Abstract
This study assessed the Ru-Sn catalyst’s performance in benzoic acid hydrogenation to benzyl alcohol, highlighting the optimal Sn/Ruratio of 5 for peak activity in a Ru-Sn/Al2O3 system. TiO2 support outperformed Al2O3 and SiO2, achieving a 72% conversion rate and 83% selectivity towards benzyl alcohol. Increasing the reduction temperature enhanced catalyst activity and selectivity. While Ru remained stable, tin showed leaching; this decreased with reuse of catalyst and higher catalyst reduction temperatures. Notably, TiO2 support minimized Sn leaching and benzoic acid’s acidity did not induce Sn leaching. The findings provide key insights into optimizing the Ru-Sn catalyst for hydrogenation of benzoic acid.
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