Hierarchically porous ZSM-5 synthesized by nonionic- and cationic-templating routes and their catalytic activity in liquid-phase esterification

R. R. Mukti, Y. Kamimura, W. Chaikittisilp, H. Hirahara, Atsushi Shimojima, M. Ogura, K. K. Cheralathan, S. P. Elangovan, K. Itabashi, T. Okubo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Hierarchically porous MFI zeolites (ZSM-5) have been synthesized by hydrothermal treatment in the presence of trialkoxysilylated-derivatives of nonionic poly(oxyethylene) alkyl ether or alkyl quaternary ammonium cation as mesopore-generating agent, along with tetrapropylammonium cation as zeolite structure-directing agent. Powder X-ray diffraction revealed that zeolites have been crystallized, and scanning electron microscopy showed rugged surface morphology that was quite different from conventional ZSM-5. The mesoporosity was confirmed by nitrogen adsorption-desorption measurement showing type IV isotherms with narrow distribution of mesopore diameters. The catalytic activity of these mesoporous ZSM-5 was tested in liquid-phase esterification of benzyl alcohol with hexanoic acid. The conversion of benzyl alcohol on mesoporous ZSM-5 prepared via cationic-templating route was almost 100%, being much higher than on mesoporous ZSM-5 prepared with silylated nonionic surfactant as well as on conventional ZSM-5 with no mesopores. The presence of Brønsted acid sites, together with the mesopores, was responsible for this catalytic conversion, as confirmed by pyridine adsorption monitored by in situ infrared and 27Al magic angle spinning nuclear magnetic resonance spectroscopy.

Original languageEnglish
Pages (from-to)59-72
Number of pages14
JournalITB Journal of Science
Volume43 A
Issue number1
DOIs
Publication statusPublished - 2011
Externally publishedYes

Fingerprint

Zeolites
zeolites
benzyl alcohol
Esterification
esterification
Alcohol
catalytic activity
Adsorption
Benzyl Alcohol
alcohol
Catalyst activity
cations
adsorption
liquid phases
alcohols
cation
routes
Liquid
hexanoic acid
nonionic surfactants

Keywords

  • Catalysis
  • Esterification
  • Hierarchical pores
  • Mesoporous zeolite
  • MFI zeolite
  • Pyridine adsorption

ASJC Scopus subject areas

  • General

Cite this

Hierarchically porous ZSM-5 synthesized by nonionic- and cationic-templating routes and their catalytic activity in liquid-phase esterification. / Mukti, R. R.; Kamimura, Y.; Chaikittisilp, W.; Hirahara, H.; Shimojima, Atsushi; Ogura, M.; Cheralathan, K. K.; Elangovan, S. P.; Itabashi, K.; Okubo, T.

In: ITB Journal of Science, Vol. 43 A, No. 1, 2011, p. 59-72.

Research output: Contribution to journalArticle

Mukti, RR, Kamimura, Y, Chaikittisilp, W, Hirahara, H, Shimojima, A, Ogura, M, Cheralathan, KK, Elangovan, SP, Itabashi, K & Okubo, T 2011, 'Hierarchically porous ZSM-5 synthesized by nonionic- and cationic-templating routes and their catalytic activity in liquid-phase esterification', ITB Journal of Science, vol. 43 A, no. 1, pp. 59-72. https://doi.org/10.5614/itbj.sci.2011.43.1.6
Mukti, R. R. ; Kamimura, Y. ; Chaikittisilp, W. ; Hirahara, H. ; Shimojima, Atsushi ; Ogura, M. ; Cheralathan, K. K. ; Elangovan, S. P. ; Itabashi, K. ; Okubo, T. / Hierarchically porous ZSM-5 synthesized by nonionic- and cationic-templating routes and their catalytic activity in liquid-phase esterification. In: ITB Journal of Science. 2011 ; Vol. 43 A, No. 1. pp. 59-72.
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AU - Shimojima, Atsushi

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