Pt supported on Na+-containing mordenites and K+-containing L zeolites was applied to benzene hydrogenation in the presence of thiophene. The effects of pressure, temperature, and proton/alkali metal cation molar ratio on the catalytic properties were studied. Catalysts were characterized. Increasing the hydrogen partial pressure or total pressure significantly increased the benzene conversion in the presence of 50 ppm thiophene. Increasing the temperature also decreased the impact of 50 ppm thiophene upon benzene hydrogenation. There was an optimal proton/alkali metal cation molar ratio for an optimal sulfur resistance of the catalyst. There were no changes in Pt particle size after 2 hr of benzene hydrogenation in the presence of 50 ppm thiopene. Platinum supported on alkali exchanged MOR and L zeolites was more sulfur tolerant for benzene hydrogenation than platinum supported on the purely acidic one. The alkali metal cation stabilized the platinum particles inside the zeolite pores during benzene hydrogenation in the presence of thiophene.
|Title of host publication||Proceedings of the DGMK Conference "The Future Role of Aromatics in Refining and Petrochemistry"|
|Subtitle of host publication||October 13-15, 1999, Erlangen, Germany|
|Place of Publication||Erlangen|
|Publisher||Deutsche Wissens. Gesell. fur Erdoel, Erdgas und Kohle EV|
|Number of pages||8|
|Publication status||Published - 13 Oct 1999|
|Publisher||Deutsche Wissenschaftliche Gesellschaft für Erdöl, Erdgas und Kohle|