天然气化工（C1化学与化工）Issue(3)：26-31,6.
沉淀剂对浆态床合成甲醇铜基催化剂性能的影响
Effect of precipitants on properties of copper-based catalysts for methanol synthesis in slurry reactor
摘要
Abstract
Five CuO/ZnO/Al2O3 catalysts used for methanol synthesis were prepared by co-precipitation method with Na2CO3, CO (NH2)2, NaHCO3, C2H7NO and NaOH as precipitants, respectively. The effects of precipitants on the phase composition of the catalyst precursors were investigated, and the corresponding catalytic performance of the prepared catalysts were evaluated in a slurry bed reactor. The results showed that (Cu,Zn)2CO3(OH)2 and (Cu,Zn)5(CO3)2(OH)6 were active components in catalyst precursors which were prepared by precipitants containing CO32-. (Cu,Zn)2CO3(OH)2 phase was easier than (Cu,Zn)5(CO3)2(OH)6 to be formed, and both of them could be decomposed to form CuO-ZnO solid solution in which the synergistic effect of copper and zinc was high, resulting in high catalytic performance. The dispersion between CuO and ZnO in the catalysts prepared by precipitants containing OH-was poor, resulting their bad catalytic performance. TG-DTG results showed that the catalyst prepared by Na2CO3 as precipitant had the highest content of (Cu,Zn)2CO3(OH)2 and (Cu,Zn)5(CO3)2(OH)6 in the five catalyst precursors, which made it had the best catalytic performance:the CO conversion was 40.45%;STY for methanol was 256.8g·kg-1·h-1;and the deactivation rate was 0.77%/d.关键词
甲醇合成/铜基催化剂/制备/沉淀剂/浆态床Key words
methanol synthesis/copper-based catalyst/preparation/precipitator/slurry bed reactor分类
化学化工引用本文复制引用
王海龙,马凤云,莫文龙,王晔,李忠,肖艳..沉淀剂对浆态床合成甲醇铜基催化剂性能的影响[J].天然气化工（C1化学与化工）,2015,(3):26-31,6.基金项目
新疆维吾尔自治区科技支疆项目（201291102），乌鲁木齐市科学技术计划项目 （）
