Journal
CHEMICAL ENGINEERING SCIENCE
Volume 253, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ces.2022.117554
Keywords
Hydrogenolysis; Lignin; Diphenyl ether; Benzyl phenyl ether; Ru; Activated carbon
Categories
Funding
- National Key R&D Program of China [2017YFE0124200]
- National Natural Science Foundation of China [22178375, 21978317]
- Natural Science Foundation of Jiangsu Province [BK20200028]
- Fundamental Research Funds for the Central Universities [2021YCPY0201]
- Priority Academic Program Development of Jiangsu Higher Education Institutions
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Selective hydrogenolysis of C-O bonds in lignin is a promising strategy for producing high value-added biofuels and chemicals. Ru/AC catalysts prepared in this study effectively promoted the cleavage of C-O bonds in DPE, BPE, and lignin under mild conditions.
Selective hydrogenolysis of C-O bonds in lignin is regarded as the most promising strategy to produce high value-added biofuels and chemicals. Herein, Ru/AC catalysts of Ru supported on AC from coal tar pitch were successfully prepared and could effectively promote the cleavage of C-O bonds in diphenyl ether (DPE), benzyl phenyl ether (BPE) and lignin under mild conditions. In the case of an activation ratio of 4:1, the obtained Ru/4-1AC possessed the large specific surface area, more defects, small Ru metal particle size and low Ru0 bonding energy, exhibiting the high catalytic performance. The conversion investigation of the mixture of DPE and BPE revealed that BPE was preferentially adsorbed on Ru metal of the catalyst surface for the C-O bond cleavage due to the lower bond dissociation energy of C-O bonds of BPE and the stronger adsorption energy of BPE calculated by a density functional theory. (c) 2022 Elsevier Ltd. All rights reserved.
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