Electrocatalyst hydrogenation of lignol-derived compounds: Conversion regularity and product selectivity

WEI Dening; TANG Hongbiao; YANG Gaixiu; YANG Juntao; LI Ning; CHEN Guanyi; CHEN Chunxiang; FENG Zhijie

doi:10.1016/S1872-5813(23)60405-0

Volume 52 Issue 5

May 2024

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Article Navigation > Journal of Fuel Chemistry and Technology > 2024 > 52(5): 677-686

WEI Dening, TANG Hongbiao, YANG Gaixiu, YANG Juntao, LI Ning, CHEN Guanyi, CHEN Chunxiang, FENG Zhijie. Electrocatalyst hydrogenation of lignol-derived compounds: Conversion regularity and product selectivity[J]. Journal of Fuel Chemistry and Technology, 2024, 52(5): 677-686. doi: 10.1016/S1872-5813(23)60405-0

Citation:

WEI Dening, TANG Hongbiao, YANG Gaixiu, YANG Juntao, LI Ning, CHEN Guanyi, CHEN Chunxiang, FENG Zhijie. Electrocatalyst hydrogenation of lignol-derived compounds: Conversion regularity and product selectivity[J]. Journal of Fuel Chemistry and Technology, 2024, 52(5): 677-686. doi: 10.1016/S1872-5813(23)60405-0

Citation:

WEI Dening, TANG Hongbiao, YANG Gaixiu, YANG Juntao, LI Ning, CHEN Guanyi, CHEN Chunxiang, FENG Zhijie. Electrocatalyst hydrogenation of lignol-derived compounds: Conversion regularity and product selectivity[J]. Journal of Fuel Chemistry and Technology, 2024, 52(5): 677-686. doi: 10.1016/S1872-5813(23)60405-0

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Electrocatalyst hydrogenation of lignol-derived compounds: Conversion regularity and product selectivity

doi: 10.1016/S1872-5813(23)60405-0

WEI Dening^{1, 2
,},
TANG Hongbiao^1
,,
YANG Gaixiu^{1
,
,},
YANG Juntao^1
,,
LI Ning^3
,,
CHEN Guanyi^3
,,
CHEN Chunxiang^4
,,
FENG Zhijie¹

1.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
2.
School of Energy and Engineering, University of Science and Technology of China, Hefei 230026, China
3.
Georgia Tech Shenzhen Institute, Tianjin University, Shenzhen 518071, China
4.
College of Mechanical Engineering, Guangxi University, Nanning 530004, China

Funds: The project was supported by Shenzhen Science and Technology Program (JCYJ20200109150210400), the National Natural Science Foundation of China (52176214), the Youth Innovation Promotion Association CAS (2020345), the Ministry of Science and Technology of the People's Republic of China (2018YFE0111000), Key Research and Development Program of Jiangxi province (20214BBG74007).

More Information

Corresponding author: E-mail: yanggx@ms.giec.ac.cnE-mail: yanggx@ms.giec.ac.cn
Received Date: 2023-10-19
Accepted Date: 2023-12-26
Rev Recd Date: 2023-12-25

Available Online: 2024-01-18

Publish Date: 2024-05-01

Abstract

Abstract

Phenolic derivatives, crucial components of bio-oil, require thorough understanding of their electrocatalytic hydrogenation (ECH) properties for efficient bio-oil utilization. This study investigated guaiacol, a representative phenolic derivative in bio-oil, focusing on its ECH mechanism, conversion, and product selectivity under varied conditions (temperature: 40−80 °C, perchloric acid concentration: 0.2−1.0 mol/L, current intensity: ((−10)−(−150) mA). Additionally, this study also explored the influence of intermediate products (2-methoxycyclohexanone and cyclohexanone) on both the conversion rate and the selectivity of the products. The experiment had revealed that guaiacol's ECH conversion rate improved with higher temperature and current intensity, whereas an increase in perchloric acid concentration negatively affected the conversion. Significantly, the presence of intermediate products, especially 2-methoxycyclohexanone, markedly enhanced the ECH conversion of guaiacol. Investigating further into the ECH mechanism of other phenolic derivatives, including phenol, pyrocatechol, guaiacol eugenol, and vanillin, as well as their combination, revealed a trend where conversion rates inversely correlated with the complexity of the functional groups on the benzene ring. Specifically, phenol, with its simpler structure, showed the highest conversion rate at 89.34%, in stark contrast to vanillin which, owing to its more complex structure, exhibited the lowest at 46.79%. In our multi-component mixture studies, it was observed that synergistic and competitive interactions significantly alter ECH conversion rates, with some mixtures showing enhanced conversion rate indicative of synergistic effects.
- electrocatalytic hydrogenation (ECH),
- phenols derived compounds,
- mixing compounds,
- selectivity of product

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References(28)

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