MCM-41 overgrown on y composite zeolite as support of Pd-Pt catalyst for hydrogenation of polyaromatic compounds

Haijuan Zhang, Xiangchun Meng, Yongdan Li, Y. S. Lin

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

A composite zoelite Y overgrown with a thin layer of mesoporous MCM-41 was prepared as the support of a sulfur-tolerant catalyst for aromatics reduction in diesel cut. This material is different from the mechanical mixture of the two zeolites in many aspects, that is, the FTIR spectra, appearance of particles, distribution of Si and Al, 29Si MAS NMR spectra, acid strength, and amount of acid sites on the surface. The composite was used as the support of a Pd-Pt catalyst for the hydrogenation of polyaromatic compounds, pyrene and naphthalene. Sulfur tolerance of the catalyst was investigated with naphthalene hydrogenation in the presence of thiophene and 4,6-dimethyldibenzothiophene. It was demonstrated that the introduction of mesopores enhances the activity of pyrene hydrogenation and the sulfur tolerance during naphthalene hydrogenation.

Original languageEnglish (US)
Pages (from-to)4186-4192
Number of pages7
JournalIndustrial and Engineering Chemistry Research
Volume46
Issue number12
DOIs
StatePublished - Jun 6 2007

Fingerprint

Zeolites
Multicarrier modulation
naphthalene
Catalyst supports
zeolite
Hydrogenation
Naphthalene
catalyst
Sulfur
sulfur
pyrene
Catalysts
Pyrene
Composite materials
tolerance
MAS
acid
Thiophenes
Acids
diesel

ASJC Scopus subject areas

  • Polymers and Plastics
  • Environmental Science(all)
  • Chemical Engineering (miscellaneous)

Cite this

MCM-41 overgrown on y composite zeolite as support of Pd-Pt catalyst for hydrogenation of polyaromatic compounds. / Zhang, Haijuan; Meng, Xiangchun; Li, Yongdan; Lin, Y. S.

In: Industrial and Engineering Chemistry Research, Vol. 46, No. 12, 06.06.2007, p. 4186-4192.

Research output: Contribution to journalArticle

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