摘要
采用金属Na对SiO2进行预处理,之后用浸渍法制备Cu-ZnO/Na-SiO2催化剂。研究了Na的加入方式和含量对催化剂的结构和性能的影响,采用XRD和TPR等测试技术对催化剂进行表征。结果表明,与未经Na预处理SiO2制备的Cu-ZnO-Na/SiO2催化剂对比,Na的加入提高了Cu物种的分散度,并增强了Cu物种与载体的相互作用。通过调节Na的加入量可获得性能较佳的仲丁醇脱氢催化剂。
The catalyst support SiO2 was firstly pretreated with different amounts of sodium nitrate solution followed by impregnation in copper and zinc nitrates solution.The effects of the preparation method and contents of sodium on the structures and performances of Cu-ZnO/Na-SiO2 catalysts were investigated.The catalytic activities of these catalysts were evaluated using the dehydrogenation of 2-butanol and the selectivity for methyl ethyl ketone as probes.These catalysts were characterized by means of XRD and TPR.The results indicated that sodium-pretreatment can improve the dispersion of metallic copper and the interaction between the copper species and the support.
出处
《应用化学》
CAS
CSCD
北大核心
2011年第12期1397-1401,共5页
Chinese Journal of Applied Chemistry
