Y2O3修饰Ni/SiO2催化剂在甲烷部分氧化制合成气反应中的催化性能及稳定性  

Catalytic Behaviors and Stability of Y_2O_3-Modified Ni/SiO_2 for Partial Oxidation of Methane into Synthesis Gas

作　　者：王雅莉[1] 李琪[1] 翁维正[1] 夏文生[1] 万惠霖[1] 

机构地区：[1]厦门大学化学化工学院,固体表面物理化学国家重点实验室,醇醚酯化工清洁生产国家工程实验室,福建省理论计算化学重点实验室,福建厦门361005

出　　处：《物理化学学报》2016年第11期2776-2784,共9页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(21373169);教育部创新团队项目(IRT1036)资助~~

摘　　要：采用常规浸渍法制备Y_2O_3修饰的Ni/SiO_2催化剂,并考察其催化甲烷部分氧化(POM)制合成气反应性能。结果表明,Y_2O_3的引入减小了金属Ni的粒径,有效提高了Ni在载体表面的分散性,增强了金属Ni与载体SiO_2间的相互作用,从而使催化剂的抗烧结、抗积碳能力,以及催化剂的POM反应性能得以改善。A series of Y2O3-modified Ni/SiO2 catalysts were synthesized by a conventional impregnation method. Catalytic performances for the partial oxidation of methane （POM） to synthesis gas were investigated. The addition of Y2O3 promotes a decrease in size of Ni particles supported on silica, increased the dispersion of Ni particles, and enhanced the interaction between Ni and silica. These properties gave the catalysts increased anti-sintering and resistance to carbon deposits. The catalytic behaviors of the Ni-based catalysts for POM were significantly improved when Y2O3 was introduced.

关 键 词：甲烷部分氧化 NI SIO2 Y2O3 稳定性 

分 类 号：O643.36[理学—物理化学]