MoO_(3)-MgO/ZrO_(2)复合催化剂催化水解HCFC-22的研究  

Catalytic hydrolysis of HCFC-22 over MoO_(3)-MgO/ZrO_(2)composite catalyst

作　　者：刘天成 李志倩 周童 任国庆 谭小芳 常玉 贾丽娟 LIU Tian-cheng;LI Zhi-qian;ZHOU Tong;REN Guo-qing;TAN Xiao-fang;CHANG Yu;JIA Li-juan(College of Chemistry and Environment,Yunnan Minzu University,Joint Research Centre Centre for International Cross-border Ethnic Regions Biomass Clean Utilization in Yunnan,Kunming 650500,China;Yunnan Technician College,Kunming 650500,China)

机构地区：[1]云南民族大学化学与环境学院,云南省跨境民族地区生物质资源清洁利用国际联合研究中心,云南昆明650500 [2]云南技师学院,云南昆明650500

出　　处：《云南大学学报（自然科学版）》2020年第2期338-344,共7页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金(51568068);云南省级环境工程虚拟仿真实验教学项目.

摘　　要：通过共沉淀和过饱和浸渍法制备了MoO3-MgO/ZrO2三元复合催化剂,从MoO3-MgO/ZrO2催化剂的使用寿命考察了其催化水解HCFC-22的性能.同时考察了催化剂制备的镁锆摩尔比、焙烧温度、焙烧时间、催化水解温度、反应时间等条件对HCFC-22水解率的影响,结果表明镁锆摩尔比为3∶10,在400℃焙烧3 h的催化剂在催化水解温度为350℃时对HCFC-22的水解率可达98.88%,同时得出MoO3-MgO/ZrO2三元复合催化剂在连续反应42 h后水解率保持在60%以上.主要水解产物为HF、HCl和CO2.The MoO3-MgO/ZrO2 ternary composite catalyst was prepared by co-precipitation and supersaturation impregnation method. The performance of the catalytic hydrolysis of HCFC-22 was investigated from the service life of MoO3-MgO/ZrO2 catalyst and the effects of molar ratio of Mg and Zr, calcination temperature, calcination time and catalytic hydrolysis temperature on the hydrolysis rate of HCFC-22 were also investigated. The results showed that the hydrolysis rate of HCFC-22 could reach 98.88% at a molar ratio of Mg and Zr of 3∶10, a calcination temperature of 400 ℃, a calcination time of 3 h and a hydrolysis temperature of 350 ℃.The hydrolysis rate of HCFC-22 was maintained above 60% after 42 h of continuous reaction of MoO3-MgO/ZrO2 ternary composite catalyst. The main hydrolysis products were HF, HCl and CO2.

关 键 词：MoO_(3)-MgO/ZrO_(2) HCFC-22 催化水解 三元复合催化剂 

分 类 号：TQ139.2[化学工程—无机化工]