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首页> 外文期刊>Chemical Engineering Research & Design: Transactions of the Institution of Chemical Engineers >Preparation of high temperature water gas shift catalyst with coprecipitation method in microemulsion system
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Preparation of high temperature water gas shift catalyst with coprecipitation method in microemulsion system

机译：制备高温水煤气转移共沉淀法的催化剂微乳液体系

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摘要

In this paper nanocrystalline mesoporous iron-based high temperature water gas shift catalysts were prepared by coprecipitation method in water-in-oil (W/O) microemulsion. The prepared samples were characterized by using X-ray diffraction (XRD), N-2 adsorption (BET), temperature-programmed reduction (TPR), Fourier transform infrared spectroscopy (FTIR), transmission and scanning electron microscopies (TEM, SEM) techniques. The results revealed that the Fe2O3 possessed low specific surface area and catalytic activity in high temperature water gas shift reaction. The addition of copper to Fe2O3 favored the active phase formation and significantly decreased the reduction temperature of hematite to magnetite and consequently improved the catalytic activity of Fe2O3. The incorporation of chromium in hematite increased the surface area and catalytic activity of Fe2O3. The results also showed that the prepared Fe-Cr-Cu catalyst showed higher activity than the commercial catalyst. In addition, the effects of GHSV, steam/gas ratio, and calcination temperature were investigated on the catalytic performance of Fe-Cr-Cu catalyst. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
机译：摘要纳米晶体介孔铁基高温水煤气转移催化剂是由共沉淀法在油包水(W / O)微乳液。样本使用x射线的特征衍射(XRD)、n -吸附(BET)程序升温还原(TPR),傅里叶变换红外光谱(FTIR),透射和扫描电子显微镜(TEM, SEM)技术。Fe2O3拥有低比表面积和催化活性在高温水中气体转移反应。有利于形成和活动阶段显著减少温度下降赤铁矿的磁铁矿和结果改进的Fe2O3的催化活性。将铬在赤铁矿增加Fe2O3的表面积和催化活性。结果还表明,准备显示活动高于Fe-Cr-Cu催化剂商业的催化剂。GHSV、蒸汽/气比和煅烧温度对催化研究Fe-Cr-Cu催化剂的性能。化学工程师学会。爱思唯尔帐面价值保留所有权利。

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