한국토양비료학회지 (Korean Journal of Soil Science and Fertilizer)

  • 제46권2호
  • /
  • Pages.87-91
  • /
  • 2013
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  • 0367-6315(pISSN)
  • /
  • 2288-2162(eISSN)
한국토양비료학회 (Korean Society of Soil Science and Fertilizer)
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Partially Dehydrated Fully Zn2+-exchanged Zeolite Y (FAU, Si/Al = 1.70) and Its Structure

  • Seo, Sung Man (Department of Applied Chemistry, Andong National University) ;
  • Kim, Young Hun (Department of Environmental Engineering, Andong National University) ;
  • Lee, Seok Hee (Department of Science Education, Busan National University of Education) ;
  • Lim, Woo Taik (Department of Applied Chemistry, Andong National University)
  • 투고 : 2013.02.28
  • 심사 : 2013.04.10
  • 발행 : 2013.04.30
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초록

The crystal structure of partially dehydrated fully $Zn^{2+}$-exchanged zeolite Y was determined by X-ray diffraction techniques in the cubic space group $Fd\bar{3}m$ at 294(1) K and refined to the final error indices $R_1/wR_2$ = 0.035/0.119 for $|Zn_{35.5}(H_2O)_{13}|[Si_{121}Al_{71}O_{384}]$-FAU. About 35.5 $Zn^{2+}$ ions per unit cell are found at six distinct positions; sites I, I', a second I', II', II, and a second II. In sodalite cavities, the 11 water molecules coordinate to Zn(I'b) and/or Zn(II') ions; each of two $H_2O$ bonds to a Zn(IIb) in supercages. Two different $Zn^{2+}$ positions near 6-oxygen ring are due to their Si-Al ordering in tetrahedral site by Si/Al ratio leading to the different kinds of 6-rings.

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참고문헌

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