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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Palladium supported on chitosan as a recyclable and selective catalyst for the synthesis of 2-phenyl ethanol
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Palladium supported on chitosan as a recyclable and selective catalyst for the synthesis of 2-phenyl ethanol

机译：壳聚糖上负载的钯作为可再生的选择性催化剂，用于合成2-苯基乙醇

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摘要

Two different chitosan supported palladium based catalysts were prepared, wherein dispersed palladium nanoparticles were obtained via chemical reduction supported on chitosan (Pd/CTS) and amine functionalized modified chitosan (Pd/AFCTS). The catalytic activity of the Pd-based catalysts, Pd/CTS and Pd/AFCTS, were assessed in the hydrogenation of styrene oxide to 2-phenyl ethanol. Both Pd-based catalysts enhanced the formation of the desired 2-phenyl ethanol in contrast to a conventional Pd/C catalyst without the assistance of inorganic or organic base. A considerable influence on the conversion and selectivity was observed in the case of Pd/AFCTS, consisting of palladium nanoparticles stabilized and dispersed on amine-functionalized chitosan matrix, affording complete conversion of styrene oxide with 98% selectivity to 2-phenyl ethanol. The catalyst Pd/AFCTS has also been recycled without significant loss of activity and selectivity.
机译：制备了两种不同的壳聚糖负载的钯基催化剂，其中分散的钯纳米粒子是通过化学还原负载在壳聚糖上（Pd / CTS）和胺官能化改性壳聚糖（Pd / AFCTS）获得的。在氧化苯乙烯加氢成2-苯基乙醇中评估了Pd基催化剂Pd / CTS和Pd / AFCTS的催化活性。与没有无机或有机碱辅助的常规Pd / C催化剂相比，两种基于Pd的催化剂均增强了所需的2-苯基乙醇的形成。在Pd / AFCTS的情况下，观察到了对转化率和选择性的显着影响，其中Pd / AFCTS由稳定并分散在胺官能化壳聚糖基质上的钯纳米颗粒组成，提供了98％选择性的氧化苯乙烯完全转化为2-苯基乙醇。催化剂Pd / AFCTS也已被回收利用，而活性和选择性却没有显着降低。

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