【摘要】 介绍了用草酸盐胶态共沉淀法制备纳米Cu/ZnO/Al2 O3 催化剂过程中焙烧条件对催化剂结构性质及其二氧化碳加氢制甲醇催化活性的影响 .结合多种现代表征手段 ,研究了焙烧气氛、焙烧温度和焙烧过程不同升温速率对催化剂晶粒大小、结构及各组分间相互作用的影响 .在此基础上 ,将该催化剂用于二氧化碳加氢制甲醇反应 .催化反应结果表明 ,纳米金属铜催化剂显示出优良的二氧化碳加氢反应性能 ,焙烧条件对催化剂性质影响显著 .更多还原

【Abstract】 The effects of various calcination conditions on the structure properties and catalytic performance in the reaction of hydrogenation of CO 2 to form methanol of the nanosized Cu/ZnO/Al 2O 3 catalysts prepared by gel oxalate co precipitation method were investigated. Combining with several modern characterization methods,the influence of calcination gaseous environment,calcination temperature and different temping rate during calcination process to the crystal size,structure and interaction among components of the catalysts were studied. The catalysts were then used in methanol synthesis from CO 2 hydrogenation. The results show that the nanosized metallic copper catalysts show excellent catalytic performance for the hydrogenation of CO 2 and calcinations conditions exhibit notable influence on the catalytic performance.更多还原