Catalytic activity of ruthenium promoted Co-Mo/Al2O3 and infrared investigation of carbon monoxide and nitric oxide adsorption

✍ Scribed by Feng-Shou Xiao; Qin Xin; Xie-Xian Guo

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 921 KB
• Volume: 95
• Category: Article
• ISSN: 0926-860X
• DOI: 10.1016/0926-860x(93)80194-u

✦ Synopsis

The conversion of thiophene to hydrocarbons and of cyclohexene to cyclohexane over Ru-CO-MO/ Also, and Co-Mo/Al,Os as well as Ru/AlsOs catalysts has been performed, and it was found that the Ru-Co-Mo/AlxOs catalyst exhibited higher catalytic activities than the Co-Mo/Al,Os and Ru/Al,Os catalysts, showing that Ru had a remarkable promotion effect increasing HDS and HYD activities. IR studies on the reduced and sulfided Ru-Co-MO/A&O, showed that the characteristic band intensities of CO and NO adsorbed on Co and MO sites increased significantly and that the frequencies of these adspecies displayed a bathochromic shift, as compared with the Co-Mo/Al,Os. Furthermore, experimental TPD-IR data showed different desorption temperature and amount of adsorbed NO and CO adspecies between the reduced Ru-Co-MO/A&O, and the reduced Co-Mo/Al,Os. These results suggested that there was an interaction between Ru sites and MO (Co) sites in both reduced and sulfided Ru-Co-Mo/Al,Os catalysts, which was probably related to electron transference from Ru to Mo(Co) sites.