Inhibiting effects during the co-conversion of lauric acid and anisole over Ni and NiMo catalysts

IF 4.7 2区 化学 Q2 CHEMISTRY, PHYSICAL Applied Catalysis A: General Pub Date : 2024-07-18 DOI:10.1016/j.apcata.2024.119889
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Abstract

The co-hydroconversion of lauric acid and anisole was carried out over Ni and NiMo catalysts T=260 and 280 °C and pH2=40 bar. Ni/Al2O3 demonstrated a high activity in converting anisole to cyclohexane, but lauric acid conversion was suppressed over this catalyst. In the co-conversion of their mixture the phenolic had no effect on the conversion of the acid, but the latter prevented the cleavage of the C-O bond in both anisole and reaction intermediates. It was assumed that the successful conversion of anisole in its mixture with lauric acid required that a catalyst should provide the fast consumption of the acid component. Accordingly, NiMo/Al2O3 possessed a high activity in lauric acid conversion, and a high cyclohexane yield from anisole was observed after the complete consumption of the acid. The results of the present study can be useful for the rational design of a catalyst for the effective hydroconversion of bio-oil.

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镍和镍钼催化剂在月桂酸和苯甲醚共转化过程中的抑制作用
在镍和镍钼催化剂上进行了月桂酸和苯甲醚的共加氢转化,催化剂温度分别为 260 和 280 °C,pH2=40 bar。Ni/Al2O3 在将苯甲醚转化为环己烷方面表现出较高的活性,但在这种催化剂上月桂酸的转化受到抑制。在它们的混合物共同转化过程中,酚类对酸的转化没有影响,但后者阻止了苯甲醚和反应中间产物中 C-O 键的裂解。据推测,苯甲醚与月桂酸混合物的成功转化需要催化剂能快速消耗酸组分。因此,NiMo/Al2O3 在月桂酸转化过程中具有很高的活性,而且在酸完全消耗后,从苯甲醚中观察到了很高的环己烷产率。本研究的结果有助于合理设计催化剂,以有效实现生物油的加氢转化。
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来源期刊
Applied Catalysis A: General
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.
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