Preparation of Fe-BEA zeolites by isomorphous substitution for oxidehydration of glycerol to acrylic acid

被引：24
作者：
Diallo, Modibo Mounguengui [1 ]
Mijoin, Jerome [1 ]
Laforge, Sebastien [1 ]
Pouilloux, Yannick [1 ]
机构：
[1] Univ Poitiers, CNRS, Inst Chim Milieux & Mat Poitiers IC2MP, F-86073 Poitiers, France
来源：
CATALYSIS COMMUNICATIONS | 2016年 / 79卷
关键词：
Acrylic acid; Oxidehydration; Renewable resources; Zeolite; N2O DECOMPOSITION; OXIDE CATALYSTS; NITROUS-OXIDE; ACTIVE-SITES; OXIDATION; DEHYDRATION; ACROLEIN; IRON; CONVERSION; REDUCTION;
D O I：
10.1016/j.catcom.2016.03.003
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The preparation by post-synthesis isomorphous substitution of Fe-x-BEA-Y in one step was investigated for the oxidehydration of pure glycerol. TPR and DR UV-vis highlighted the presence of Fe(+III) species in the framework of zeolites. Iron allows the activation of the catalyst by the reduction by glycerol of part of Fe(+III) into Fe(+II) species, which stabilizes the glycerol conversion. Total glycerol conversion is obtained with 4 wt% of iron and acrylic acid yield reaches 23% over this catalyst. The Fe(+III) tetrahedral species are thought to be the main active redox sites for the formation of acrylic acid. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：58 / 62
页数：5
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