Comparison of carbon- and alumina-supported Mo, CoMo and NiMo catalysts in parallel hydrodenitrogenation and hydrodesulphurization

✍ Scribed by Zdeněk Vít

• Book ID: 103091310
• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 338 KB
• Volume: 72
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(93)90383-d

✦ Synopsis

The effect of support (alumina, active carbon) and promoter (Co, Ni) on activity and selectivity of MO catalysts was compared in parallel hydrodenitrogenation-hydrodesulphurization (HDN-HDS) of pyridine and thiophene at 320°C and 2MPa of hydrogen pressure. Two commercial CoMo/alumina and NiMo/alumina catalysts were included for comparison. The undesirable formation of piperidine was much lower on carbon-supported and unpromoted MO catalyst than on alumina-supported and Co-or Ni-promoted MO catalyst. Irrespective of the type of support, the presence of Co or Ni accelerated mainly the HDS reaction; the unpromoted MO catalysts had therefore better HDN/HDS selectivity than the CoMo and NiMo catalysts.