Selective hydrogenation of hydrogen peroxide in the epoxidation effluent of the HPPO process

作者：Blanco Brieva Gema; Pilar de Frutos Escrig M; Martin Hilario; Campos Martin Jose M^*; Fierro Jose L G

来源：Catalysis Communications, 2012, 26: 83-87.

DOI：10.1016/j.catcom.2012.04.026

• Epoxidation
• Hydrogen peroxide
• Selective hydrogenation
• HPPO

This work describes selective H2O2 hydrogenation in the exit stream of the epoxidation reactor employed in the Hydrogen Peroxide-Propylene Oxide (HPPO) process. Pd/Al2O3 and Pt/Al2O3 catalysts were employed for this purpose. The effect of the reaction temperature, catalyst amount and hydrogen partial pressure on catalyst performance were investigated. It was found that the Pt catalyst is much more active than its Pd counterpart. Under optimized reaction conditions, the hydrogen peroxide present in the exit stream can be completely hydrogenated with the Pt catalyst with a reaction time of no longer than 20 min and an almost negligible amount of byproducts derived from propylene oxide.

• 出版日期2012-9-5