桂林理工大学学报2011，Vol.31Issue(2)：258-261,4.
NiO - Zrx Ce1-xO2催化剂的制备及其性能
Preparation and Perfomance of NiO -ZrxCe1 -xO2 Catalysts
摘要
Abstract
NiO -ZrxCe1-xO2 complex oxides catalysts are prepared by homogeneous precipitation method with urea as precipitant. XRD, TPR, TPD, and in-situ IR techniques are carried out to characterize the crystalline structures, interaction between NiO and the supports, the acid-base properties of catalysts and the adsorptions of CH3OH and CO2. The results show that Zr0.7Ce0.3O2 sample is solid solution structure, with acid site and base site on the surface. The dissociative adsorptions of CH3OH is observed on the surface of catalysts except the Ni -Zr0.1,Ce0.9O2 sample. Monodentate adsorption of CO2 occurs on the catalysts surface while linear and shearing adsorption of CO2 happen on the metallic sites. Besides, there is horizontal adsorption of CO2 with the synergis-tic function of meteallic sites and surports. The NiO -Zr0.7Ce0.3O2 catalysts demonstrate high catalytic activity and selectivity in the synthesis of dimethyl carbonate from carbon dioxide and methanol.关键词
镍/铈锆复合氧化物/碳酸二甲酯Key words
nickel/ ceria-zirconia complex oxide/ dimethyl carbonate分类
化学化工引用本文复制引用
蔡建信,刘金聚,李凝,陈俭省..NiO - Zrx Ce1-xO2催化剂的制备及其性能[J].桂林理工大学学报,2011,31(2):258-261,4.基金项目
广西自然科学基金项目(桂科自0728217) （桂科自0728217）
广西科学研究与技术开发计划课题(桂科能0842003-36) （桂科能0842003-36）
