期刊
CATALYSTS
卷 12, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/catal12091070
关键词
erythritol; glycerol; hydrodeoxygenation; diol; Pt; W; SBA-15
资金
- Council of Scientific and Industrial Research (CSIR), New Delhi [SSB 000926, P90807]
- CSIR-Indian Institute of Petroleum, Dehradun for the help in NH
Pt/W/SBA-15 catalysts prepared by the sequential impregnation method were evaluated for selective C-O cleavage of erythritol and glycerol in an aqueous medium. The catalysts showed synergistic enhancement in C-O hydrogenolysis activity/selectivity at higher Pt loadings, resulting in high yields of terminal diols.
Pt/W/SBA-15 catalysts (with Pt-loading = 0.5-4 wt% and W-loading = 1 wt%) prepared by the sequential impregnation method were evaluated for selective C-O cleavage of erythritol and glycerol in an aqueous medium. The Pt and W particles dispersed on SBA-15 approached close proximity at higher Pt loadings and afforded synergistic enhancement in C-O hydrogenolysis activity/selectivity. 1,4-Butanediol yields of 30.9% (at 190 degrees C, 50 bar H-2 and 24 h) and 1,3-propanediol yields of 34.4% (at 190 degrees C, 50 bar H-2 and 12 h of reaction) were obtained over these catalysts. Pt nanoparticles (facilitating dissociative H-2 adsorption and spillover) and W (present as acidic oligomeric WOx species; activating and coordinating the polyol via 1 degrees-OH group) worked in tandem for the selective hydrogenolysis of polyols yielding terminal diols of industrial demand.
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