磷钼杂多化合物催化剂上异丁烷的选择氧化  

Selective Oxidation of Isobutane over Heteropolycompound Catalysts

作　　者：朱万春[1] 孙方龙[2] 常加贵[2] 李学福[2] 王振旅[1] 王国甲[1] 

机构地区：[1]吉林大学化学学院,吉林长春130023 [2]大庆油田有限责任公司天然气利用研究所,黑龙江大庆163457

出　　处：《石油化工》2003年第8期641-645,共5页Petrochemical Technology

基　　金：大庆油田股份有限公司天然气分公司的资助项目。

摘　　要：采用共沉淀法制备了一系列磷钼杂多化合物催化剂,利用XRD、FTIR等方法对合成的催化剂的结构和性质进行了研究,考察了引入V、Cu、Sb、As的催化剂的异丁烷氧化反应的活性。同时考察了反应温度、空速、烷氧比等反应条件对反应活性的影响。实验表明,催化剂中引入V、Cu、Sb、As提高了异丁烷氧化反应的活性和甲基丙烯醛、甲基丙烯酸的选择性。A series of heteropoly molybdophosphate catalysts for the select ive oxidation of isobutane,having Keggin heteropolyanion structure,were synthesiz ed by using co-precipitation method.Study of structure and properties of catalyst s were carried out with XRD and FTIR.Effect of introduction of VCuSbAs in t o the catalysts on catalytic activity were evaluated and effect of reaction cond itions: temperature,GHSV and molar ratio of alkane to oxygen in feed on react io n activity were investigated.Addition of VCuSbAs enhanced the reaction a c tivity of isobutane oxidation and selectivity to methylacrylic acid (MAA) and me thylacrolein (MAL).

关 键 词：异丁烷 选择氧化 甲基丙烯酸 磷钼杂多化合物 甲基丙烯醛 

分 类 号：O643.3[理学—物理化学]