太原理工大学学报2017，Vol.48Issue(1)：30-35,6.DOI:10.16355/j.cnki.issn1007-9432tyut.2017.01.005
酸改性蒙脱土负载杂多酸的制备及其催化乙醇制乙烯
The Preparation of Acid-Modified Montmorillonite Supported Heteropoly Acid and Its Catalytic Properties for Ethanol Dehydration to Ethylene
摘要
Abstract
In this paper ,a series of catalysts were prepared by impregnation loading of differ‐ent amounts of phosphomolybdic acid and phosphotungstic acid on the montmorillonite modified by 25% sulfuric acid as carrier .With XRD ,nitrogen adsorption‐desorption ,and FT‐IR character‐izations ,the structure of the catalysts was systematically analyzed ,and the catalytic properties of the catalysts were studied in ethanol dehydration reaction to ethylene .The results show that :when WHSV was 2.5 h-1 ,the concentration of ethanol was 30% ,the catalyst loaded with 10%of phosphotungstic acid showed excellent catalytic performance at 350 ℃ ,wherein the selectivity of ethylene was 99.9% and the conversion of ethanol was 98.9% .The catalytic properties of sup‐ported phosphotungstic acid was more stable than supported phosphomolybdic acid ,when the load amount increased to a certain value ,the catalytic performance did not increase with the a‐mount of loading further .关键词
蒙脱土/酸处理/磷钼酸/磷钨酸/乙醇脱水制乙烯Key words
montmorillonite/acid treatment/phosphomolybdic acid/phosphotungstic acid/eth-anol dehydration to ethylene分类
化学化工引用本文复制引用
李宝茹,李政,安霞,吴旭,谢鲜梅..酸改性蒙脱土负载杂多酸的制备及其催化乙醇制乙烯[J].太原理工大学学报,2017,48(1):30-35,6.基金项目
国家自然科学基金资助项目原位法构筑类水滑石／蒙脱石交互积层型复合催化材料的研究 （）
