Tin-Functionalized Wood Biochar as a Sustainable Solid Catalyst for Glucose Isomerization in Biorefinery

Xiao Yang, Iris K.M. Yu, Dong Wan Cho, Season S. Chen, Daniel C.W. Tsang, Jin Shang, Alex C.K. Yip, Lei Wang, Yong Sik Ok

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This study tailored a novel engineered biochar as a solid catalyst for glucose isomerization by pyrolyzing Sn-functionalized wood waste under varying hypothesis-driven selected conditions (i.e., 650, 750, and 850 °C in N 2 and CO 2 atmosphere). The results showed that properties of biochar support (e.g., porosity and acid/base property) and chemical speciation of Sn were highly related to their catalytic performance. Variations in pyrolysis temperature and feed gas modified the porous structure and surface functionality of biochar as well as the valence state of doped Sn on the biochar. For the N 2 biochars, higher pyrolysis temperature enhanced the fructose yield yet had trivial effect on the selectivity, where 12.1 mol % fructose can be obtained at 150 °C and 20 min using biochar produced at 850 °C. This was plausibly attributed to the increased fraction of amorphous Sn structures and metallic Sn that were more reactive than its oxide form. At the pyrolysis temperature of 750 °C, the use of CO 2 increased the surface area by 40%, enlarged the pore volume from 0.062 to 0.107 cm 3 g -1 , and enriched the amorphous Sn structures compared to those for N 2 biochar. This probably accounted for the better catalytic performance of CO 2 biochar than that of N 2 biochar (50% and 100% enhancement in fructose yield and selectivity, respectively). The Sn-biochar catalysts may have promoted glucose isomerization via both the Lewis acid and Brønsted base pathways. This study paves a new way to design biochar as a sustainable and low-cost solid catalyst for biorefinery applications.

Original languageEnglish
Pages (from-to)4851-4860
Number of pages10
JournalACS Sustainable Chemistry and Engineering
Volume7
Issue number5
DOIs
Publication statusPublished - 2019 Mar 4

Fingerprint

Fructose
Tin
Isomerization
tin
pyrolysis
Glucose
Wood
glucose
Pyrolysis
catalyst
Catalysts
Chemical speciation
Wood wastes
speciation (chemistry)
Acids
Catalyst selectivity
temperature
acid
Temperature
Carbon Monoxide

Keywords

  • Biobased value-added chemicals
  • Engineered biochar
  • Lewis acid
  • Lignocellulosic biomass
  • Sugar conversion
  • Waste valorization/recycling

ASJC Scopus subject areas

  • Chemistry(all)
  • Environmental Chemistry
  • Chemical Engineering(all)
  • Renewable Energy, Sustainability and the Environment

Cite this

Tin-Functionalized Wood Biochar as a Sustainable Solid Catalyst for Glucose Isomerization in Biorefinery. / Yang, Xiao; Yu, Iris K.M.; Cho, Dong Wan; Chen, Season S.; Tsang, Daniel C.W.; Shang, Jin; Yip, Alex C.K.; Wang, Lei; Ok, Yong Sik.

In: ACS Sustainable Chemistry and Engineering, Vol. 7, No. 5, 04.03.2019, p. 4851-4860.

Research output: Contribution to journalArticle

Yang, Xiao ; Yu, Iris K.M. ; Cho, Dong Wan ; Chen, Season S. ; Tsang, Daniel C.W. ; Shang, Jin ; Yip, Alex C.K. ; Wang, Lei ; Ok, Yong Sik. / Tin-Functionalized Wood Biochar as a Sustainable Solid Catalyst for Glucose Isomerization in Biorefinery. In: ACS Sustainable Chemistry and Engineering. 2019 ; Vol. 7, No. 5. pp. 4851-4860.
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AU - Yang, Xiao

AU - Yu, Iris K.M.

AU - Cho, Dong Wan

AU - Chen, Season S.

AU - Tsang, Daniel C.W.

AU - Shang, Jin

AU - Yip, Alex C.K.

AU - Wang, Lei

AU - Ok, Yong Sik

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N2 - This study tailored a novel engineered biochar as a solid catalyst for glucose isomerization by pyrolyzing Sn-functionalized wood waste under varying hypothesis-driven selected conditions (i.e., 650, 750, and 850 °C in N 2 and CO 2 atmosphere). The results showed that properties of biochar support (e.g., porosity and acid/base property) and chemical speciation of Sn were highly related to their catalytic performance. Variations in pyrolysis temperature and feed gas modified the porous structure and surface functionality of biochar as well as the valence state of doped Sn on the biochar. For the N 2 biochars, higher pyrolysis temperature enhanced the fructose yield yet had trivial effect on the selectivity, where 12.1 mol % fructose can be obtained at 150 °C and 20 min using biochar produced at 850 °C. This was plausibly attributed to the increased fraction of amorphous Sn structures and metallic Sn that were more reactive than its oxide form. At the pyrolysis temperature of 750 °C, the use of CO 2 increased the surface area by 40%, enlarged the pore volume from 0.062 to 0.107 cm 3 g -1 , and enriched the amorphous Sn structures compared to those for N 2 biochar. This probably accounted for the better catalytic performance of CO 2 biochar than that of N 2 biochar (50% and 100% enhancement in fructose yield and selectivity, respectively). The Sn-biochar catalysts may have promoted glucose isomerization via both the Lewis acid and Brønsted base pathways. This study paves a new way to design biochar as a sustainable and low-cost solid catalyst for biorefinery applications.

AB - This study tailored a novel engineered biochar as a solid catalyst for glucose isomerization by pyrolyzing Sn-functionalized wood waste under varying hypothesis-driven selected conditions (i.e., 650, 750, and 850 °C in N 2 and CO 2 atmosphere). The results showed that properties of biochar support (e.g., porosity and acid/base property) and chemical speciation of Sn were highly related to their catalytic performance. Variations in pyrolysis temperature and feed gas modified the porous structure and surface functionality of biochar as well as the valence state of doped Sn on the biochar. For the N 2 biochars, higher pyrolysis temperature enhanced the fructose yield yet had trivial effect on the selectivity, where 12.1 mol % fructose can be obtained at 150 °C and 20 min using biochar produced at 850 °C. This was plausibly attributed to the increased fraction of amorphous Sn structures and metallic Sn that were more reactive than its oxide form. At the pyrolysis temperature of 750 °C, the use of CO 2 increased the surface area by 40%, enlarged the pore volume from 0.062 to 0.107 cm 3 g -1 , and enriched the amorphous Sn structures compared to those for N 2 biochar. This probably accounted for the better catalytic performance of CO 2 biochar than that of N 2 biochar (50% and 100% enhancement in fructose yield and selectivity, respectively). The Sn-biochar catalysts may have promoted glucose isomerization via both the Lewis acid and Brønsted base pathways. This study paves a new way to design biochar as a sustainable and low-cost solid catalyst for biorefinery applications.

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KW - Lignocellulosic biomass

KW - Sugar conversion

KW - Waste valorization/recycling

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