Skeletal isomerization of tetradecane catalyzed by TON-type zeolites with a fragmented core-shell structure

Masaki Okamoto, Lili Huang, Midori Yamano, Sayuri Sawayama, Yohei Nishimura

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

TON-type zeolites with a core-shell structure were synthesized by crystal overgrowth of an aluminum-free TON-type zeolite on an aluminum-containing TON-type zeolite in the presence of fluoride ion, which was used as a mineralizing reagent to restrain the formation of defects. The core-shell structured zeolite showed greater selectivity for skeletal isomerization in tetradecane hydroisomerization because the acid sites on the external surface of needle-shaped crystals were passivated to inhibit cracking. Breaking the needle-shaped crystals of the core-shell structure to create shorter crystal pieces effectively enhanced the catalytic activity and selectivity for isomerization because new pore entrances were formed.

Original languageEnglish
Pages (from-to)122-128
Number of pages7
JournalApplied Catalysis A: General
Volume455
DOIs
Publication statusPublished - 2013 Mar 30
Externally publishedYes

Keywords

  • Core-shell structure
  • Isomerization
  • Passivation
  • TON-type zeolite

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

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