期刊
MOLECULAR CATALYSIS
卷 449, 期 -, 页码 85-92出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mcat.2018.02.015
关键词
Glycerol; Oxidehydration; Acrylic acid; ZSM-5 zeolite; Keggin-type heteropoly acid
资金
- JSPS KAKENHI [JP16K18291]
- Grants-in-Aid for Scientific Research [26241030, 16K18291] Funding Source: KAKEN
Glycerol is a promising renewable feedstock for the manufacture of C3 derivatives. We investigated the one-pass oxidehydrarion of glycerol through the dehydration of glycerol into acrolein, followed by the oxidation of acrolein. A novel bifunctional catalyst for this reaction was prepared by loading the Keggin-type molybdovanadophosphoric Wacid H3+xPVxMo12.xO40 (x = 0-3) on ZSM-5 (MFI) zeolite (Si/Al = 45) exhibiting both dehydration and oxidation activity. H5PV2Mo10O40 and H6PV3Mo9O40 were stable and dispersed on ZSM-5 zeolite, and the acidic property of the ZSM-5 zeolite was retained. The oxidehydration of glycerol was catalyzed by H5PV2Mo10O40 loaded on the ZSM-5 zeolite with high selectivity of acrylic acid. In-situ IR analysis suggests that acrolein molecules adsorbed on H5PV2Mo10O40/ZSM-5 were converted into acrylic acid due to the inhibition of side-reactions such as polymerization and auto-condensation, which induced coke formation, compared with the other Mo and V-based oxides loaded on ZSM-5 zeolite.
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