Articles & Issues
- Conflict of Interest
- In relation to this article, we declare that there is no conflict of interest.
-
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright © KIChE. All rights reserved.
All issues
X-선 회절로부터 탄산칼슘 결정형태의 정량분석
Quantitative Analysis of Calcium Carbonate Polymorphs by X-Ray Diffraction
HWAHAK KONGHAK, August 1998, 36(4), 543-547(5), NONE
Download PDF
Abstract
Calcite, vaterite 그리고 aragonite가 혼합되어 있는 탄산칼슘을 X선 회절로 분석하였다. 이것은 2성분 혼합물에서 X-선 회절의 특성피크의 높이로부터 표준곡선을 작성하여 각각의 조성을 구하였다. 즉, calcite-vaterite 혼합물에서, vaterite의 양은 calcite의 특성피크인 2θ값이 29.32。의 높이에 대한 vaterite의 특성피크인 2θ값이 24.81。, 27.09。 그리고 32.75。 특성 피크의 높이비로부터 구하였으며, 이 식의 실험오차는 약 3%이다. 그리고 calcite-aragonite의 혼합물에서 aragonite의 양은 calcite의 특성피크인 2θ값이 29.32。의 높이에 대한 aragonite의 특성피크인 2θ값이 26.06。, 38.40。 그리고 45.81。 특성 피크의 높이비로부터 구하였으며, 이 식의 실험오차는 약 3%이다. 위의 표준곡선으로부터 3성분의 혼합물의 조성비를 계산할 수가 있다. 합성된 순수한 입자의 혼합물을 위의 방법으로 계산한 결과 실험치와 계산치가 아주 잘 일치하였다.
Samples of calcium carbonate were analyzed by X-ray diffraction to determine the polymorphic compositions of calcite, vaterite and aragonite. Standard curves were taken from the peak heights of binary polymorphs mixtures. The content of vaterite in the mixture of calcite and vaterite was obtained from the ratio of the peak heights at 29.32。 and 24.81。, 27.09。 and 32.75。. In this work the experimental error is estimated at about 3%. For the binary mixture of calcite and aragonite the content of aragonite was determined from the ratio of the peak height of calcite, 29.32。, to the peak heights of aragonite, 26.06。, 38.40。, and 45.81。. The experimental error is estimated at about 3%. Compositions of three polymorphs were estimated from the standard curves. The results from the experiments for the pure synthetic components gave excellent agreement with the calculations.
Keywords
References
Kojima Y, Endo N, Yasue T, Arai T, J. Ceram. Soc. Jpn., 103, 1282 (1995)
Xyla AG, Koutsoukos PG, J. Chem. Soc.-Faraday Trans., 85(10), 3165 (1989)
Kojima Y, Sadotomo A, Yasue T, Arai T, J. Ceram. Soc. Jpn., 100, 1145 (1992)
Mann S, Heywood BR, Rajain S, Birchall JD, Nature, 334, 692 (1988)
Xyla A, Koutsoukos P, J. Chem. Soc.-Faraday Trans., 83, 1477 (1987)
Lyu SG, Sur GS, Kang SH, HWAHAK KONGHAK, 35(2), 186 (1997)
Lyu SG, Sur GS, Polym.(Korea), 20(5), 870 (1996)
Lyu SG, Bae KS, Sur GS, J. Korean Ind. Eng. Chem., 8(5), 771 (1997)
Lyu SG, Ryu SO, Park YH, Sur GS, HWAHAK KONGHAK, 36(2), 262 (1998)
Rao MS, Bull. Chem. Soc. Jpn., 46, 1414 (1973)
Hakanen E, Koskikallio J, J. Finn. Chem. Lett., 3, 34 (1982)
Kawaguchi H, Hirai H, Sakai K, Sera S, Nakajima T, Ebisawa Y, Koyama K, Colloid Polym. Sci., 270, 1176 (1992)
Nakamae K, Nishiyama S, Yamashiro J, Fujimura Y, Urano A, Tozaki Y, Matsumoto T, Nihon-Settyakukyoukaishi, 21, 414 (1985)
JCPDS, "Powder Diffraction File, Inorganic," No. 5-0586, 24-30, 5-0453 (1975)
Xyla AG, Koutsoukos PG, J. Chem. Soc.-Faraday Trans., 85(10), 3165 (1989)
Kojima Y, Sadotomo A, Yasue T, Arai T, J. Ceram. Soc. Jpn., 100, 1145 (1992)
Mann S, Heywood BR, Rajain S, Birchall JD, Nature, 334, 692 (1988)
Xyla A, Koutsoukos P, J. Chem. Soc.-Faraday Trans., 83, 1477 (1987)
Lyu SG, Sur GS, Kang SH, HWAHAK KONGHAK, 35(2), 186 (1997)
Lyu SG, Sur GS, Polym.(Korea), 20(5), 870 (1996)
Lyu SG, Bae KS, Sur GS, J. Korean Ind. Eng. Chem., 8(5), 771 (1997)
Lyu SG, Ryu SO, Park YH, Sur GS, HWAHAK KONGHAK, 36(2), 262 (1998)
Rao MS, Bull. Chem. Soc. Jpn., 46, 1414 (1973)
Hakanen E, Koskikallio J, J. Finn. Chem. Lett., 3, 34 (1982)
Kawaguchi H, Hirai H, Sakai K, Sera S, Nakajima T, Ebisawa Y, Koyama K, Colloid Polym. Sci., 270, 1176 (1992)
Nakamae K, Nishiyama S, Yamashiro J, Fujimura Y, Urano A, Tozaki Y, Matsumoto T, Nihon-Settyakukyoukaishi, 21, 414 (1985)
JCPDS, "Powder Diffraction File, Inorganic," No. 5-0586, 24-30, 5-0453 (1975)
