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催化学报  2014 

Ru/ZSM-5催化葡萄糖选择性加氢制备山梨醇

DOI: 10.1016/S1872-2067(14)60077-2, PP. 733-740

Keywords: 加氢,葡萄糖,山梨醇,,ZSM-5

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Abstract:

?采用无有机模板剂一步法制备了Ru/ZSM-5催化剂,利用X射线衍射、N2吸附-脱附、NH3-程序升温脱附和CO2-程序升温脱附、扫描电镜和透射电镜等方法对催化剂进行了表征.考察了反应温度、钌负载量和催化剂重复利用等因素对Ru/ZSM-5上葡萄糖加氢反应性能的影响,并与浸渍法制备的Ru/ZSM-5催化剂进行了对比.结果表明,与传统浸渍法相比,一步法制备的Ru/ZSM-5催化剂钌粒子具有更高的分散性和稳定性.在120℃和4MPa的温和反应条件下,葡萄糖接近完全转化,山梨醇选择性高达99.2%,催化剂可重复利用5次,仍保持较高活性.

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