纳米钌沉积在二氧化钛上作为有效的光催化剂，用于合成环酮类燃料生物组分

IF 4.8 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2025-02-05 DOI:10.1016/j.apcata.2024.120066

Maciej Kapkowski , Daniel Lach , Tomasz Siudyga , Karina Kocot , Sonia Kotowicz , Mateusz Korzec , Piotr Bartczak , Katarzyna Balin , Maciej Zubko , Grzegorz Dercz , Izabela Matuła , Adrianna Chojnowska , Wojciech Kujawski , Guoqiang Li , Ewelina Kusiak-Nejman , Jaroslaw Polanski

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引用次数: 0

摘要

我们设计并合成了1-4 % Ru/TiO2体系，作为一种经济高效的多元醇酮缩化催化剂，无需额外添加酸性或有机共溶剂。采用EDXRF、XPS、XRD、TEM、UV-Vis/DR和TOF-SIMS等技术对催化剂进行了表征。2 % Ru/TiO2催化剂在光辅助下的模型反应中最活跃，TON值最高，为5272。这一结果强调了钌和二氧化钛结合实现的协同活化。更详细的分析揭示了一个双重机制，其中光催化氧空位形成在TiO2中起着至关重要的作用。这一机制涉及到反应物氧的连续空位供给。此外，我们还测试了选择的环酮作为95辛烷值汽油添加剂作为生物添加剂，符合现行法律法规，有助于减少碳足迹。

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Nano-Ru deposited on titanium dioxide as effective photocatalyst for synthesis of cyclic ketals for application as fuel biocomponents

We designed and synthesized the 1–4 % Ru/TiO₂ system as a cost-efficient acetalization catalyst for polyol-ketone reactants without the additional acidic or organic co-solvent addition. The catalyst was characterized using EDXRF, XPS, XRD, TEM, UV-Vis/DR and TOF-SIMS techniques. The 2 % Ru/TiO₂ catalyst proved to be the most active in a model reaction with photo assistance, exhibiting the highest TON value of 5272. This outcome underscores the synergistic activation achieved by combining ruthenium and titania. More detailed analysis reveals a dual mechanism, wherein photocatalytic oxygen vacancy formation in TiO₂ plays a crucial role. This mechanism involves the continuous vacancy feeding by the reactant oxygen. Additionally, we tested the selected cyclic ketals as the 95-octane gasoline additives as bio-additives, aligning with current legal regulations and contributing to a reduced carbon footprint.

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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.