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Enhanced conversion of cellulose to ethanol and propanol using a mesoporous Pt-WOx/Nb2O5 catalyst

Daguo Wu,Yong Liu,Xinghua Zhang,Jianguo Liu,Qi Zhang,Longlong Ma,Lungang Chen

The effective utilization of biomass is essential for addressing environmental challenges. The direct conversion of cellulose into chemicals and fuels is a key step in fostering a sustainable society. In this study, a mesoporous Pt-WO x /Nb 2 O 5 catalyst is synthesized and characterized using N 2 sorption, XRD, ICP, CO pulse, TEM, SEM, NH 3 -TPD, PY-IR, H 2 -TPR, and XPS. Under optimized catalyst preparation and reaction conditions, the yields of ethanol and propanol reach 50.3 % and 20.2 %, respectively. The mesoporous structure of Nb 2 O 5 , coupled with Pt, provides a rich balance of acidic and hydrogenation-active sites. Additionally, WO x plays a crucial role in the C C bond cleavage of cellulosic glucose and the C O bond cleavage of ethylene glycol, facilitating ethanol formation through Pt and the abundant Lewis acid sites from Nb 2 O 5 .