Reforming of n-hexane over Pt-Tin silicalite-1

N. K. Mal*, M. Sasidharan, M. Matsukata, S. Sivasanker, A. V. Ramaswamy

*この研究の対応する著者

研究成果: Article査読

2 被引用数 (Scopus)

抄録

The catalytic behavior of Pt supported on non-acidic silicalite-1 (MFI structure) and on the stannosilicate, Sn-sil-1 molecular sieves in the aromatization of n-hexane is investigated. The influence of Pt content, temperature, space velocity, H2/n-hexane ratio and time on stream (TOS) on the n-hexane conversion, aromatic selectivity and aromatic yield are presented. Aromatics are the main products and this suggests that the aromatization proceeds via dehydrocyclization and/or hydrogenolysis, dehydrogenation to C2-C4 olefins followed by oligomerization inside the pores of the molecular sieve into cyclic intermediates in presence of hydrogen. The incorporation of Pt during the synthesis of the stannosilicate (Sn-sil-1) yields a more active catalyst (42 wt% aromatic selectivity) without any deactivation than when Pt is loaded by impregnation on Sn-sil-1 because catalyst deactivation associate with platinum outside the zeolite pores. A formation mechanism is proposed.

本文言語English
ページ(範囲)2403-2410
ページ数8
ジャーナルStudies in Surface Science and Catalysis
154 C
出版ステータスPublished - 2004 1 1

ASJC Scopus subject areas

  • 触媒
  • 凝縮系物理学
  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

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