Methanol selective oxidation to dimethoxymethane on H3PMo12O40/SBA-15 supported catalysts

Heqin Guo; Debao Li; Haicheng Xiao; Jianli Zhang; Wenhuai Li; Yuhan Sun

Korean Journal of Chemical Engineering, Vol.26, No.3, 902-906, May, 2009

DOI10.1007/s11814-009-0151-5 Export Citation

Methanol selective oxidation to dimethoxymethane on H3PMo12O40/SBA-15 supported catalysts

Heqin Guo^{1, 2}, Debao Li¹, Haicheng Xiao^{1, 2}, Jianli Zhang^{1, 2}, Wenhuai Li¹, and Yuhan Sun^{1, †}

¹State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, Shanxi 030001, P. R. China
²Graduate University of the Chinese Academy of Sciences, Beijing 100039, China

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A series of SBA-15 supported H3PMo12O40 catalysts were prepared for the one-step oxidation of methanol to dimethoxymethane (DMM). The evaluation and characterization revealed that higher DMM selectivity obtained on the incipient wetness impregnation (IM) catalyst was related to the instability of H3PMo12O40 on it. Raman spectra showed that 12-molybdophosphoric acid was more stable on the direct synthesis (DS) catalyst than on the IM catalyst and the existence of SBA-15 support enhanced the stability of H3PMo12O40. Moreover, higher H3PMo12O40 loading resulted in more acid sites and low DMM selectivity, furthermore the thermal pretreatment on H3PMo12O40 influenced its structure and thus affected DMM selectivity.

Keywords:12-Molybdophosphoric Acid;SBA-15 Mesoporous Sieve;Methanol;Selective Oxidation;Dimethoxymethane

[References]

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[Referenced By]

[1] Hagen GP, Spangler MJ, US Patent, 6,265,528 (2001)

[2] Hagen GP, Spangler MJ, US Patent, 6,437,195 (2002)

[3] Yuan Y, Liu H, Imoto H, Shido T, Iwasawa Y, J. Catal., 51, 195 (2000)

[4] Yuan YH, Iwasawa Y, J. Phys. Chem. B, 106(17), 4441 (2002)

[5] Liu HC, Ilesia ES, J. Phys. Chem. B, 107, 10840 (2007)

[6] La KW, Kim H, Jung JC, Lee J, Park DR, Lee SH, Song IK, Korean J. Chem. Eng., 25(4), 710 (2008)

[7] Sainero LMG, Damyanova S, Fierro JLG, Appl. Catal. A: Gen., 208(1-2), 63 (2001)

[8] Kozhevnikov IV, Chem. Rev., 98(1), 171 (1998)

[9] Mizuno N, Misono M, Chem. Rev., 98, 198 (1998)

[10] Yuan X, Shen J, li G, J. Catal., 23, 9 (2002)

[11] Zhao DY, Feng JL, Huo QS, Melosh N, Fredrickson GH, Chmelka BF, Stucky GD, Science, 279(5350), 548 (1998)

[12] Luan Z, Hartmann M, Zhao D, Zhou W, Chem. Mater., 11, 1621 (1999)

[13] Lee JW, Cho DL, Shim WG, Moon H, Korean J. Chem. Eng., 21(1), 246 (2004)

[14] Deltcheff CR, Aouissi A, Launayb S, Fournier M, J. Mole. Catal. A: Chemical, 114, 33 (1996)

[15] Rocchicciolideltcheff C, Aouissi A, Bettahar M, Launay S, Fournier M, J. Catal., 164(1), 16 (1996)

[16] Damyanova S, Cubeiro ML, Fierro JLG, J. Mole. Catal. A: Chemical, 142, 85 (1999)