Promotional effects in alumina and silica supported bimetallic Ni-Fe catalysts during CO2 hydrogenation

被引：71

作者：

Pandey, Dharmendra ^{[1
]}

Deo, Goutam ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Chem Engn, Kanpur 208016, Uttar Pradesh, India

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2014年 / 382卷

关键词：

Carbon dioxide hydrogenation; Nickel; Iron; Bimetallic catalyst; PARTIAL OXIDATION; NICKEL-CATALYSTS; NI-FE/AL2O3; CATALYST; OXIDE CATALYSTS; IRON; METHANE; GAS; SYNGAS; SYSTEM; NANOPARTICLES;

D O I：

10.1016/j.molcata.2013.10.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Nickel (Ni), iron (Fe) and three series of Ni-Fe bimetallic catalysts supported on alumina and silica were tested for the CO2 hydrogenation reaction at 448-548 K. The supported Ni-Fe catalysts containing 75 wt.% of the total metal loading as Ni and 25 wt.% as Fe showed a significantly better CO2 conversion and higher methane (CH4) yield compared to the Ni and Fe supported catalysts. Furthermore, the enhancements of conversion and yield were higher for the alumina supported catalysts than for the silica supported catalysts. The enhancements appear to be independent of total metal loading. It appears that the enhancements of conversion and yield were due to the formation of a suitable Ni-Fe alloy, and/or increase in the number of metal sites, and/or the availability of adsorbed CO2 species. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：23 / 30

页数：8

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