SO_(4)^(2-)/Fe_(2)O_(3)固体超强酸催化甲醛合成三聚甲醛的研究  

Study on Catalytic Synthesis of Trioxymethylene from Formaldehyde by SO_(4)^(2-)/Fe_(2)O_(3) Catalysts

作　　者：张玉航 陈世军[1] 袁晓云[2] 田永宏 ZHANG Yuhang;CHEN Shijun;YUAN Xiaoyun;TIAN Yonghong(College of Chemistry and Chemical Engineering,Xi’an Shiyou University,Xi’an 710065,China;PetroChina ChangqingPetrochemical Branch Company,Xianyang 712000,China;Mianyang Jiancheng Chemical Co.,Ltd.,Mianyang 621708,China)

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]中国石油天然气股份有限公司长庆石化分公司,陕西咸阳712000 [3]绵阳市建诚化工有限公司,四川绵阳621708

出　　处：《化工技术与开发》2023年第1期1-5,共5页Technology & Development of Chemical Industry

基　　金：国家自然科学基金项目(51974254)。

摘　　要：采用浸渍法,分别以硫酸、硫酸铵和过硫酸铵为活性组分,在不同的焙烧温度下合成了SO_(4)^(2-)/Fe_(2)O_(3),采用FTIR、XRD、SEM、N2吸附-脱附等手段对其进行表征,研究了不同的活性组分和不同的焙烧温度对SO_(4)^(2-)/Fe_(2)O_(3)性能的影响,考察了甲醛制三聚甲醛的反应中固体酸的催化性能。结果表明,以过硫酸铵为活性组分,在550℃下合成的固体酸催化剂,对甲醛制备三聚甲醛的反应表现出更高的催化性能,甲醛的转化率为30.4%,三聚甲醛的选择性为82.57%。Applied sulfuric acid,ammonium sulfate and ammonium persulfate as the active components,SO_(4)^(2-)/Fe_(2)O_(3)was synthesized by impregnation method at different calcination temperatures,and characterized by FTIR,XRD,SEM and N2adsorption-desorption.The effects of different active components and different burned temperatures on the properties of SO_(4)^(2-)/Fe_(2)O_(3)were studied,and the catalytic performance of formaldehyde-to-formaldehyde solid acid was investigated.The results showed that the solid acid catalyst synthesized at 550℃with ammonium persulfate as the active component showed higher catalytic performance on the formaldehyde-to-1,3,5-trioxane reaction,with a conversion rate of 30.4% and a selectivity of 82.57% for formaldehyde.

关 键 词：三聚甲醛 固体酸催化剂 选择性 催化 

分 类 号：O643.361[理学—物理化学]