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马来酸酐(MA)是重要而又被广泛使用的化工原料之一。最早由苯氧化制得。随着石油工业的友展,C_4烃(包括丁烯、丁二烯、丁烷等)有了充足的来源,因而自六十年代以来、由C_4烃转化为马来酸酐就成为人们日益关注的课题。本文简要介绍了由C_4烃转化为马来酸酐的机理;着重介绍了把C_4烃选择氧化为马来酸酐的钒—磷氧化物(VPO)催化剂的制备方法,以及还原剂、溶剂、V:P比、活化方法等因素对催化剂结构和性能的影响;同时,还介绍了加入Zn、U、Ti、Li等金属元素后的具有助催化作用的VPO催化剂。
Maleic anhydride (MA) is one of the important and widely used chemical raw materials. The earliest from benzene oxidation system. With the development of the oil industry, C 4 hydrocarbons (including butylene, butadiene, butane and so on) have sufficient sources, so the conversion of C 4 hydrocarbons to maleic anhydride has been attracting increasing attention since the 1960s Question. This paper briefly introduces the mechanism of conversion of C_4 hydrocarbons to maleic anhydride. The preparation of vanadium-phosphorus oxide (VPO) catalyst for selective oxidation of C_4 hydrocarbons to maleic anhydride is introduced. The reductant, solvent, V: P Ratio, activation method and other factors on the structure and properties of the catalyst; the same time, also introduced the addition of Zn, U, Ti, Li and other metal elements with VPO catalyst promoter.