| Ru-Zn catalysts were prepared by a precipitation method, and their structure and physico-chemical properties were characterized by SEM, XRD and TEM. The influence of additives (i.e., polyethylene glycol, polyvinylpyrrolidone) on hydrogenation performance was investigated. The results showed that the catalytic performance of Ru-Zn catalyst correlated to the additives used in the preparation process. It was found that the benzene conversion and cyclohexene selectivity were 42% and 82.3%, respectively for the Ru-Zn catalyst prepared with polyethylene glycol. After 5 cycles, the Ru-Zn catalyst still has above 32% of cyclohexene yield. |
