Discrimination of the roles of CdSO4 and ZnSO4 in liquid phase hydrogenation of benzene to cyclohexene

CdSO4 and ZnSO4 as co-modifiers of RuLa/SBA-15 lead to improved catalysts for the partial hydrogenation of benzene to cyclohexene. Based on the experimental results and theoretical calculations, it is shown that CdSO4 acts as surface modification, suppressing more the adsorption of cyclohexene than that of benzene, while the function of ZnSO4 is mainly the stabilization of cyclohexene in the liquid phase, accelerating the desorption as well as hindering the re-adsorption of cyclohexene.

Graphical abstractCdSO4 and ZnSO4 act as co-modifiers for RuLa/SBA-15 catalyst to enhance the selectivity in the partial hydrogenation of benzene to cyclohexene suppressing re-adsorption and stabilizing cyclohexene, respectively.Figure optionsDownload full-size imageDownload high-quality image (75 K)Download as PowerPoint slide