Synthesis of ZSM-type zeolites from rice husk ashes

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

研究成果: Conference article同行評審


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.

All Science Journal Classification (ASJC) codes

  • 環境工程
  • 廢物管理和處置


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