石油炼制与化工

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纳米Cu(OH)2/SiO2催化剂的制备条件对糠醛加氢反应的影响

廉金超 刘丹 杨玉莲 桂建舟   

  1. 辽宁石油化工大学 辽宁石油化工大学 辽宁石油化工大学 辽宁石油化工大学
  • 收稿日期:2009-08-18 修回日期:1900-01-01 出版日期:2010-02-12 发布日期:2010-02-12
  • 通讯作者: 桂建舟

EFFECT OF NANO-Cu(OH)2/SiO2 CATALYST PREPARATION CONDITIONS ON ITS CATALYTIC PERFORMANCE OF FURFURAL HYDROGENATION

  

  • Received:2009-08-18 Revised:1900-01-01 Online:2010-02-12 Published:2010-02-12

摘要: 通过共沉淀方法制备了用于糠醛加氢制糠醇的纳米Cu(OH)2/SiO2催化剂,并运用XRD和BET等手段对制备的催化剂进行了表征;考察了溶液的滴加方式、碱液浓度、反应温度及陈化时间等因素对催化剂催化效果的影响。结果表明,用并加法进行滴加,在碱液浓度2.8mol/L、陈化时间1h、制备温度30℃和搅拌速率400r/min的条件下,所制得的催化剂表现出较高的加氢性能,糠醛转化率为97%,糠醇选择性达96.6%。

关键词: 纳米氢氧化铜, 共沉淀, 糠醛

Abstract: The nano-Cu(OH)2/SiO2 catalysts for furfural hydrogenation were prepared through co-precipitation method and characterized by XRD and BET techniques. The effect of catalyst preparation conditions, such as solutions adding sequence, alkali concentration, reaction temperature and aging time on its catalytic performance was investigated. Test results showed that under the optimum conditions of co-adding both solutions, an alkali concentration of 2.8 mol/L, an aging time of 1 h, a preparation temperature of 30 ℃ and a stirring speed of 400 r/min, the prepared catalyst exhibited good catalytic performance for furfural hydrogenation, the conversion of furfural and the selectivity of furfuryl alcohol was 97% and 96.6%, respectively.

Key words: Nano-Cu(OH)2, Coprecipitation, Furfural