Highly active BEA catalyst for catalytic cracking of n-heptane

Ryosuke Nakao, Yoshihiro Kubota, Naonobu Katada, Norikazu Nishiyama, Kimio Kunimori, Keiichi Tomishige

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The catalytic cracking of n-heptane was carried out in a continuous-flow fixed-bed reactor at 773 K as a model reaction of FCC under the condition close to a practical one, including regeneration steps. The catalyst performance of homemade beta zeolites was compared with those of the commercial catalysts (BEA, USY, and ZSM-5). The order of initial activity was BEA(HTS) ≫ ZSM-5(Tosoh) > BEA (PQ) > BEA(Tosoh) > USY(Tosoh). The deactivation over BEA(HTS) was severe because of high activity, however, the activity was recovered almost completely by the regeneration process. Acid sites were formed effectively and the amount of acid sites was significantly large over BEA(HTS). The ratio of Brönsted acid sites/Lewis acid sites was much higher on BEA(HTS) than on commercial BEA zeolites. This character on BEA(HTS) could explain the cause of highly active BEA in the catalytic cracking of n-heptane.

Original languageEnglish
Pages (from-to)153-157
Number of pages5
JournalCatalysis Letters
Volume89
Issue number1-2
DOIs
Publication statusPublished - 2003 Jul 1
Externally publishedYes

Keywords

  • BEA zeolite
  • Catalytic cracking
  • Deactivation
  • Regeneration
  • n-Heptane

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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