交联型超支化聚酰胺负载钌纳米簇杂化膜的制备及其催化苯加氢反应研究 |
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引用本文: | 李 琳,秦 君,覃丽婷,张爱清.交联型超支化聚酰胺负载钌纳米簇杂化膜的制备及其催化苯加氢反应研究[J].中南民族大学学报(自然科学版),2013,32(4):11-15. |
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作者姓名: | 李 琳 秦 君 覃丽婷 张爱清 |
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作者单位: | 中南民族大学 化学与材料科学学院 催化材料科学国家民委-教育部重点实验室,武汉 430074 |
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基金项目: | 湖北省自然科学基金资助项目(2008CDB036);中央高校专项重点资助项目(CZZ12002) |
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摘 要: | 以4,4’-二氨基二苯醚为A2单体,均苯三甲酸为B3单体,溶液缩聚合成摩尔比为2: 1的A2+B3型超支化聚酰胺,并对其进行改性,将端基转变为乙烯基,再通过热交联反应,加入甲基丙烯酸控制交联度,从而制备出了5种不同交联度的超支化聚酰胺.分别将其作为钌纳米簇的载体,最终得到相应5种不同交联度超支化聚酰胺负载钌杂化膜催化剂,用FT-IR、1H NMR、SEM、XPS等对杂化膜催化剂表征,研究了其在苯加氢反应中的催化性能.结果表明:随着交联度的增加,苯的转化率逐渐升高,环己烯的选择性也呈上升趋势.
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关 键 词: | 超支化聚酰胺 交联 钌纳米簇 负载催化剂 苯加氢 |
Synthesis and Catalytic Properties of Ru Nano-Cluster/Crosslinked Hyperbranched Polyamide Hybrid Membrane for the Hydrogenation of Benzene |
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Abstract: | The A2+B3 hyperbranched polyamide were prepared by the solution polycondensation of 4,4'-oxybisbenzenamine as A2 monomer, trimesic acid as B3 monomer. ODA-type hyperbranched polyamides with amino functional ending groups were modified with acryloyl chloride. Then five kinds of hybrid membranes with different crosslinking degree were obtained by self-crosslinking reaction between the acyloyl and modified polymer. Those were characterized by FT-IR, NMR, SEM and XPS. The experimental results showed that with the increasing of crosslinking degree, the conversion of benzene was gradually increased and the selectivity of cyclohexene was also increased. |
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