Highly efficient transfer hydrodeoxygenation of vanillin over Sn4+-induced highly dispersed Cu-based catalyst

被引:48
作者
Gao, Zhi [1 ]
Liu, Fengqing [1 ]
Wang, Li [1 ]
Luo, Feng [1 ]
机构
[1] East China Univ Technol, Sch Chem Biol & Mat Sci, State Key Lab Nucl Resources & Environm, Nanchang 330013, Jiangxi, Peoples R China
基金
中国国家自然科学基金;
关键词
Lattice confinement; Layered double hydroxide; Cu-based catalyst; Catalytic transfer hydrodeoxygenation; Vanillin; NITROGEN-DOPED CARBON; LAYERED DOUBLE HYDROXIDES; TRANSFER HYDROGENATION; SINGLE-ATOM; PHASE HYDROGENATION; ETHYL LEVULINATE; CO OXIDATION; BIO-OIL; BIOMASS; NANOPARTICLES;
D O I
10.1016/j.apsusc.2019.02.219
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Developing highly efficient non-noble-metal catalysts for the upgrade of abundant and low-cost renewable raw biomass into high-quality biofuels and important chemicals is especially desirable, but still remains huge challenges. Herein, Sn4+-induced highly dispersed Cu-based catalyst, Cu/Zn-Al-Sn layered double hydroxide (Cu/ZnAlSn-LDH), is delicately constructed for catalytic transfer hydrodeoxygenation of vanillin to promising 2-methoxy-4-methylphenol (MMP) biofuel using 2-propanol as hydrogen source and solvent without any external hydrogen supply. Nearly total MMP yield is achieved under moderate reaction conditions (180 degrees C, 4 h) and the turnover number (TON) value calculated in Cu/ZnAlSn-LDH is about 3 times higher than that in Sn-free catalyst (Cu/ZnAl-LDH). Characterizations results reveal that the Sn4+ species confined in the lattice of brucite-like layer of ZnAlSn-LDH are existed in electron-rich state, which can promote the formation of smaller Cu nanoparticles (1.95 nm) in Cu/ZnAlSn-LDH compared to those in Sn-free Cu/ZnAl-LDH catalyst (6.08 nm), as well as stronger metal-support interaction, thus leading to the higher catalytic performance and stability. The present findings offer a new avenue to strategically fabricate highly dispersed non-noble metal catalysts with enhanced catalytic performance by adjusting surface structures and compositions of supports for a wide range of hydrodeoxygenation of other biomass-derived compounds without any external hydrogen.
引用
收藏
页码:548 / 556
页数:9
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