Imidazolium Hexafluorophosphate의 양이온이 HFP 수소화 반응용 Pd/C 촉매 제조에 미치는 영향

김창수; 유계상; Chang-Soo Kim; Kye Sang Yoo

Applied Chemistry for Engineering, Vol.25, No.3, 249-253, June, 2014

Influence of the Cation Parts of Imidazolium Hexafluorophosphate on Synthesis of Pd/C Particles as a HFP Hydrogenation Catalyst

김창수 , 유계상 ^{1, †}

한국과학기술연구원 청정에너지연구센터
¹서울과학기술대학교 화공생명공학과

Chang-Soo Kim , and Kye Sang Yoo^{1, †}

Clean Energy Research Center, KIST, Seaul 136-791, Korea
¹Department of Chemical & Biomolecular Engineering, Seoul National University of Science & Technology, Seoul 139-743, Korea

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초록

다양한 양이온을 가지는 imidazolium hexafluorophosphate를 이용하여 탄소담지 팔라듐 촉매를 제조하여 이를 hexafluoropropylene 수소화 반응에 사용하였다. 팔라듐의 입자형태는 사용된 이온성액체의 양이온에 영향을 받는 것이 관찰되었다. 이온성액체와 팔라듐 입자 사이의 입체적 안정화 영향으로 인하여 양이온 부분의 알킬 길이가 증가할수록 팔라듐입자는 구형에서 원통형으로 변하였다. 500 ℃에서 소성한 촉매 모두 동일한 결정구조를 형성하였다. 일정한 반응조건에서 양이온에 hexyl기를 가진 이온성액체로 합성한 촉매가 가장우수한 반응성을 보였다.

Palladium on carbon catalysts for hexafluoropropylene hydrogenation were prepared using imidazolium hexafluorophosphate with various cation parts. The morphology of palladium was relatively affected by the cation parts of the ionic liquid. With increasing alkyl chains of the ionic liquid cation, the shape of palladium particle changed from spherical to cylindrical due to the effect of steric stabilization. After calcination at 500 ℃, all catalysts possessed the comparable crystal structure. Under the identical reaction conditions, the catalyst prepared using the ionic liquid with hexyl chain in cation parts showed the most effective reactivity.

Keywords:Imidazolium Hexafluorophosphate;Hydrogenation;Pd/C particles

[References]

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Habas SE, Lee H, Radmilovic V, Somorjai GA, Yang P, Nat. Mater., 6(9), 692 (2007)
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Welton T, Chem. Rev., 99(8), 2071 (1999)
Avril K, Collier B, Method for preparing fluorine compounds, US patent, 0021849 A1 (2011)
Kim CS, Ahn BS, Tae H, Jeon SH, Yoo KS, Appl. Chem. Eng., 23(5), 510 (2012)
Kim CS, Yoo KS, Synthesis of Pd particles with various shapes by ionic liquids for HFP hydrogenation catalyst, Res. Chem. Intermed. (in press, Doi: 10.1007/s11164-014-1656-z).
Aiken III JD, Finke RG, J. Mol. Catal. A., 145, 1 (1999)

[Related Articles]

[1] Fernandez-Garcia M, Martinez-Arias A, Salamanca LN, Coronado JM, Anderson JA, Conesa JC, Soria J, J. Catal., 187(2), 474 (1999)

[2] Nishihata Y, Mizuki J, Akao T, Tanaka H, Uenishi M, Kimura M, Okamoto T, Hamada N, Nature, 418, 164 (2002)

[3] Thomas JM, Johnson BFG, Raja R, Sankar G, Midgley PA, Acc. Chem. Res., 36, 20 (2003)

[4] Schlapbach L, Zu¨ttel A, Nature, 414, 353 (2001)

[5] Habas SE, Lee H, Radmilovic V, Somorjai GA, Yang P, Nat. Mater., 6(9), 692 (2007)

[6] Bratlie KM, Lee H, Komvopoulos K, Yang P, Somorjai GA, Nano Lett., 7, 3097 (2007)

[7] Wang C, Daimon H, Onodera T, Koda T, Sun S, Angew. Chem. Int. Ed., 47, 3588 (2008)

[8] Wasserscheid P, Keim W, Angew. Chem. Int. Ed., 39, 3772 (2000)

[9] Welton T, Chem. Rev., 99(8), 2071 (1999)

[10] Avril K, Collier B, Method for preparing fluorine compounds, US patent, 0021849 A1 (2011)

[11] Kim CS, Ahn BS, Tae H, Jeon SH, Yoo KS, Appl. Chem. Eng., 23(5), 510 (2012)

[12] Kim CS, Yoo KS, Synthesis of Pd particles with various shapes by ionic liquids for HFP hydrogenation catalyst, Res. Chem. Intermed. (in press, Doi: 10.1007/s11164-014-1656-z).

[13] Aiken III JD, Finke RG, J. Mol. Catal. A., 145, 1 (1999)