{[1
]}

Fan, Subing ^{[1
,2
,3
,4
]}

Zhao, Tian-sheng ^{[1
]}

Tian, Jumei ^{[4
]}

Reubroycharoen, Prasert ^{[2
,3
]}

Zhang, Jianli ^{[1
]}

机构：

[1] Ningxia Univ, Coll Chem & Chem Engn, State Key Lab High Efficiency Utilizat Coal & Gree, Yinchuan 750021, Ningxia, Peoples R China

[2] Chulalongkorn Univ, Ctr Excellence Catalysis Bioenergy & Renewable Che, Bangkok 10330, Thailand

[3] Chulalongkorn Univ, Fac Sci, Dept Chem Technol, Bangkok 10330, Thailand

[4] Ningxia Acad Metrol & Qual Inspect, Natl Qual Supervis & Inspect Ctr Coal & Coal Chem, Dept Chem Technol, Yinchuan 750200, Peoples R China

来源：

CATALYSIS TODAY | 2023年 / 410卷

基金：

中国科学院西部之光基金;

关键词：

CO hydrogenation; Hydroxyapatite; Iron-supported catalyst; Secondary reaction; FISCHER-TROPSCH SYNTHESIS; IRON CATALYSTS; SECONDARY TRANSFORMATIONS; HYDROXYAPATITE CATALYSTS; CARBON-MONOXIDE; WATER; PERFORMANCE; ADSORPTION; SURFACES; PROMOTER;

D O I：

10.1016/j.cattod.2022.04.013

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The hydrophilic/hydrophobic properties of catalysts greatly influence product distribution by tuning the sec-ondary reactions during Fischer-Tropsch synthesis. Studies have confirmed that hydrophilic modification can inhibit secondary reactions. Herein, hydroxyapatite (HAP)-supported Fe catalysts (Fe/HAP) were prepared using an impregnation method. The effect of the catalyst surface properties on the product distribution in CO hy-drogenation was studied. The surface hydroxyl groups on Fe/HAP promoted the growth of carbon chains and improved olefin selectivity. The addition of Na as a promoter to Fe/HAP suppressed the formation of undesirable CH4, further improving the selectivity for light olefins and C5+ hydrocarbons. Compared with Fe2O3, Fe/HAP showed lower CH4 selectivity (15%) and higher C5+ selectivity (45%). Meanwhile, the Fe/HAP-Na catalysts with a higher selectivity of light olefins (with an O/P ratio reaching 4.51).

引用

页码：193 / 204

页数：12

共 69 条

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