中孔Pt-WOx/Nb2O5催化剂促进纤维素转化为乙醇和丙醇

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2025-04-07 DOI:10.1016/j.apcata.2025.120275

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

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引用次数: 0

摘要

有效利用生物质对应对环境挑战至关重要。将纤维素直接转化为化学品和燃料是培育可持续社会的关键一步。本研究合成了一种介孔Pt-WOx/Nb2O5催化剂，并采用N2吸附、XRD、ICP、CO脉冲、TEM、SEM、NH3-TPD、PY-IR、H2-TPR和XPS对其进行了表征。在优化的催化剂制备和反应条件下，乙醇和丙醇的收率分别达到50.3% %和20.2% %。Nb2O5的介孔结构，加上Pt，提供了丰富的酸性和氢化活性位点的平衡。此外，WOx在纤维素葡萄糖的CC键裂解和乙二醇的CO键裂解中起着至关重要的作用，促进了Pt和Nb2O5中丰富的Lewis酸位点形成乙醇。

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

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/Nb₂O₅ catalyst is synthesized and characterized using N₂ sorption, XRD, ICP, CO pulse, TEM, SEM, NH₃-TPD, PY-IR, H₂-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 Nb₂O₅, coupled with Pt, provides a rich balance of acidic and hydrogenation-active sites. Additionally, WO_x plays a crucial role in the CC bond cleavage of cellulosic glucose and the CO bond cleavage of ethylene glycol, facilitating ethanol formation through Pt and the abundant Lewis acid sites from Nb₂O₅.

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来源期刊

Applied Catalysis A: General 化学-环境科学

CiteScore

9.00

自引率

5.50%

发文量

415

审稿时长

24 days

期刊介绍： Applied Catalysis A: General publishes original papers on all aspects of catalysis of basic and practical interest to chemical scientists in both industrial and academic fields, with an emphasis onnew understanding of catalysts and catalytic reactions, new catalytic materials, new techniques, and new processes, especially those that have potential practical implications. Papers that report results of a thorough study or optimization of systems or processes that are well understood, widely studied, or minor variations of known ones are discouraged. Authors should include statements in a separate section "Justification for Publication" of how the manuscript fits the scope of the journal in the cover letter to the editors. Submissions without such justification will be rejected without review.