Effects of preparation methods on Ru-based catalysts for CO hydrogenation to olefins

IF 4.7 2区化学 Q2 CHEMISTRY, PHYSICAL

Applied Catalysis A: General Pub Date : 2025-01-12 DOI:10.1016/j.apcata.2025.120117

Jiaqi Li , Xuan Zhou , Huachen Shen , Ruitao Li , Tiejun Lin , Yunlei An , Liangshu Zhong

引用次数: 0

Abstract

The influence of impregnation sequences on the structure and performance of the Ru-based catalysts for olefins synthesis from syngas via Fischer-Tropsch reaction (FTO) was investigated. Among the catalysts studied, Na-Ru/SiO₂ (Na was impregnated before Ru) exhibited the highest CO conversion (43.5 %) and olefins yield (33.9 %). In contrast, Ru-Na/SiO₂ (Ru was impregnated before Na) showed the lowest CO conversion (26.6 %) and olefins yield (19.8 %). Characterization analysis indicated that Na-Ru/SiO₂ exhibited higher Ru dispersion. In addition, the structural configuration of Na-Ru/SiO₂ was found to enhance CO adsorption capabilities to create a C*-rich localized chemical environment, thereby increasing catalytic activity and olefins production. This study demonstrates a straightforward and effective approach to optimize Ru utilization for the design of Ru-based FTO catalysts.

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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.