MoOx-decorated Ru/TiO2 with a monomeric structure boosts the selective one-pot conversion of levulinic acid to 1,4-pentanediol

被引:4
作者
Rodiansono [1 ,2 ]
Azzahra, Atina Sabila [2 ]
Dewi, Heny Puspita [2 ]
Adilina, Indri Badria [3 ,4 ]
Sembiring, Kiky Corneliasari [3 ]
机构
[1] Lambung Mangkurat Univ, Fac Math & Nat Sci, Dept Chem, Jl A Yani Km 36 0, Banjarbaru, South Kalimanta, Indonesia
[2] Lambung Mangkurat Univ, Inorgan Mat & Catalysis IMCat Lab & Catalysis Sust, Jl A Yani Km 36 0, Banjarbaru, South Kalimanta, Indonesia
[3] BRIN, Res Ctr Adv Chem, Puspiptek Serpong, Indonesia
[4] Res Collaborat Ctr Adv Energy Mat, Jalan Ganesha 10, Bandung 40132, West Java, Indonesia
关键词
GAMMA-VALEROLACTONE; LIGNOCELLULOSIC BIOMASS; CATALYTIC-HYDROGENATION; CO2; METHANATION; SURFACE-ACIDITY; 2-METHYLTETRAHYDROFURAN; NANOPARTICLES; WATER; HYDRODEOXYGENATION; HYDROGENOLYSIS;
D O I
10.1039/d3cy00544e
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
Molybdenum oxide-decorated ruthenium on titanium oxide (Ru-(y)MoOx/TiO2) catalysts with monomeric structure exhibited high efficiency and selectivity for the selective synthesis of 1,4-pentanediol (1,4-PeD) via the one-pot conversion of levulinic acid (LA) under mild reaction conditions. Ru-(y)MoOx/TiO2 catalysts (y = 0.24-1.27 wt%) were synthesized via a hydrothermal method at 150 & DEG;C for 24 h, followed by calcination under N-2 stream at 30-500 & DEG;C (ramping 4 & DEG;C min(-1)) and reduction with H-2 at 500 & DEG;C for 1.5 h. A low Mo co-loading of 0.24-0.47 wt% not only improved the catalytic activity (the reaction rate of LA conversion) but also significantly enhanced the selectivity of 1,4-PeD. Further increase in the Mo co-loading (0.91-1.27 wt%) resulted in a slight decrease of both LA conversion and 1,4-PeD yield. Ru-(0.47)MoOx/TiO2 (0.47 is Mo co-loaded (wt%); Mo/Ru = 1 : 10.5) was found to be the best catalyst with a calculated rate constant of 1.4132 h(-1), which is approximately 5 times higher than that of unmodified Ru/TiO2 catalyst (0.2605 h(-1)). Over the best catalyst, a high yield of 1,4-PeD (81%) at 110 & DEG;C and 40 bar H-2 after 3 h was obtained, and the yield of 1,4-PeD significantly increased to 91% when the reaction time was prolonged to 6 h. The Ru-(0.47)MoOx/TiO2 catalyst is reusable and can be reactivated by flowing H-2 at 500 & DEG;C for 1 h with no loss of catalytic activity.
引用
收藏
页码:4466 / 4476
页数:11
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