Bifunctional hybrid organosiliceous catalysts for aldol condensation – hydrogenation tandem reactions of furfural in continuous-flow reactor

被引：0
作者：
Hernández-Soto M.C. [1 ]
Erigoni A. [1 ]
Segarra C. [1 ]
Rey F. [1 ]
Díaz U. [1 ]
Gianotti E. [2 ]
Miletto I. [3 ]
Pera-Titus M. [4 ,5 ]
机构：
[1] Instituto de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas, Avenida de los Naranjos s/n, Valencia
[2] Department for the Sustainable Development and Ecological Transition, Università del Piemonte Orientale, Piazza Sant'Eusebio 5, Vercelli
[3] Department of Science and Technological Innovation, Università del Piemonte Orientale, V. T. Michel 11, Alessandria
[4] Eco-Efficient Products and Processes Laboratory (E2P2L), UMI 3464 CNRS – Solvay, 3966 Jin Du Road, Xin Zhuang Ind. Zone, Shanghai
[5] Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff
来源：
Applied Catalysis A: General | 2022年 / 643卷
基金：
欧盟地平线“2020”;
关键词：
Aldol Condensation; Basic hybrid catalysts; Bifunctional Organosilicas; Furfural; Hydrogenation;
D O I：
10.1016/j.apcata.2022.118710
中图分类号：
学科分类号：
摘要：
A series of organic-inorganic hybrid bifunctional organosiliceous catalysts with accessible pendant amine groups as single basic sites (such as propylamine, diethylamine, pyrrolidine) and Pd nanoparticles was prepared from suitable synthesis processes. Pd/MCM-41 silica decorated with propylamine groups was highly active and selective for the single-reactor tandem aldol condensation/crotonization reaction between furfural with methyl isobutyl ketone, followed by hydrogenation, to access renewable biosolvent and biofuel precursors in the branched alkane range at mild temperature (80–100 ºC). The catalyst was characterized in detail using XRD, C and N elemental analysis, ICP-OES, TGA/DTA, HR-TEM, N2 adsorption/desorption at 77 K, solid-state 13C and 29Si MAS NMR and FT-IR spectroscopy CO2 as acid probe. The catalyst was robust when operated in a dual fixed-bed reactor achieving steady 20 % furfural conversion for 12 h on stream with preferential formation of 1-(furan-2-yl)− 5-methylhexan-3-one. © 2022
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