Noraini Hamzah, Mohd Ambar Yarmo
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引用次数: 1

摘要

以RuCl3为前驱体,采用浸渍法制备了一系列负载钌的多相催化剂。研究了负载材料(膨润土、TiO2、Al2O3和SiO2)对Ru催化剂催化甘油氢解活性的影响,反应条件为150℃,初始氢压力为20 bar,反应时间为7小时,甘油浓度为20%(wt)。实验发现,载体材料的种类对甘油氢解的活性和选择性有显著影响。Ru催化剂活性的强弱顺序为Ru/膨润土> Ru/Al2O3Ru/TiO2 > Ru/SiO2。研究表明,膨润土负载的Ru催化剂活性最高,甘油转化率达62.5%。所有催化剂对1,2-丙二醇的选择性均在80%以上。采用BET、XPS、FESEM-EDX和TEM对催化剂进行表征,获得催化剂的理化性质。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Kesan bahan penyokong terhadap aktiviti pemangkin nano ruthenium dalam hidrogenolisis gliserol
A series of heterogenous catalysts based on supported ruthenium were prepared from RuCl3 precusor by impregnation method. The effect of support materials (bentonite, TiO2, Al2O3 and SiO2) on catalytic activity of Ru catalyst for hydrogenolysis of glycerol were investigated under mild reaction condition of 150C and 20 bar initial hydrogen pressure for 7 hours reaction time and glycerol concentration was 20%(wt). It was found that the type of support material have significant effects on the activity and selectivity of glycerol hydrogenolysis. The order of Ru catalyst activity was Ru/bentonite > Ru/Al2O3  Ru/TiO2 > Ru/SiO2. This study showed that bentonite supported Ru catalyst was the most active with glycerol conversion reaching 62.5% compared to other supports. All the tested catalyst exhibited high selectivity to 1,2-propanediol with more than 80%. Characterization of the catalysts was carried out using BET, XPS, FESEM-EDX and TEM to obtain the physicochemical properties of the catalysts.
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