Mild synthesis of mesoporous silica supported ruthenium nanoparticles as heterogeneous catalysts in oxidative Wittig coupling reactions

Adela I. Carrillo; Luciana C. Schmidt; M. Luisa Marin

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Mild synthesis of mesoporous silica supported ruthenium nanoparticles as heterogeneous catalysts in oxidative Wittig coupling reactions

机译：介孔二氧化硅的轻度合成支持唯一纳米颗粒作为氧化性维蒂格偶联反应中的异质催化剂

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A new efficient approach for the in situ synthesis of anchored ruthenium nanoparticles (RuNP) in three different kinds of mesoporous silica materials, MCM-41, SBA-15 and HMS, has been developed. Solids have been synthesized under very mild conditions from RuCl3·H2O salt reduced in one hour at room temperature in the mesoporous silicas previously grafted with aminopropyltriethoxysilane (APTES). Well-dispersed ruthenium nanoparticles, with an average size of 3 nm, anchored into the silica network by the APTES were obtained. These materials, with a molar ratio of Si/Ru = 40, were found to be catalytically active and selective in the alcohol oxidation-Wittig olefination. Interestingly, while the reaction occurs from the alcohol, control experiments suggest that the aldehyde (the common Wittig substrate) is not involved.

机译：已经开发了一种新的有效方法，用于在三种不同类型的介孔二氧化硅材料分别MCM-41，SBA-15和HMS的原位合成锚定的钌纳米颗粒（RUNP）。在室温下，在室温下，先前用氨基丙基三乙氧基硅烷（APTES）接枝的中孔硅（APTES），在室温下，在室温下，在一个小时内降低了一小时的Rucl3·H2O盐的条件下合成了固体。获得平均大小为3 nm的鲜散分散的弦丁纳米颗粒被APTES固定在硅网络中。这些材料的摩尔比为Si/ru = 40，在酒精氧化 - 焊接烯烃中具有催化活性和选择性。有趣的是，虽然反应来自酒精，但对照实验表明醛（常见的wittig底物）不涉及。

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来源
《Catalysis science & technology》 |2014年第2期|435-440|共6页
作者
Adela I. Carrillo; Luciana C. Schmidt; M. Luisa Marin;
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作者单位

Department of Chemistry and Centre for Catalysis Research and Innovation, University of Ottawa, 10 Marie Curie, Ottawa, KIN 6N5, Canada.;

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正文语种英语
中图分类汉语教学;
关键词
Nanoparticles; mesoporous materials; REACTIONsynthesisRutheniumheterogeneous catalyst;

机译：纳米颗粒;介孔材料;反应合成的芬属二烯催化剂;

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Mild synthesis of mesoporous silica supported ruthenium nanoparticles as heterogeneous catalysts in oxidative Wittig coupling reactions

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