钙助剂对钴钼基高温变换催化剂性能的影响  

The Effect of Calcium Additive on the Performance of High Temperature Co-Mo Based WGS Catalyst

作　　者：邓甜音 田大勇 蒋明哲 赵华博 孙守理 

机构地区：[1]北京低碳清洁能源研究所,北京102209

出　　处：《化肥设计》2017年第3期10-12,共3页Chemical Fertilizer Design

基　　金：神华集团项目基金(ST930015SH06)资助

摘　　要：研究了不同的钙助剂和氧化钙含量对催化剂变换性能的影响。结果表明:不同的钙助剂对催化剂活性的促进作用差别较大,可能与碱性氧化钙和钼酸钙的形成相关。碱性氧化钙对变换活性具有促进作用,而钼酸钙的形成却不利于变换活性。氧化钙含量影响催化剂的活性和甲烷选择性,催化剂的活性随氧化钙含量的增加呈现先增大后减小的趋势,而甲烷选择性则随着氧化钙含量的增加而略有降低。以硝酸钙为助剂制备的含w(CaO)1.5%的催化剂具有比工业催化剂更高的活性和抗水合稳定性。The effect of different calcium additives and calcium oxide content on the catalyst performance of water gas shift reaction is studied.The results indicate that the promotion effect of different calcium additives on the catalyst activity is quite different,and this is closely related to the formation of calcium oxide and calcium aluminate.The catalyst activity can be promoted by the calcium oxide while restrained by the formation of calcium aluminate.Calcium oxides content influences the catalyst activity and methanes selectivity.With the increase of calcium oxide content,the catalyst activity firstly increases and then decreases,while the methanes selectivity slightly decreases.The catalyst prepared by calcium nitrate with 1.5% CaO presents better activity and hydration-tolerant than industrial catalyst.

关 键 词：高温变换催化剂 活性 选择性 稳定性 抗水合 

分 类 号：O643[理学—物理化学]