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Enhanced Selective Production of Arenes and Regenerating Rate in Aryl Ether Hydrogenolysis over Mesoporous Nickel in Plug-Flow Reactors

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State Key Laboratory of Separation Membrane and Membrane Processes, School of Chemistry and Chemical Engineering, Tianjin Key Laboratory of Green Chemical Technology and Process Engineering, Tianjin Polytechnic University, Tianjin 300387, China
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Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA
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Department of Chemistry & Biochemistry, University of California, Santa Barbara, CA 93106, USA
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School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of Education, Tianjin University, Tianjin 300072, China
*
Authors to whom correspondence should be addressed.
Catalysts 2019, 9(11), 904; https://doi.org/10.3390/catal9110904
Received: 16 October 2019 / Revised: 25 October 2019 / Accepted: 25 October 2019 / Published: 29 October 2019
(This article belongs to the Special Issue Advances in Green Catalysis for Sustainable Organic Synthesis)
Ordered mesoporous nickel (mesoNi) was successfully synthesized with a hard templating method by using KIT-6 ordered mesoporous silica as a template. With small-angle X-ray diffraction (SAXRD), transmission electron microscopy (TEM) and N2 sorption technique, the mesoporous structures of synthesized catalysts were characterized with desired high surface area (84.2 m2·g−1) and narrow pore size distribution. MesoNi exhibited outstanding catalytic cleavage activity for lignin model compounds (benzyl phenyl ether, BPE) with high selectivity of arenes in the flow reactor system. MesoNi also showed higher regeneration rates than non-porous ones, which were confirmed from deactivation and regeneration mechanism studies in the flow reaction system with varied high temperature and pressure. The adsorbed poisoning species on the mesoporous Ni surface were analyzed and phenol could be the main poisoning species. The excellent catalytic cleavage performance of mesoNi originates from their unique mesoporous structure, which offers high surface area and Ni active sites. The outstanding catalytic performance shows that this process provides a promising candidate for improved lignin valorization with general applicability. View Full-Text
Keywords: ordered mesoporous nickel; hydrogenolysis; aryl ether; arene; regeneration ordered mesoporous nickel; hydrogenolysis; aryl ether; arene; regeneration
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MDPI and ACS Style

Zheng, C.; Wang, D.; Hu, X.; Ma, C.; Liu, X.; Wang, Y.; Yu, Y.; Wang, J.; Sun, X. Enhanced Selective Production of Arenes and Regenerating Rate in Aryl Ether Hydrogenolysis over Mesoporous Nickel in Plug-Flow Reactors. Catalysts 2019, 9, 904.

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