바나듐산화물 전극상에서 1-부텐의 산화반응 연구

박승두; 이학영; 홍석인

Journal of the Korean Industrial and Engineering Chemistry, Vol.9, No.4, 523-528, August, 1998

Export Citation

바나듐산화물 전극상에서 1-부텐의 산화반응 연구

A Study on 1-Butene Oxidation over Vanadium Oxide Electrode

박승두, 이학영, 홍석인

초록

본 연구에서는 고체전해셀 내에서 작업전극으로 사용된 V₂O₅의 전기화학적 특성을 알아보기 위해 YSZ를 고체전해질로 사용하여 전기화학셀(1-Butene+O₂, V₂O₅｜YSZ｜Ag,O₂)을 구성하였다. 상대전극인 Ag는 소성에 따라 sintering이 일어나고 3μm이상의 기공을 갖는 구조를 얻었다. 작업전극은 소성조건에 따라 부분산화반응에 영향을 주는 (010)면이 발생되었다. V₂O₅의 1-부텐에 대한 주요생성물은 부타디엔이었고 SEP (solid electrolyte potentiometry) 기술을 이용하여 작업전극상에 흡착된 화학종의 화학포텐셜을 측정하였다. 가스조성에 따른 개로전위 (OCV; open circuit voltage)를 측정하여 표면 산소종에 혼합전위의 발생을 확인하였다.

The electrochemical characteristics of V₂O₅ as working electrode were studied in the cell (1-butene+O₂, V₂O₅ |YSZ| Ag, O₂) with a YSZ solid electrolyte. The sintering of Ag as a counter electrode was occurred after calcination, and the structure which has the pores of over 3 ㎛ was achieved. In particular, the peak of (010) plane of the working electrode on the XRD spectrum which is responsible for selective oxidation appeared after calcination. The major product of 1-butene oxidation over V₂O₅ was butadiene. The technique of SEP (solid electrolyte potentiometry) was used to moitor the chemical potential of chemical species adsorved on the working electode. Over a wide range of gas compositions of 1-butene and oxygen, open circuit voltage (OCV) exhibited the mixed potential of surface oxygen activity.

Keywords:1-Butene Oxidation;Vanadium Oxide Electrode;Solid Electrolyte Potentiometry;Open Circuit Voltage

[References]

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[2] Stoukides M, Vayenas CG, J. Catal., 64, 18 (1980)

[3] Stoukides M, Vayenas CG, J. Catal., 82, 45 (1983)

[4] Hetrick RE, Logothetis EM, Appl. Phys. Lett., 34, 117 (1979)

[5] Vayenas CG, Michaels JN, Surf. Sci., 120, L405 (1982)

[6] Okamoto H, Obayashi H, Kudo T, Solid State Ion., 3, 453 (1981)

[7] Okamoto H, Obayashi H, Kudo T, J. Catal., 87, 1 (1984)

[8] Fleming WJ, J. Electrochem. Soc., 124, 21 (1977)

[9] Seimanides S, Stoukies M, J. Catal., 88, 490 (1984)

[10] Moon S, Kim T, Park S, Jung J, Hong S, "3rd World Congress on Oxidation Catalysis," ed. R.K. Grasselli, 1231, Elsevier, Science (1997)

[11] Philips TE, Mater. Res. Bull., 22, 1113 (1987)

[12] Duchene J, Thin Solid Films, 12, 231 (1972)

[13] Greenberg CB, Thin Solid Films, 110, 73 (1983)

[14] Hou LS, J. Non-Cryst. Solids, 112, 424 (1989)

[15] Bullot J, Cordier P, Gallais O, Gauthier M, J. Non-Cryst. Solids, 68, 123 (1984)

[16] Jung J, Ph.D. Dissertation, Korea Univ., Seoul, Korea (1994)

[17] Park SD, Lee HY, Hong SI, HWAHAK KONGHAK, 35(3), 390 (1997)

[18] Cavini F, Centi G, Manenti I, Trifiro F, Ind. Eng. Chem. Prod. Res. Dev., 24, 221 (1985)

[19] Park SD, Jung JH, Hong SI, React. Kinet. Catal. Lett., 57, 237 (1996)

[20] Vayenas CG, J. Catal., 90, 371 (1984)