刘天成, 李志倩, 周童, 任国庆, 谭小芳, 常玉, 贾丽娟. MoO3-MgO/ZrO2复合催化剂催化水解HCFC-22的研究[J]. 云南大学学报(自然科学版), 2020, 42(2): 338-344. doi: 10.7540/j.ynu.20190529
引用本文: 刘天成, 李志倩, 周童, 任国庆, 谭小芳, 常玉, 贾丽娟. MoO3-MgO/ZrO2复合催化剂催化水解HCFC-22的研究[J]. 云南大学学报(自然科学版), 2020, 42(2): 338-344. doi: 10.7540/j.ynu.20190529
LIU Tian-cheng, LI Zhi-qian, ZHOU Tong, REN Guo-qing, TAN Xiao-fang, CHANG Yu, JIA Li-juan. Catalytic hydrolysis of HCFC-22 over MoO3-MgO/ZrO2 composite catalyst[J]. Journal of Yunnan University: Natural Sciences Edition, 2020, 42(2): 338-344. DOI: 10.7540/j.ynu.20190529
Citation: LIU Tian-cheng, LI Zhi-qian, ZHOU Tong, REN Guo-qing, TAN Xiao-fang, CHANG Yu, JIA Li-juan. Catalytic hydrolysis of HCFC-22 over MoO3-MgO/ZrO2 composite catalyst[J]. Journal of Yunnan University: Natural Sciences Edition, 2020, 42(2): 338-344. DOI: 10.7540/j.ynu.20190529

MoO3-MgO/ZrO2复合催化剂催化水解HCFC-22的研究

Catalytic hydrolysis of HCFC-22 over MoO3-MgO/ZrO2 composite catalyst

  • 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.

     

    Abstract: 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.

     

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