α-Benzoinoxime에 의한 Molybdenum 침전물의 생성 특성

황두성; 정원명; 김연구; 이규일; 박진호; 박경배; 박소진; Doo Seong Hwang; Won Myoung Choung; Yeon Ku Kim; Kue Il Lee; Jin Ho Park; Kyoung Bae Park; So Jin Park

Journal of the Korean Industrial and Engineering Chemistry, Vol.11, No.3, 266-270, May, 2000

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α-Benzoinoxime에 의한 Molybdenum 침전물의 생성 특성

Formation Property of Molybdenum Precipitate by α-Benzoinoxime

황두성^†, 정원명, 김연구, 이규일, 박진호, 박경배, 박소진 ¹

한국원자력연구소, 대전 305-353
¹충남대학교 화학공학과, 대전 305-764

Doo Seong Hwang^†, Won Myoung Choung, Yeon Ku Kim, Kue Il Lee, Jin Ho Park, Kyoung Bae Park, and So Jin Park¹

Korea Atomic Energy Research Institute, Taejon 305-353, Korea
¹Department of Chemical Engineering, Chungnam National University, Taejon 305-764, Korea

E-mail:

초록

본 연구에서는 Mo을 α-benzoinoxime을 사용하여 침전반응시킬 때 생성되는 α-benoinoxime-Mo 침전물의 특성을 SEM, FTIR, TG/DTA와 XRD를 사용하여 조사하였다. 모의용액은 질산농도 1M, 50ppm Mo로 구성하였으며, 0.4 N NaOH에 용해된 2wc%의 α-benzoinoxime 용액을 첨가하여 침전물을 제조하였다. 생성된 침전물은 α-benzoinoxime-Mo 침전과 Mo의 침전율을 높여주기 위하여 과잉으로 첨가된 α-benzoinoxime의 재침전물로 구성되며 이 중 α-benzoinoxime-Mo 침전은 과산화수소를 첨가하지 않은 0.4 N NaOH 용액으로 5분 내에 용해되어 기존 공정을 개선할 수 있었다. FTIR과 TG-DTA 결과로부터 Mo과 α-benzoinoxime은 두 분자의 α-benzoinoxime과 한 분자의 MoO₂⁺² 이온이 반응하여 α-benzoinoxime-Mo 침전물을 생성하였음을 확인할 수 있었으며, α-benzoinoxime-Mo 침전물은 무정형으로 나타났다.

This study investigated the property of molybdenum precipitate formed with α-benzoinoxime by SEM, FTIR, TG-DTA, and XRD. The precipitate was produced by adding 2 wt%, α-benzoinoxime solution dissolved in 0.4 N NaOH to 1 M nitric acid solution containing 50 ppm molybdeum. The precipitate was composed of α-benzoinoxime-Mo precipitate and re-precipitate of α-benzoinoxime added excessively for increasing precipitation efficiency of molybdenum, α-benzoinoxime-Mo precipitate of these precipitates was dissolved in 0.4 N NaOH solution without hydrogen peroxide within 5 minutes, which proposed the possibility improving the existing process. As results of FTIR and TG-DTA, it was confirmed that α-benzoinoxime-Mo precipitate was formed by reaction of two α-benzoinoxime molecules and one MoO₂⁺². The form of α-benzoinoxime-Mo precipitate was amorphous.

Keywords:α-benzoinoxime;Mo;Tc;precipitation;dissolution

[References]

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Wu D, Landsberger S, Vandegrift GF, J. Radioanal. Nucl. Chem., 216(1), 101 (1997)
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[Referenced By]

[Related Articles]

[1] Langton MA, Trans. Am. Nucl. Soc., 72, 134 (1995)

[2] IAEA, "Fission Molybdenum for Medical Use," IAEA-TECDOC-515 (1989)

[3] Sameh AA, Hans JA, Radiochim. Acta, 41, 65 (1987)

[4] Cheng WL, Lee CS, Chen CC, Ting G, Radiochim. Acta, 47, 69 (1989)

[5] Iturbe JL, Appl. Radiat. Isot., 41(7), 693 (1990)

[6] Gupta AK, Williams ES, Aguwa A, Adsorption Ion Exchange, 78, 103 (1979)

[7] Sameh AA, Hans JA, Radiochim. Acta, 42, 65 (1987)

[8] Ejaz E, Mamoon AM, Qureshi MA, Appl. Radiat. Isto., 39, 1 (1988)

[9] Wei T, Cheng WL, Ting G, Solvent Extract. Ion Exchange, 2(3), 435 (1984)

[10] Sivaramakrihan CK, Rep. BARC-84 (1976)

[11] Arino H, Cosolito FJ, George KD, Thrnton AK, U.S. Patent, 3,940,318

[12] Cheng WL, Lee CS, Chen CC, Wang YM, Ting G, Appl. Radiat. Isto., 40(4), 315 (1989)

[13] Knowles H, Bur. Stds. J. Res., 9, 1 (1932)

[14] Jdid E, Blazy P, Ind. Miner. Mines. Carrier Tech., 2, 83 (1989)

[15] Wu D, Landsberger S, Vandegrift GF, J. Radioanal. Nucl. Chem., 216(1), 101 (1997)

[16] Colthup NB, Daly LH, Wiberley SE, "Introduction to Infrared and Raman Spectroscopy," 3rd ed., Academic Press, San Diego (1990)

[17] Nakamoto K, "Infrared and Raman Spectra of Inorganic and Coordination Compounds," 3rd ed., John Wiley & Sons, New York (1978)