Synthesis of ZSM-type zeolites from rice husk ashes

Kuen Song Lin, Hong-Paul Wang, M. C. Li, L. K. Huang, Chun Yin Hwang, Y. J. Huang

Research output: Contribution to journalConference articlepeer-review

Abstract

High crystallinity (99%+) zeolites ZSM-5 and ZSM-48 synthesized from a reaction mixtures containing a silica source from ashes of rice husk gasification were investigated. XRD data indicates ZSM-5 and ZSM-48 with a high crystallinity can be obtained at a 48-hour crystallization time in the high pressure autoclave at 443 K. Experimentally, methanol conversion over the synthesized ZSM-5 and ZSM-48 has a high selectivity for aromatics and aliphatics, respectively. Diffuse reflectance infrared spectra reveal that benzene and pyridine molecules adsorb preferentially on the most energetic (Bronsted acid) sites first. The adsorbed benzene molecule is only slightly perturb from the D6h selection rules for the free molecule.

Original languageEnglish
JournalProceedings of the International Conference on Solid Waste Technology and Management
Volume1
Publication statusPublished - 1997 Dec 1
EventProceedings of the 1997 13th International Conference on Solid Waste Technology and Management. Part 1 (of 2) - Philadelphia, PA, USA
Duration: 1997 Nov 161997 Nov 19

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Waste Management and Disposal

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