Influence of the Activation Method of Rh-Sn-B/γ-Al2O3 Catalysts on the Selective Hydrogenation of Oleic Acid to Oleyl Alcohol

IF 2.3 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Letters Pub Date : 2024-07-05 DOI:10.1007/s10562-024-04769-w

María A. Vicerich, María A. Sánchez, Cristhian Fonseca Benítez, Vanina A. Mazzieri

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Abstract

The selection of an appropriate preparation method is crucial to enhance catalytic performance and optimize the resources used in catalyst synthesis. Achieving improvements in conversion rates, desired product yields are essential for increasing interest and competitiveness in the industrial sector. This study aims to analyze the influence of the preparation method of Rh(1%)-Sn(4%)/γ-Al₂O₃ catalysts on the selective hydrogenation of oleic acid to oleyl alcohol. Results from temperature-programmed reduction (TPR), cyclohexane dehydrogenation (DHC), and X-ray photoelectron spectroscopy (XPS) clearly demonstrate that incorporating sodium borohydride in the preparation process results in a stronger interaction between Rh and Sn. The degree of interaction between Rh and Sn is significantly influenced by the catalyst preparation and activation method, with a strong interaction promoting selectivity towards the formation of oleyl alcohol.

Graphical Abstract

Abstract Image

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Rh-Sn-B/γ-Al2O3 催化剂活化方法对油酸选择性加氢转化为油醇的影响

选择合适的制备方法对于提高催化性能和优化催化剂合成过程中的资源使用至关重要。提高转化率和理想的产品收率对于增强工业领域的兴趣和竞争力至关重要。本研究旨在分析 Rh(1%)-Sn(4%)/γ-Al2O3 催化剂的制备方法对油酸选择性加氢制取油醇的影响。温度编程还原 (TPR)、环己烷脱氢 (DHC) 和 X 射线光电子能谱 (XPS) 的研究结果清楚地表明，在制备过程中加入硼氢化钠会增强 Rh 和 Sn 之间的相互作用。催化剂的制备和活化方法对 Rh 和 Sn 之间的相互作用程度有显著影响，强相互作用会提高生成油醇的选择性。

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来源期刊

Catalysis Letters 化学-物理化学

CiteScore

5.70

自引率

3.60%

发文量

327

审稿时长

1 months

期刊介绍： Catalysis Letters aim is the rapid publication of outstanding and high-impact original research articles in catalysis. The scope of the journal covers a broad range of topics in all fields of both applied and theoretical catalysis, including heterogeneous, homogeneous and biocatalysis. The high-quality original research articles published in Catalysis Letters are subject to rigorous peer review. Accepted papers are published online first and subsequently in print issues. All contributions must include a graphical abstract. Manuscripts should be written in English and the responsibility lies with the authors to ensure that they are grammatically and linguistically correct. Authors for whom English is not the working language are encouraged to consider using a professional language-editing service before submitting their manuscripts.