PlumX Metrics
Embed PlumX Metrics

Mesoporous silica–alumina modified by acid leaching as support of Pt catalysts in HDS of model compounds

Applied Catalysis B: Environmental, ISSN: 0926-3373, Vol: 100, Issue: 3, Page: 463-471
2010
  • 22
    Citations
  • 0
    Usage
  • 25
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    22
    • Citation Indexes
      22
  • Captures
    25

Article Description

The potential of mesoporous silica–alumina (MSA) modified by acid leaching as alternative support for Pt catalysts was studied in hydrodesulfurization (HDS) of thiophene and benzothiophene. The supports were characterized by N 2 adsorption, XRD, 27 AL MAS NMR, electron microscopy (SEM, HRTEM) and by activities in cyclohexene isomerization and cumene cracking. The composition of the catalysts and Pt dispersion were determined by ICP and H 2 or CO sorption, respectively. Progressive leaching of the parent MSA from 50% Al 2 O 3 to 11% Al 2 O 3 content led to increase of the BET surface area and exposition of strong acidity. This positively affected the activities of the reduced Pt catalysts in thiophene HDS. Deposition of 1.5 wt.% Pt on MSA (11% Al 2 O 3 ) by using Pt(NH 3 ) 4 (OH) 2 as precursor gave the best catalyst, several times more active in thiophene HDS than the weight equivalents of sulfided CoMo/Al 2 O 3 or reduced Pt/HY zeolite. In benzothiophene reaction, its activity was slightly above that of CoMo/Al 2 O 3 and about twofold compared to Pt/HY.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know