张一颖,闫宇强,曹发海

• 1:华东理工大学大型工业反应器工程教育部工程研究中心

摘要(Abstract)：

无机介孔氧化硅材料具有规整的孔道结构、连续可调的孔径、良好的稳定性等优点,可作为催化反应的微囊反应器。今以无机介孔二氧化硅微球为微囊反应器,利用"ship-in-a-bottle"策略,将均相催化剂封装在介孔SiO2微球中,采用SEM、BET、TEM、FT-IR等手段进行表征,并应用在苯乙酮的不对称氢转移反应中。在60℃下反应6h,苯乙酮转化率和苯乙醇的对映体选择性最高分别达到52.4%和95.5%,且重复使用5次后,催化剂仍保持较高活性。以甲酸钠为氢源,考察了反应温度、反应时间、反应物的加入量对底物转化率和产物对映体选择性的影响。研究结果表明,将均相铑催化剂封装在二氧化硅微囊反应器中,在获得高转化率和对映体选择性的同时,可以提高催化剂的重复利用率,降低生产成本,符合绿色化学的要求。

关键词(KeyWords)： 二氧化硅;微囊反应器;瓶中存船;不对称氢转移;手性α-苯乙醇

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张一颖,闫宇强,曹发海

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