알칼리금속을 이용한 팽창흑연의 제조방법과 흡유특성

오원춘; Won Chun Oh

Journal of the Korean Industrial and Engineering Chemistry, Vol.14, No.8, 1033-1037, December, 2003

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알칼리금속을 이용한 팽창흑연의 제조방법과 흡유특성

Preparation Method and Oil Sorption Properties of Exfoliated Graphite using Alkali Metal

오원춘^†

한서대학교 화학과, 충남 356-820

Won Chun Oh^†

Department of Chemistry, Hanseo University, Chungnam 356-820, Korea

E-mail:

초록

리튬이 삽입된 흑연 층간화합물로부터 팽창흑연의 새로운 제조방법과 응용에 대하여 열처리 온도에 대한 팽창화 부피, 시트(sheet)상 흑연의 기계적 특성 및 원유의 흡유량 등을 연구하였다. 생성물의 팽창 부피는 Li 양과 열처리 온도의 증가와 함께 증가함을 보였다. 팽창흑연의 부피와 pH 농도등의 두 가지 중요한 요소는 시트(sheet) 생성물의 품질과 기계적 특성에 영향을 주었다. 뿐만 아니라 여러 가지 Li 양과 제조 온도에 따른 팽창흑연에 원유의 흡착거동이 역시 연구되었다. 이들 연구 결과로부터, Li₃₀-EG850과 Li₃₀-EG900 팽창흑연의 최대 흡유량은 팽창흑연 1 g당 원유 69 ~ 81 g으로 상당히 높게 나타났다. 마지막으로, 시간에 의존하여 Li₃₀-EG의 최대 흡유량은 열처리 온도와 관련하여 흡유 시간의 증가와 함께 증가하였다.

New preparation method and application of exfoliated graphite from Li-intercalated graphite were investigated to the expanded volumes by heat treated temperature, mechanical properties of sheet and sorption capacity of crude oil. It seems that the expanded volumes of the products would be increased with increasing of Li contents and heat treated temperatures. The quality and mechanical properties of the sheet products were influenced by two important factors of pH concentration and expanded volume of the exfoliated graphite. In addition to, the sorption behaviors of crude oil into exfoliated graphites with different Li contents and preparation temperatures were also studied. From these results, the maximum sorption capacities of an exfoliated graphhite with Li₃₀-EG850 and Li₃₀-EG900 were found to be surprisingly high, 60 ~ 81 g of crude oil per 1 g of exfoliated graphite. Finally, the maximum sorption capacity of the Li₃₀-EG depending on time would be increased with increasing of sorption times related to heat treated temperatures.

Keywords:graphite sheet;exfoliated graphite;oil absorbent;high porous graphite;Li-graphite

[References]

Toyoda M, Inagaki M, Carbon, 38, 199 (2000)
Oh WC, Carbon Sci., 2(1), 62 (2001)
Xiling C, Kemin S, Jihui L, Linpeng L, Carbon, 34(12), 1599 (1996)
Oh WC, Lim CS, Auh KH, Ko YS, J. Korean Cryst. Growth Cryst. Technol., 8(1), 83 (1998)
Oh WC, Kim BS, Bull. Korean Chem. Soc., 21(1), 101 (2000)
JIS R7201 (1979)
JIS R7202 (1979)
JIS R7212 (1979)
JIS R7222 (1979)
Toyoda M, Aizawa J, Inagaki M, 日本化學會誌, 8, 563 (1998)
Toyoda M, Moriya K, Aizawa J, Inagaki M, 日本化學會誌, 3, 193 (1999)
Kulbachinskii VA, Ionov SG, , Avdeev VV, Brandt NB, Lapin SA, Mandrea GA, Kuzmin IV, DeVisser A, J. Phys. Chem. Solids, 57, 893 (1996)
Gu JL, Leng Y, Gao Y, Liu H, Kang F, Wanei S, Carbon, 40, 2169 (2002)
Celzard A, Schneider S, Mareche JF, Carbon, 40, 2185 (2002)

[Referenced By]

[1] Toyoda M, Inagaki M, Carbon, 38, 199 (2000)

[2] Oh WC, Carbon Sci., 2(1), 62 (2001)

[3] Xiling C, Kemin S, Jihui L, Linpeng L, Carbon, 34(12), 1599 (1996)

[4] Oh WC, Lim CS, Auh KH, Ko YS, J. Korean Cryst. Growth Cryst. Technol., 8(1), 83 (1998)

[5] Oh WC, Kim BS, Bull. Korean Chem. Soc., 21(1), 101 (2000)

[6] JIS R7201 (1979)

[7] JIS R7202 (1979)

[8] JIS R7212 (1979)

[9] JIS R7222 (1979)

[10] Toyoda M, Aizawa J, Inagaki M, 日本化學會誌, 8, 563 (1998)

[11] Toyoda M, Moriya K, Aizawa J, Inagaki M, 日本化學會誌, 3, 193 (1999)

[12] Kulbachinskii VA, Ionov SG, , Avdeev VV, Brandt NB, Lapin SA, Mandrea GA, Kuzmin IV, DeVisser A, J. Phys. Chem. Solids, 57, 893 (1996)

[13] Gu JL, Leng Y, Gao Y, Liu H, Kang F, Wanei S, Carbon, 40, 2169 (2002)

[14] Celzard A, Schneider S, Mareche JF, Carbon, 40, 2185 (2002)