Catalytic lignin valorization over HSZ-supported CuNiAl-based catalysts with microwave heating

Peng Liu; Changzhou Chen; Minghao Zhou; Haihong Xia; Jing Li; Brajendra K. Sharma; Jianchun Jiang

doi:10.1039/d0nj05371f

Catalytic lignin valorization over HSZ-supported CuNiAl-based catalysts with microwave heating

Peng Liu, Changzhou Chen, Minghao Zhou, Haihong Xia, Jing Li, Brajendra K. Sharma, Jianchun Jiang

Illinois Sustainable Technology Center

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Abstract

Microwave assisted lignin depolymerization was investigated over HSZ-supported CuNiAl-based catalysts. The synergistic effect between the acidic HSZ support and mixed metal oxides was studied in detail to explore the difference in catalytic activity during the lignin depolymerization process. Improvements in bio-oil properties, such as the H/C ratio and HHV value, were observed in comparison with raw lignin under rather mild conditions (140 °C, 80 min) in the absence of external hydrogen. The molecular weight of bio-oil obtained over HSZ-supported catalysts decreased, indicating that the increased acidity in the catalyst could facilitate microwave assisted lignin depolymerization. The product distributions in bio-oil were also analyzed and plausible depolymerization mechanisms were proposed considering the distributions of lignin-derived dimers/trimers and monomers.

Original language	English (US)
Pages (from-to)	8258-8268
Number of pages	11
Journal	New Journal of Chemistry
Volume	45
Issue number	18
DOIs	https://doi.org/10.1039/d0nj05371f
State	Published - May 14 2021

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Materials Chemistry

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10.1039/d0nj05371f

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@article{d7d37862d6f74a89af39fcc41723f433,

title = "Catalytic lignin valorization over HSZ-supported CuNiAl-based catalysts with microwave heating",

abstract = "Microwave assisted lignin depolymerization was investigated over HSZ-supported CuNiAl-based catalysts. The synergistic effect between the acidic HSZ support and mixed metal oxides was studied in detail to explore the difference in catalytic activity during the lignin depolymerization process. Improvements in bio-oil properties, such as the H/C ratio and HHV value, were observed in comparison with raw lignin under rather mild conditions (140 °C, 80 min) in the absence of external hydrogen. The molecular weight of bio-oil obtained over HSZ-supported catalysts decreased, indicating that the increased acidity in the catalyst could facilitate microwave assisted lignin depolymerization. The product distributions in bio-oil were also analyzed and plausible depolymerization mechanisms were proposed considering the distributions of lignin-derived dimers/trimers and monomers. ",

author = "Peng Liu and Changzhou Chen and Minghao Zhou and Haihong Xia and Jing Li and Sharma, {Brajendra K.} and Jianchun Jiang",

note = "Funding Information: The authors are grateful for the financial support from the National Natural Science Foundation of China (31890773, 31700645). Publisher Copyright: {\textcopyright} 2021 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.",

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month = may,

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doi = "10.1039/d0nj05371f",

language = "English (US)",

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T1 - Catalytic lignin valorization over HSZ-supported CuNiAl-based catalysts with microwave heating

AU - Liu, Peng

AU - Chen, Changzhou

AU - Zhou, Minghao

AU - Xia, Haihong

AU - Li, Jing

AU - Sharma, Brajendra K.

AU - Jiang, Jianchun

N1 - Funding Information: The authors are grateful for the financial support from the National Natural Science Foundation of China (31890773, 31700645). Publisher Copyright: © 2021 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

PY - 2021/5/14

Y1 - 2021/5/14

N2 - Microwave assisted lignin depolymerization was investigated over HSZ-supported CuNiAl-based catalysts. The synergistic effect between the acidic HSZ support and mixed metal oxides was studied in detail to explore the difference in catalytic activity during the lignin depolymerization process. Improvements in bio-oil properties, such as the H/C ratio and HHV value, were observed in comparison with raw lignin under rather mild conditions (140 °C, 80 min) in the absence of external hydrogen. The molecular weight of bio-oil obtained over HSZ-supported catalysts decreased, indicating that the increased acidity in the catalyst could facilitate microwave assisted lignin depolymerization. The product distributions in bio-oil were also analyzed and plausible depolymerization mechanisms were proposed considering the distributions of lignin-derived dimers/trimers and monomers.

AB - Microwave assisted lignin depolymerization was investigated over HSZ-supported CuNiAl-based catalysts. The synergistic effect between the acidic HSZ support and mixed metal oxides was studied in detail to explore the difference in catalytic activity during the lignin depolymerization process. Improvements in bio-oil properties, such as the H/C ratio and HHV value, were observed in comparison with raw lignin under rather mild conditions (140 °C, 80 min) in the absence of external hydrogen. The molecular weight of bio-oil obtained over HSZ-supported catalysts decreased, indicating that the increased acidity in the catalyst could facilitate microwave assisted lignin depolymerization. The product distributions in bio-oil were also analyzed and plausible depolymerization mechanisms were proposed considering the distributions of lignin-derived dimers/trimers and monomers.

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DO - 10.1039/d0nj05371f

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JF - New Journal of Chemistry

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Catalytic lignin valorization over HSZ-supported CuNiAl-based catalysts with microwave heating

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