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基于锚定在分级沸石上的N-杂环卡宾的混合催化剂。

Hybrid catalysts based on N-heterocyclic carbene anchored on hierarchical zeolites.

作者信息

Gianotti Enrica, Miletto Ivana, Ivaldi Chiara, Paul Geo, Marchese Leonardo, Meazza Marta, Rios Ramon, Raja Robert

机构信息

Department of Science and Technological Innovation, Università del Piemonte Orientale V. T. Michel 11 I-15121 Alessandria Italy

School of Chemistry, University of Southampton University Road Southampton SO17 1BJ UK.

出版信息

RSC Adv. 2019 Oct 31;9(61):35336-35344. doi: 10.1039/c9ra07516j.

DOI:10.1039/c9ra07516j
PMID:35528109
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9074450/
Abstract

Hybrid materials have been synthesized by anchoring a N-heterocyclic carbene (NHC) precursor on different inorganic zeolitic supports with hierarchical porosity, in particular hierarchical HZSM-5 and SAPO-5. Hierarchical porous inorganic supports have been obtained both by top-down and bottom-up approaches and the role of hierarchical porosity has been evaluated. A detailed physico-chemical characterization has been performed on the organic-inorganic hybrids using a multi-technique approach (XRD, volumetric and thermogravimetric analysis, ssNMR and FTIR) in order to establish a structure-property relationship. The hybrids were tested in the benzoin condensation reaction of furfural, a base catalyzed reaction.

摘要

通过将N-杂环卡宾（NHC）前体锚定在具有分级孔隙率的不同无机沸石载体上，特别是分级HZSM-5和SAPO-5，合成了杂化材料。通过自上而下和自下而上的方法都获得了分级多孔无机载体，并评估了分级孔隙率的作用。使用多技术方法（XRD、体积分析和热重分析、固体核磁共振和傅里叶变换红外光谱）对有机-无机杂化物进行了详细的物理化学表征，以建立结构-性能关系。这些杂化物在糠醛的安息香缩合反应（一种碱催化反应）中进行了测试。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/5c1ac1b75f6c/c9ra07516j-s4.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/1557aece65de/c9ra07516j-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/25ba5c07229d/c9ra07516j-s2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/69eda959b816/c9ra07516j-f9.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/5c1ac1b75f6c/c9ra07516j-s4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/059184f12340/c9ra07516j-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/463c5ffc28e5/c9ra07516j-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/72d229ef17b6/c9ra07516j-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/2635c355450d/c9ra07516j-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/1db39e18c138/c9ra07516j-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/082983706d58/c9ra07516j-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/d67738e91b39/c9ra07516j-f6.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/87ab24b47317/c9ra07516j-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/1557aece65de/c9ra07516j-f8.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/25ba5c07229d/c9ra07516j-s2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/69eda959b816/c9ra07516j-f9.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/fd58ac0465cb/c9ra07516j-s3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/bc3c/9074450/5c1ac1b75f6c/c9ra07516j-s4.jpg

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