MCM-41 Supported Co-based Bimetallic Catalysts for Aqueous Phase Transformation of Glucose to Biochemicals

Processes

Federica Menegazzo¹  Elena Ghedini¹  Somayeh Taghavi¹  Michela Signoretto¹  Delia Gazzoli²  Daniela Pietrogiacomi²  Giuseppe Fornasari³  Andrea Fasolini³  Angelo Vaccari³  Aisha Matayeva³  Francesco Basile³ 

[1] CATMAT Lab, Department of Molecular Sciences and Nanosystems, Ca’ Foscari University, Venice and INSTM-RUVe, 155 Via Torino, 30172 Venezia Mestre, Italy;Department of Chemistry, Sapienza University of Rome, 5 P.le A.Moro, 00185 Rome, Italy;Department of Industrial Chemistry, University of Bologna, 4 Viale del Risorgimento, 40136 Bologna, Italy;

关键词: glucose;    biochemicals;    MCM-41;    bimetallic;    reactivity;    product selectivity;   

DOI  :  10.3390/pr8070843

来源: DOAJ

【 摘 要 】

The transformation of glucose into valuable biochemicals was carried out on different MCM-41-supported metallic and bimetallic (Co, Co-Fe, Co-Mn, Co-Mo) catalysts and under different reaction conditions (150 °C, 3 h; 200 °C, 0.5 h; 250 °C, 0.5 h). All catalysts were characterized using N₂ physisorption, Temperature Programmed Reduction (TPR), Raman, X-ray Diffraction (XRD) and Temperature Programmed Desorption (TPD) techniques. According to the N₂-physisorption results, a high surface area and mesoporous structure of the support were appropriate for metal dispersion, reactant diffusion and the formation of bioproducts. Reaction conditions, bimetals synergetic effects and the amount and strength of catalyst acid sites were the key factors affecting the catalytic activity and biochemical selectivity. Sever reaction conditions including high temperature and high catalyst acidity led to the formation mainly of solid humins. The NH₃-TPD results demonstrated the alteration of acidity in different bimetallic catalysts. The 10Fe10CoSiO₂ catalyst (MCM-41 supported 10 wt.%Fe, 10 wt.%Co) possessing weak acid sites displayed the best catalytic activity with the highest carbon balance and desired product selectivity in mild reaction condition. Valuable biochemicals such as fructose, levulinic acid, ethanol and hydroxyacetone were formed over this catalyst.

【 授权许可】

Unknown