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Received October 19, 2008
Accepted November 16, 2008
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Preparation, characterization, and catalytic activity of H5PMo10V2O40 immobilized on nitrogen-containing mesoporous carbon (PMo10V2/N-MC) for selective conversion of methanol to dimethoxymethane
School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, Shinlim-dong, Gwanak-gu, Seoul 151-744, Korea 1Korea Research Institute of Chemical Technology, Daejeon 305-600, Korea
inksong@snu.ac.kr
Korean Journal of Chemical Engineering, May 2009, 26(3), 660-665(6), 10.1007/s11814-009-0110-1
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Abstract
Abstract.Nitrogen-containing mesoporous carbon (N-MC) was synthesized by a templating method using SBA-15 and polypyrrole as a templating agent and a carbon precursor, respectively. The N-MC was then modified to have a positive charge, and thus, to provide a site for the immobilization of [PMo10V2O40]^(5-). By taking advantage of the overall negative charge of [PMo10V2O40]^(5-), H5PMo10V2O40 (PMo10V2) catalyst was chemically immobilized on the N-MC support as a charge-matching component. Characterization results showed that nitrogen in the N-MC played an important role in forming a nitrogen-derived functional group (amine group), and PMo10V2 catalyst was finely and chemically immobilized on the nitrogen-derived functional group of N-MC support. In the vapor-phase selective conversion of methanol, the PMo10V2/N-MC catalyst showed a higher conversion of methanol than the bulk PMo10V2 catalyst. Furthermore, the PMo10V2/N-MC catalyst showed a higher selectivity for dimethoxymethane (a product formed by bifunctional oxidation-acid-acid catalysis) and a higher selectivity for methylformate (a product formed by bifunctional oxidation-acid-oxidation catalysis) than the PMo10V2 catalyst. Reaction pathway for selective conversion of methanol to_x000D_
dimethoxymethane over PMo10V2/N-MC catalyst could be controlled by changing the methanol feed rate.
Keywords
References
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Misono M, Korean J. Chem. Eng., 14(6), 427 (1997)
Lee WY, Song IK, Lee JK, Park GI, Lim SS, Korean J. Chem. Eng., 14(6), 432 (1997)
Choi JS, Song IK, Lee WY, Korean J. Chem. Eng., 17(3), 280 (2000)
La KW, Kim H, Jung JC, Lee J, Park DR, Lee SH, Song IK, Korean J. Chem. Eng., 25(4), 710 (2008)
Lee JK, Song IK, Lee WY, Korean J. Chem. Eng., 12(3), 384 (1995)
Youn MH, Park DR, Jung JC, Kim H, Barteau MA, Song IK, Korean J. Chem. Eng., 24(1), 51 (2007)
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Okuhara T, Mizuno N, Misono M, Adv. Catal., 41, 113 (1996)
Hill CL, Prosser-McCartha CM, Coord. Chem. Rev., 143, 407 (1995)
Kozhevnikov IV, Chem. Rev., 98(1), 171 (1998)
Mizuno N, Misono M, Chem. Rev., 98(1), 199 (1998)
He NY, Woo CS, Kim HG, Lee HI, Appl. Catal. A: Gen., 281(1-2), 167 (2005)
Pozniczek J, Lubanska A, Micek-Ilnicka A, Mucha D, Lalik E, Bielanski A, Appl. Catal. A: Gen., 298, 217 (2006)
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Nomiya K, Murasaki H, Miwa M, Polyhedron, 5, 1031 (1986)
Hasik M, Turek W, Stochmal E, Lapkowski M, Pron A, J. Catal., 147(2), 544 (1994)
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Raj NKK, Deshpande SS, Ingle RH, Raja T, Manikandan P, Catal. Lett., 98(4), 217 (2004)
Kim H, Jung JC, Kim P, Yeom SH, Lee KY, Song IK, J. Mol. Catal. A-Chem., 259(1-2), 150 (2006)
Hong EH, Jung YH, Lee KH, Korean J. Chem. Eng., 17(2), 237 (2000)
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Kim H, Jung JC, Park DR, Baeck SH, Song IK, Appl. Catal. A: Gen., 320, 159 (2007)
Shalagina AE, Ismagilov ZR, Podyacheva OY, Kvon RI, Ushakov VA, Carbon, 45, 1808 (2007)
Pels JR, Kapteijn F, Moulijn JA, Zhu Q, Thomas KM, Carbon, 33, 1641 (1995)
Matter PH, Zhang L, Ozkan US, J. Catal., 239(1), 83 (2006)
