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Published in: Cellulose 11/2022

07-06-2022 | Original Research

One-pot hydrolytic hydrogenation of carbohydrates to hexitols catalyzed by Ru loaded P and Si-containing hierarchical porous biochars with excellent catalytic efficiency

Authors: Shuainan Chen, Feng Mao, Shimin Tang, Zheng Yi, Huanhuan Zhang, Jialuo She, Bo Yang, Chao Zhang, Yachun Liu, Zaihui Fu

Published in: Cellulose | Issue 11/2022

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Abstract

The one-pot hydrolytic hydrogenation of carbohydrates to sugar alcohols is one of the important value-added transformations of biomass, but the hydrolysis efficiency of carbohydrates in this one-pot conversion is still limited by the high cleavage energy of their β-1,4-glycosidic bonds and the concomitant serious side-reactions. Therefore, it is necessary to develop the new acidic carriers to improve the key first-step hydrolysis. This paper discloses that a forestry processing waste bamboo powder can be converted into the P and Si-containing porous biochar (PSBC) via inserting silica sol, impregnating concentrated phosphoric acid (H3PO4) and heating carbonization. Due to the improved porosity and strong acidity of PSBC and its affinity to β-1,4-glycosidic bonds, this new acid carrier exhibits an outstanding catalysis performance for the hydrolysis of cellulose, cellobiose, especially sucrose and inulin, affording ca. 76.2% glucose yield in cellulose hydrolysis at 150 °C. More importantly, PSBC can efficiently and uniformly load Ru nanometer particles (average size of 1.5 nm) to fabricate 1%Ru/PSBC as an excellent bifunctional catalyst for the one-pot conversion of these carbohydrates to hexitols, affording ca. 85.2% hexitols with 51.7 h−1 turnover frequency in the one-pot conversion of cellulose under 150 °C and 3 MPa H2 pressure. This work not only provides an effective strategy for the preparation of biomass-derived bifunctional catalysts, but also it opens up new voyages for the development of efficient bio-refining.

Graphical abstract

Ru-loaded P and Si-containing porous biochar (1% Ru/PSBC) is an excellent bifunctional catalyst for the hydrolytic hydrogenation of carbohydrates under relatively mild conditions, affording ca. 85.2% hexitols with 51.7 h−1 TOF in the one-pot conversion of cellulose.

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Appendix
Available only for authorised users
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Metadata
Title
One-pot hydrolytic hydrogenation of carbohydrates to hexitols catalyzed by Ru loaded P and Si-containing hierarchical porous biochars with excellent catalytic efficiency
Authors
Shuainan Chen
Feng Mao
Shimin Tang
Zheng Yi
Huanhuan Zhang
Jialuo She
Bo Yang
Chao Zhang
Yachun Liu
Zaihui Fu
Publication date
07-06-2022
Publisher
Springer Netherlands
Published in
Cellulose / Issue 11/2022
Print ISSN: 0969-0239
Electronic ISSN: 1572-882X
DOI
https://doi.org/10.1007/s10570-022-04650-2

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