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Magnetite Nanoparticles Functionalized with Thermoresponsive Polymers as a Palladium Support for Olefin and Nitroarene Hydrogenation
ACS Omega ( IF 3.7 ) Pub Date : 2023-04-12 , DOI: 10.1021/acsomega.3c00117
Sujittra Paenkaew 1, 2 , Usana Mahanitipong 1 , Metha Rutnakornpituk 1 , Oliver Reiser 2
Affiliation  

A thermoresponsive and recyclable nanomaterial was synthesized by surface modification of magnetite nanoparticles (MNPs) with poly(N-isopropylacrylamide-co-diethylaminoethyl methacrylate) (P(NIPAAm-co-DEAEMA)), having PNIPAAm as a thermoresponsive moiety and PDEAEMA for catalyst binding. Palladium (Pd) nanoparticles were incorporated into this material, and the resulting nanocatalyst was efficient in the hydrogenation of olefins and nitro compounds with turnover frequencies (TOFs) up to 750 h–1. Consistent catalytic activity in 10 consecutive runs was observed when performing the hydrogenation at 45 °C, i.e., above the lower critical solution temperature (LCST) of the copolymer (37 °C), followed by cooling to 15 °C, i.e., below the LCST of the copolymer.

中文翻译:

用热敏聚合物功能化的磁铁矿纳米颗粒作为钯载体用于烯烃和硝基芳烃加氢

通过用聚(N-异丙基丙烯酰胺-co-二乙基氨基乙基甲基丙烯酸酯)(P(NIPAAm- co -DEAEMA))对磁铁矿纳米粒子(MNP)进行表面改性,合成了一种热响应和可回收的纳米材料,具有 PNIPAAm 作为热响应部分和 PDEAEMA 用于催化剂结合. 将钯 (Pd) 纳米颗粒掺入该材料中,由此产生的纳米催化剂在烯烃和硝基化合物的氢化中非常有效,转换频率 (TOF) 高达 750 h –1. 当在 45 °C,即高于共聚物的下临界溶解温度 (LCST) (37 °C),然后冷却至 15 °C,即低于共聚物的LCST。
更新日期:2023-04-12
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