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要糠醇是一种重要的精细化学品,广泛应用于合成纤维、橡胶和农药等行业。糠醛加氢是工业上制备糠醇的主要方法,主要采用Cu系催化剂。综述了糠醛液相加氢负载型Cu系催化剂和气相加氢负载型Cu系催化剂的研究进展。从技术而言,工业糠醛催化剂以Cu/Si O2为主,碱土金属氧化物对于提高催化剂的选择性有利,尚未找到在技术经济上比Si O2更合适的载体用于工业催化剂的制备。该系催化剂的优点是催化剂不含Cr,其选择性与含Cr催化剂相比还有一定差距,通过在反应中添加碱土金属氧化物,虽然选择性有所提高,但该类催化剂仍需通过添加微量助剂来提高催化剂的选择性。此外,工业催化剂的Cu含量较高,导致催化剂的成本较高,还需要通过提高Cu的分散性,进一步降低催化剂的Cu含量。糠醛中的微量杂质对催化剂的性能有一定影响。
Furfuryl alcohol is an important fine chemical and is widely used in industries such as synthetic fibers, rubber and pesticides. Furfural hydrogenation is the main method for the industrial preparation of furfuryl alcohol, mainly using Cu-based catalysts. In this paper, the progress of the research on hydrofluorocarbon-supported Cu catalysts and gas-phase supported Cu catalysts was reviewed. Technically, the industrial furfural catalyst mainly consists of Cu / Si O2. Alkaline earth metal oxides are favorable for increasing the selectivity of the catalyst, and no more technically-economical carrier than Si O2 has been found for the preparation of commercial catalysts. The catalyst has the advantages that the catalyst does not contain Cr, and the selectivity is still somewhat lower than that of the catalyst containing Cr. By adding the alkaline earth metal oxide to the reaction, the selectivity of the catalyst still needs to be increased by adding Trace additives to improve the catalyst selectivity. In addition, the higher Cu content of the industrial catalyst results in higher cost of the catalyst, and the Cu content of the catalyst needs to be further reduced by increasing the dispersibility of the Cu. Trace impurities in furfural have a certain impact on the performance of the catalyst.