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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Palladium nanoparticles incorporated within sulfonic acid-functionalized MIL-101(Cr) for efficient catalytic conversion of vanillin
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Palladium nanoparticles incorporated within sulfonic acid-functionalized MIL-101(Cr) for efficient catalytic conversion of vanillin

机译：磺酸官能化的MIL-101（Cr）中掺入的钯纳米颗粒可有效催化转化香草醛

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摘要

We report a highly efficient bifunctional catalyst, Pd/SO3H-MIL-101(Cr), consisting of Pd nanoparticles immobilized on a mesoporous sulfonic acid-functionalized metal-organic framework SO3H-MIL-101(Cr), which exhibits high catalytic performance in promoting biomass refining. The use of SO3H-MIL-101(Cr) as a support renders highly dispersed Pd nanoparticles with uniform size distribution, sufficient reactant contact in aqueous media, and rapid activation of the reactants induced by the Bronsted acid coordination sites (sulfonic acid groups from SO3H-MIL-101(Cr)). Thus, the 2.0 wt% Pd/SO3H-MIL-101(Cr) catalyst exhibits novel synergy in the hydrodeoxygenation of vanillin (a typical model compound of lignin) at low H-2 pressure under mild conditions in aqueous media. Excellent catalytic results (100% conversion of vanillin with exclusive selectivity for the 2-methoxy-4-methylphenol product) could be achieved, and no loss of catalytic activity and selectivity was observed after seven recycles in succession.
机译：我们报告了一种高效的双功能催化剂，Pd / SO3H-MIL-101（Cr），由固定在介孔磺酸功能化的金属有机骨架SO3H-MIL-101（Cr）上的Pd纳米颗粒组成，该催化剂在H2O3中表现出高催化性能。促进生物质精炼。使用SO3H-MIL-101（Cr）作为载体可得到高度分散的Pd纳米颗粒，具有均匀的尺寸分布，在水介质中充分的反应物接触以及由布朗斯台德酸配位点（SO3H中的磺酸基团）诱导的反应物快速活化-MIL-101（Cr））。因此，2.0 wt％Pd / SO3H-MIL-101（Cr）催化剂在温和的条件下在水性介质中在低H-2压力下香兰素（木质素的典型模型化合物）加氢脱氧中显示出新的协同作用。可以获得优异的催化效果（香草醛100％转化，对2-甲氧基-4-甲基苯酚产物具有唯一选择性），并且连续七个循环后未观察到催化活性和选择性的损失。

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