한국재료학회지 (Korean Journal of Materials Research)

  • 제5권5호
  • /
  • Pages.620-624
  • /
  • 1995
  • /
  • 1225-0562(pISSN)
  • /
  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
권호 표지

Acid and Base Properties of Chemical-Treated Natural Zeolite

  • 발행 : 1995.08.01
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초록

To study the acid and base properties of chemical-treated natural zeolite, FT-IR analysis was performed by the adsorption of pyridne and pyrrole and thermo-gravimetric analysis was done by the adsorption of NH$_{3}$. These solid catalysts have two acid sites, which are related to the Bronsted and Lewis acid sites, respectively. HIC-treatment led to the increased acidity and the maintained basicity.Acidity of NaHO-treatment samples also increased with thr NaOH-treatment but basicity decreased. The p-xylene selectivity on the chemical-treatment zelite was higher than that on the untreated zeolite.

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참고문헌

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