Glycerol conversion in the aqueous solution under hydrogen over Ru/C + an ion-exchange resin and its reaction mechanism

Tomohisa Miyazawa; Yohei Kusunoki; Kimio Kunimori; Keiichi Tomishige

doi:10.1016/j.jcat.2006.03.023

Glycerol conversion in the aqueous solution under hydrogen over Ru/C + an ion-exchange resin and its reaction mechanism

Tomohisa Miyazawa, Yohei Kusunoki, Kimio Kunimori, Keiichi Tomishige

Research output: Contribution to journal › Article › peer-review

471 Citations (Scopus)

Abstract

Of the various noble metals (Ru/C, Rh/C, Pt/C, and Pd/C) and acid catalysts [an ion-exchange resin (Amberlyst), H₂SO₄(aq), and HCl(aq)], the combination of Ru/C with Amberlyst is effective in the dehydration + hydrogenation (i.e., hydrogenolysis) of glycerol under mild reaction conditions (393 K, 8.0 MPa). The dehydration of glycerol to acetol is catalyzed by the acid catalysts. The subsequent hydrogenation of acetol on the metal catalysts gives 1,2-propanediol. The activity of the metal catalyst + Amberlyst in glycerol hydrogenolysis can be related to that of acetol hydrogenation over the metal catalysts. Regarding acid catalysts, H₂SO₄(aq) shows lower glycerol dehydration activity than Amberlyst, and HCl(aq) strongly decreases the activity of acetol hydrogenation on Ru/C. In addition, the OH group on Ru/C can also catalyze the dehydration of glycerol to 3-hydroxypropionaldehyde, which can then be converted to 1,3-propanediol through subsequent hydrogenation and other degradation products.

Original language	English
Pages (from-to)	213-221
Number of pages	9
Journal	Journal of Catalysis
Volume	240
Issue number	2
DOIs	https://doi.org/10.1016/j.jcat.2006.03.023
Publication status	Published - 2006 Jun 10
Externally published	Yes

Keywords

Acetol
Acid
Degradation
Dehydration
Glycerol
Hydrogenolysis
Ion exchange resin
Propanediol
Ruthenium

ASJC Scopus subject areas

Catalysis
Physical and Theoretical Chemistry

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10.1016/j.jcat.2006.03.023

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title = "Glycerol conversion in the aqueous solution under hydrogen over Ru/C + an ion-exchange resin and its reaction mechanism",

abstract = "Of the various noble metals (Ru/C, Rh/C, Pt/C, and Pd/C) and acid catalysts [an ion-exchange resin (Amberlyst), H2SO4(aq), and HCl(aq)], the combination of Ru/C with Amberlyst is effective in the dehydration + hydrogenation (i.e., hydrogenolysis) of glycerol under mild reaction conditions (393 K, 8.0 MPa). The dehydration of glycerol to acetol is catalyzed by the acid catalysts. The subsequent hydrogenation of acetol on the metal catalysts gives 1,2-propanediol. The activity of the metal catalyst + Amberlyst in glycerol hydrogenolysis can be related to that of acetol hydrogenation over the metal catalysts. Regarding acid catalysts, H2SO4(aq) shows lower glycerol dehydration activity than Amberlyst, and HCl(aq) strongly decreases the activity of acetol hydrogenation on Ru/C. In addition, the OH group on Ru/C can also catalyze the dehydration of glycerol to 3-hydroxypropionaldehyde, which can then be converted to 1,3-propanediol through subsequent hydrogenation and other degradation products.",

keywords = "Acetol, Acid, Degradation, Dehydration, Glycerol, Hydrogenolysis, Ion exchange resin, Propanediol, Ruthenium",

author = "Tomohisa Miyazawa and Yohei Kusunoki and Kimio Kunimori and Keiichi Tomishige",

year = "2006",

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AU - Miyazawa, Tomohisa

AU - Kusunoki, Yohei

AU - Kunimori, Kimio

AU - Tomishige, Keiichi

PY - 2006/6/10

Y1 - 2006/6/10

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AB - Of the various noble metals (Ru/C, Rh/C, Pt/C, and Pd/C) and acid catalysts [an ion-exchange resin (Amberlyst), H2SO4(aq), and HCl(aq)], the combination of Ru/C with Amberlyst is effective in the dehydration + hydrogenation (i.e., hydrogenolysis) of glycerol under mild reaction conditions (393 K, 8.0 MPa). The dehydration of glycerol to acetol is catalyzed by the acid catalysts. The subsequent hydrogenation of acetol on the metal catalysts gives 1,2-propanediol. The activity of the metal catalyst + Amberlyst in glycerol hydrogenolysis can be related to that of acetol hydrogenation over the metal catalysts. Regarding acid catalysts, H2SO4(aq) shows lower glycerol dehydration activity than Amberlyst, and HCl(aq) strongly decreases the activity of acetol hydrogenation on Ru/C. In addition, the OH group on Ru/C can also catalyze the dehydration of glycerol to 3-hydroxypropionaldehyde, which can then be converted to 1,3-propanediol through subsequent hydrogenation and other degradation products.

KW - Acetol

KW - Acid

KW - Degradation

KW - Dehydration

KW - Glycerol

KW - Hydrogenolysis

KW - Ion exchange resin

KW - Propanediol

KW - Ruthenium

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ER -

Glycerol conversion in the aqueous solution under hydrogen over Ru/C + an ion-exchange resin and its reaction mechanism

Abstract

Keywords

ASJC Scopus subject areas

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