A novel monolithic Pd catalyst supported on cordierite with graphene coating

A novel monolithic Pd catalyst supported on cordierite with graphene coating
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一种新型整体式石墨烯涂层堇青石负载钯催化剂

DOI:
10.1016/j.catcom.2013.06.018
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发表时间:
2013-10
影响因子:
3.7
通讯作者:
Hongqi Ye
Hongqi Ye
中科院分区:
化学3区
文献类型:
--
作者:
Yuchao Zhu, Linyu Yu, Xuefeng Wang, Yonghua Zhou*,;Hongqi Ye

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在结构化基底上的固定化是开发石墨烯作为催化载体的实际应用的先决条件。在这里,我们报告说,氧化石墨烯(GO)纳米片可以很容易地形成一个稳定的涂层上的堇青石蜂窝基板,而不需要任何稳定剂。FT-IR和1H NMR表征表明GO纳米片可能通过氢键固定在堇青石表面。TEM分析表明,负载在石墨烯/堇青石上的钯颗粒表现出小于5 nm的均匀尺寸,这导致苯乙烯加氢活性比负载在堇青石上的高4倍。
Immobilization on a structured substrate is a prerequisite for exploiting practical applications for graphene as a catalytic support. Here we report that graphene oxide (GO) nanosheets can readily form a stable coating on a cordierite honeycomb substrate without any need of stabilizers. FT-IR and1H NMR characterization revealed that GO nanosheets were probably immobilized on the cordierite surface by hydrogen bonding. TEM analysis indicated that palladium particles loaded on the graphene/cordierite exhibited a uniform size of less than 5 nm, which led to 4 times higher activity for styrene hydrogenation than that loaded on the cordierite.
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