NDLI: Enhancing tetralin hydrogenation activity and sulphur-tolerance of Pt/MCM-41 catalyst with Al(NO3)3, AlCl3 and Al(CH3)3

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Catalysis Science & Technology Vol - 4 Issue - 6

Catalysis Science & Technology Vol - 4 Issue - 5

Catalysis Science & Technology Vol - 4 Issue - 4

Catalysis Science & Technology Vol - 4 Issue - 3

Catalysis Science & Technology Vol - 4 Issue - 2

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Catalysis Science & Technology Vol -1

Enhancing tetralin hydrogenation activity and sulphur-tolerance of Pt/MCM-41 catalyst with Al(NO₃)₃, AlCl₃ and Al(CH₃)₃

Content Provider	Royal Society of Chemistry (RSC)
Author	Li, Guozhu Luo, Mingjian Wang, Li Zhang, Xiangwen Jiang, Tao Wang, Qingfa
Copyright Year	2014
Abstract	High efficiency and sulfur-tolerant Pt–Al/MCM-41 catalysts were prepared with Al(NO3)3, AlCl3 and Al(CH3)3 as promoters. The highest tetralin conversion and the best sulfur-tolerance were achieved on the Al(CH3)3-promoted catalyst. The pseudo first-order rate constants of this catalyst for tetralin hydrogenation are about 2–5 and 8–10 times as high as that of the Al-free one under sulfur-free and sulfur-containing conditions, respectively. AlCl3 also improves the catalytic activity and sulfur-tolerance considerably while Al(NO3)3 has certain promoting effects on sulfur-tolerance. These promoting effects can be ascribed to (i) the anchor and isolation effects improving the platinum dispersion which benefits tetralin hydrogenation and sulfur-tolerance. (ii) The electron-withdrawing effect is in the order Al(NO3)3 > AlCl3 > Al(CH3)3, resulting in a similarly electron deficient Ptδ+ order of the corresponding catalysts. The sulfur-tolerance is in favour of electron deficient Ptδ+, though the opposite of this is true for the tetralin hydrogenation. (iii) The acid sites and especially the hydroxyl sites, provide additional active sites and spillover hydrogen which also contribute to the tetralin hydrogenation and sulfur-tolerance of the catalysts.
Starting Page	2081
Ending Page	2090
Page Count	10
File Format	HTM / HTML PDF
ISSN	20444753
Volume Number	4
Issue Number	7
Journal	Catalysis Science & Technology
DOI	10.1039/c4cy00108g
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Tetralin Acid Hydroxy group Aluminium chloride Al Hydrogenation
Content Type	Text
Resource Type	Article
Subject	Catalysis

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