Toward understanding of the role of Lewis acidity in aldol condensation of acetone and furfural using MOF and zeolite catalysts

被引:86
|
作者
Kikhtyanin, Oleg [1 ]
Kubicka, David [1 ]
Cejka, Jiri [2 ,3 ]
机构
[1] UniCRE RENTECH, Res Inst Inorgan Chem, Chempark Litvinov, Litvinov 43670, Czech Republic
[2] Acad Sci Czech Republ, J Heyrovsky Inst Phys Chem, Vvi, CZ-18223 Prague 8, Czech Republic
[3] King Fahd Univ Petr & Minerals, Ctr Res Excellence Petr Refining & Petrochem, Dhahran 31261, Saudi Arabia
关键词
Metal organic framework; Aldol condensation; Acidic catalysis; Lewis acidity; Bronsted acidity; METAL-ORGANIC FRAMEWORKS; MESOPOROUS MOLECULAR-SIEVES; LAYERED DOUBLE HYDROXIDES; HETEROGENEOUS CATALYSTS; BIOMASS; HYDROTALCITES; MIL-100(FE); STABILITY; OXIDATION;
D O I
10.1016/j.cattod.2014.08.016
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
The aldol condensation of furfural and acetone allow producing higher value products from simple organic compounds resulting from biomass processing. In this paper, a number of metal organic framework (MOF) materials possessing Lewis acidity were investigated as catalysts in this reaction. Experiments were carried out under batch reaction conditions in Parr stirred autoclave at 100 degrees C during 0-4 h. The catalytic results indicated that the aldol condensation over MOFs took place with the participation of acidic rather than basic centers. The catalytic performance of these materials exhibited could not be explained by their reported Lewis acidity. Experiments with heat-activated and re-hydrated samples showed that Bronsted acid sites could also be present in MOFs as a consequence of interaction of metal cation with surrounding water molecules. As a consequence, the catalysts having such generated Bronsted acidity exhibited enhanced activity in the reaction. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:158 / 162
页数:5
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