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

Catalysts

卷:9

Chao Ma¹  Yinkui Yu²  Jiaqi Wang²  Xiaohong Sun³  Xudong Hu³  Dongxue Wang⁴  Xuan Liu⁴  Chunming Zheng⁴  Ying Wang⁴ 

[1] Biochemistry, University of California, Santa Barbara, CA 93106, USA;

[2] Department of Chemical Engineering, University of California, Santa Barbara, CA 93106, USA;

[3] Department of Chemistry &

[4] 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;

关键词: ordered mesoporous nickel;    hydrogenolysis;    aryl ether;    arene;    regeneration;   

DOI  :  10.3390/catal9110904

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown