文献类型：期刊文献

英文题名：Application of Response Surface Methodology and Central Composite Rotatable Design for Modeling and Optimization of Catalyst Compositions in Ethanol Synthesis via CO Hydrogenation

作者：Li, Fang[1];Ma, Hongfang[1];Ying, Weiyong[1]

机构：[1]E China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2014

卷号：12

期号：1

外文期刊名：INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING

收录：;EI(收录号：20144200101291);WOS:【SCI-EXPANDED(收录号:WOS:000344851700003)】；

基金：This work is financially supported by state science and technology support program of China (No. 2007BAA08B04)

语种：英文

外文关键词：central composite rotatable design; response surface methodology; CO hydrogenation; ethanol

摘要：A statistical analysis about the effect of catalyst compositions on ethanol synthesis from CO hydrogenation was studied. The effect of Rh loading (0-3 wt.%), Fe loading (2-10 wt.%) and Mn loading (0.5-2.5 wt.%) of RhMnFe/gamma-Al2O3 was studied through response surface methodology (RSM) combined with a central composite rotatable design (CCRD). A linear and a quadratic model were proposed to correlate the three variables to the two responses: CO conversion and ethanol selectivity. The predicted values for ethanol selectivity were in a good agreement with the experimental values, with R-2 of 0.9779. The optimum conditions for achieving the maximum ethanol selectivity (27.8%) while limiting CO conversion at a moderate level (>20%) were as follows: Rh loading of 2.5 wt.%, Mn loading of 2.5 wt.% and Fe loading of 4 wt.%. Two representing catalysts were characterized by XRD, TPR and DRIFTS.