水合氧化锆负载磷钼酸的合成、表征及催化活性
Synthesis, characterization, and catalytic activity of phosphomolybdic acid supported on hydrous zirconia.
作者信息
Mallik Sujata, Dash Suswati S, Parida Kulamani M, Mohapatra B K
机构信息
Regional Research Laboratory (CSIR), EM & IC Department, Bhubaneswar 751013, Orissa, India.
出版信息
J Colloid Interface Sci. 2006 Aug 1;300(1):237-43. doi: 10.1016/j.jcis.2006.03.047. Epub 2006 Mar 27.
A series of ecofriendly solid acid catalyst was synthesized by phosphomolybdic acid impregnated on hydrous zirconia (ZPMA) by an incipient wetness impregnation technique. The support and the resulting catalysts were characterized by X-ray diffraction, FTIR, EPMA, BET surface area, acid sites, etc. These studies indicate that the phosphomolybdic acid keeps its Keggin-type structure unaltered up to 500 degrees C. Catalytic activities of the material were evaluated for the esterification of acetic acid reaction. The 12 wt% of phosphomolybdic acid supported on hydrous zirconia shows highest surface area, acid sites and gives about 86% conversion with 100% selectivity of n-butyl acetate.
通过初湿浸渍法将磷钼酸负载在水合氧化锆（ZPMA）上合成了一系列环境友好型固体酸催化剂。采用X射线衍射、傅里叶变换红外光谱、电子探针微分析、比表面积测定、酸位点测定等方法对载体及所得催化剂进行了表征。这些研究表明，磷钼酸在500℃以下保持其Keggin型结构不变。对该材料在乙酸酯化反应中的催化活性进行了评价。负载在水合氧化锆上的12 wt%磷钼酸具有最高的比表面积和酸位点，乙酸转化率约为86%，乙酸正丁酯选择性为100%。
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