합성방법에 따른 K2Ti4O9 섬유의 형상변화

정경택; 문제권; 설용건; 오원진

HWAHAK KONGHAK, Vol.34, No.4, 477-481, August, 1996

Export Citation

합성방법에 따른 K₂Ti₄O₉섬유의 형상변화

Effects of Synthetic Methods on the Morphological Changes of K₂Ti₄O₉ Fiber

정경택, 문제권, 설용건, 오원진

초록

용융법과 졸겔법을 이용하여 4티탄산칼륨(K₂Ti₄O₉)을 합성하여 형상 및 표면적 변화를 연구하엿다. 용융법으로 생성한 K₂Ti₄O₉보다 졸겔법의 경우 더 길고 얇은 섬유상인 길이 7-10μm, L/D가 40-50의 K₂Ti₄O₉가 성장되었다. 초임계 건조를 적용한 졸겔법으로부터 초임계 건조 후 섬유상의 중간체가 형성이 되었고 이를 다시 소성시킴에 따라 길이 0.5-1μm, L/D는 10-300의 K₂Ti₄O₉섬유를 얻을 수 있었다. 표면적은 초임계 건조를 행한 졸겔법의 경우 가장 큰 20-25m²/g를 나타내었다. 형성된 K₂Ti₄O₉의 형태와 표면적은 합성방법과 조건에 영향을 받는 것으로 나타났다.

Potassium tetratitanate(K₂Ti₄O₉) was synthesized by melting method and sol-gel method. Changes of morphology and surface area of K₂Ti₄O₉were also investigated. In sol- gel method, K₂Ti₄O₉ fiber was formed with 7-10 μm in length and L/D was 40-50 which is higher than that of melting method. Intermediate phase was obtained by sol-gel method adopted with supercritical drying. After calcination of the intermediate phase, K₂Ti₄O₉fibers were formed with 0.5-1 μm in length and L/D was 10-300, which is thinner and shorter than that of melting and sol-gel method. By using sol-gel method adopted supercritical drying, the highest surface area of 20-25 m²/g was obtained. The morphology and surface area of K₂Ti₄O₉were affected by synthetic methods and conditions.

Keywords:K₂Ti₄O₉ Fiber;Morphological Change;Sol-gel;Supercritical Drying;Radioactive Waste

[References]

Jung KT, Shul YG, Hong WM, J. Chem. Ind. Tech., 8(3), 33 (1990)
Fujiki Y, Izumi F, Yogyo-Kyokai-Shi, 85(4), 155 (1977)
Fujiki Y, Komatsu Y, Ohta N, Chem. Lett., 26, 1023 (1980)
Muto F, Nakagomi T, Taks S, Yogyo-Kyokai-Shi, 86(19), 443 (1978)
Komatsu Y, Fujiki Y, Sasaki T, Japan Analist Sect E31, E225 (1982)
Wenzel J, J. Non-Cryst. Solids, 73, 693 (1985)
Dislieh H, Angew. Chem.-Int. Edit., 10, 363 (1971)
Yoldas BE, J. Mater. Sci., 21, 1087 (1986)
Param HT, Arion JH, Kelvin DL, J. Mater. Lett., 3(9), 363 (1986)
Lee CT, Kim SW, Lee JS, Kim YM, Kwon KT, J. Korean Ind. Eng. Chem., 5(3), 478 (1994)
Jung KT, Shul YG, J. of the Eng. Research Institute, Yonsei Univ., 26(41), 2 (1994)
Chi CH, Sand LB, Nature, 304, 255 (1983)
정경택, 문제권, 설용건, 오원진, '95 추계 화학공학회 발표, 1293 (1995)

[Referenced By]

[1] Jung KT, Shul YG, Hong WM, J. Chem. Ind. Tech., 8(3), 33 (1990)

[2] Fujiki Y, Izumi F, Yogyo-Kyokai-Shi, 85(4), 155 (1977)

[3] Fujiki Y, Komatsu Y, Ohta N, Chem. Lett., 26, 1023 (1980)

[4] Muto F, Nakagomi T, Taks S, Yogyo-Kyokai-Shi, 86(19), 443 (1978)

[5] Komatsu Y, Fujiki Y, Sasaki T, Japan Analist Sect E31, E225 (1982)

[6] Wenzel J, J. Non-Cryst. Solids, 73, 693 (1985)

[7] Dislieh H, Angew. Chem.-Int. Edit., 10, 363 (1971)

[8] Yoldas BE, J. Mater. Sci., 21, 1087 (1986)

[9] Param HT, Arion JH, Kelvin DL, J. Mater. Lett., 3(9), 363 (1986)

[10] Lee CT, Kim SW, Lee JS, Kim YM, Kwon KT, J. Korean Ind. Eng. Chem., 5(3), 478 (1994)

[11] Jung KT, Shul YG, J. of the Eng. Research Institute, Yonsei Univ., 26(41), 2 (1994)

[12] Chi CH, Sand LB, Nature, 304, 255 (1983)

[13] 정경택, 문제권, 설용건, 오원진, '95 추계 화학공학회 발표, 1293 (1995)