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1,3-丙二醇是一种合成新型高分子材料的单体。化学合成1,3-丙二醇(PDO)的方法主要为以丙烯醛(HPA)为原料的丙烯醛水合加氢法和以环氧乙烷为原料的羰基合成法(OXO)。这两种方法中均采用3-羟基丙醛加氢制1,3-丙二醇步骤。本文综述了雷基镍、以金属氧化物为载体的载镍催化剂和以贵金属Pt、Ru等负载到金属氧化物的加氢催化剂的研制、组成并比较了反应条件、反应结果;描述了应用不同催化剂体系及反应条件采用两段或多段加氢以降低PDO产品中羰基含量及加氢前净化加氢原料HPA以提高催化剂寿命的方法。
1,3-Propanediol is a monomer for the synthesis of novel polymeric materials. The main methods for the chemical synthesis of 1,3-propanediol (PDO) are acrolein hydroprocessing with acrolein (HPA) as raw material and oxo process (OXO) with ethylene oxide as raw material. Both of these methods use 3-hydroxypropanal hydrogenation to 1,3-propanediol. In this paper, the preparation of nickel-based nickel, supported nickel supported on metal oxide and hydrogenation supported on noble metal Pt, Ru and other metal oxides were reviewed. The reaction conditions and the reaction results were compared and described. Catalyst System and Reaction Conditions Two or more stages of hydrogenation are used to reduce the carbonyl content in the PDO product and to purify the hydrogenated feedstock HPA prior to hydrogenation to increase the catalyst life.