磷酸氢铁铵的低热固相合成及其对乙酸丁酯的催化作用  

Synthesis of ammonium ferric hydrogen phosphate by solid state reaction at low temperature and its catalysis to butyl acetate

作　　者：廖森[1] 王天顺[1] 陈霞[1] 吴文伟[1] 吴昆[1] 

机构地区：[1]广西大学化学化工学院,广西南宁530004

出　　处：《无机盐工业》2008年第2期20-22,共3页Inorganic Chemicals Industry

基　　金：教育部科研重点项目(205120);广西科学基金项目(桂科基0575006);广西测试基金项目(2006年)

摘　　要：以硫酸亚铁和磷酸二氢铵为原料,以聚乙二醇-400(PEG-400)为表面活性剂,经低热固相反应合成得到磷酸氢铁铵,经XRD分析表征证实了产物的分子式为(NH4)Fe(HPO4)2。用磷酸氢铁铵为催化剂进行了乙酸丁酯的合成试验。试验中应用了均匀设计试验法及数据挖掘技术,在数据挖掘成果的指导下进行了试验,考察了催化剂用量、醇酸物质的量比、反应时间及催化剂重复使用次数等因素对收率的影响,获得了催化反应的最佳工艺条件。催化试验结果表明,磷酸氢铁铵具有良好的催化活性,在最优工艺条件下,酯转化率可达到96.4%。研究结果表明,低热固相法合成磷酸氢铁铵不仅合成工艺简单、可行,而且合成的磷酸氢铁铵作为乙酸丁酯的催化剂时具有良好的催化活性,故其具有良好的工业应用潜质。Ammonium ferric hydrogen phosphate was prepared via solid state reaction at room temperature with ferrous sulfate （FeSO4 · 7H2O） and ammonium dihydrogen phosphate （NHaH2PO4· 12H2O） as raw materials and polyethylene glycol （ PEG - 400） as surfactant. The analysis and characterization results of XRD indicated that the molecular formula of the product was （ NH4 ） Fe（ HPO4 ） 2. Synthesis experiments of butyl acetate were done with ammonium ferric hydrogen phos- phate as catalyzer. The uniform experimental design as well as data mining technique were applied in the experiments. Under the direction of data mining results, experiments were made to investigate the effect of the test factors, such as amount of catalyzer,amount -of- substance ratio of alcohol to acid, reaction time and repeated using times of catalyzer etc. on yield of product and optimal conditions of catalytic reaction was obtained. The results of catalytic tests showed that ammonium ferric hydrogen phosphate had good catalysis activity, and the reaction yield reached 96.4% at the optimal conditions. The work of this paper showed that ammonium ferric hydrogen phosphate had good potential for industry application for it was not only feasible and simple in synthesis technics, but also had good catalysis activity for synthesis of butyl acetate.

关 键 词：磷酸氢铁铵 乙酸丁酯 固相反应 数据挖掘技术 

分 类 号：TQ126.35[化学工程—无机化工]