Partial oxidation of methane to formaldehyde over a Mo-0/Si02 catalyst

• Autorzy: Kałucki K. , Michalkiewicz M.

Warianty tytułu

PL

Parcjalne utlenianie metanu do formaldehydu na katalizatorach Mo-O/SiO2

• Języki publikacji: EN

Abstrakty

EN

Studies on the oxidation of methane by oxygen over a Mo-O/SiO2 catalyst were performed in a vertical tubular reactor. The process was carried out over a range of temperatures from 400 to 600°C at atmospheric pressure. Both the content of oxygen in the reaction mixture and the contact time were varied. The major products of the oxidation of methane over the Mo-O/SiO, catalyst have been formaldehyde, carbon oxides, and water. The effect of temperature, contact time and methane conversion on the selectivity of methane oxidation to the respective products was studied. The mechanism of the reactions proceeding during the oxidation of methane by oxygen over this catalyst has been proposed.

Słowa kluczowe

EN

methane conversion; partial oxidation of methane; formaldehyde

PL

konwersja metanu; parcjalne utlenianie metanu; formaldehyd

• Wydawca: West Pomeranian University of Technology. Publishing House
• Czasopismo: Polish Journal of Chemical Technology
• Rocznik: 2000
• Tom: Vol. 2, nr 2
• Strony: 17--20
• Opis fizyczny: Bibliogr. 19, poz., rys., wykr.

Twórcy

autor

Kałucki K.

• Technical University of Szczecin, Institute of Inorganic Chemical Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

autor

Michalkiewicz M.

• Technical University of Szczecin, Institute of Inorganic Chemical Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland

Bibliografia

• (1) Kałucki K., Łabęcki M., Morawski A.W., Conversion of methane to higher hydrocarbons, Przem. Chem., 1991, 70, 249.
• (2) Kałucki K., Łabęcki M., Morawski A.W., Conversion of methane to formaldehyde and methanol, Przem. Chem., 1992, 71,51.
• (3) Dowden D.A., Walker G.T., Oxygenated hydrocarbons production. Pat UK 1, 244, 001, 1971.
• (4) Otsuka K., Hatano M., The catalysts for the synthesis of formaldehyde by partial oxidation of methane, J. Catal., 1987, 108. 252.
• (5) Spencer N.D., Pereira C.J., V2O5-SiO2.-catalyzed methane partial oxidation with molecular oxygen, J. Catal., 1989, 116, 399.
• (6) Banares M.A., Rodrigues-Ramos I., Guerrero-Ruiz A., Fierro J.L., Mechanistic aspects of the selective oxidation of methane to C1 oxygenates over MoO3/SiO2, catalysts in a single catalytic step, Proceedings of the10th Int Congr of Catal., Akademiai Kiado, Budapest, 1993, 184.
• (7) Spencer N.D., Partial oxidation of methane to formaldehyde by means of molecular oxygen, J. Catal, 1988, 109, 187.
• (8) Otsuka K., Komatsu T., Jinno K., Uragami Y., Morikawa A., Activation of methane and synthesis of formaldehyde by partial oxidation, Proc.-Int. Congr. Catal. 9th 1988, 915.
• (9) Otsuka K., Hatano M., Boron, phosphorus, and alkaline earth-mixed oxides as active catalysts in partial oxidation of methane into formaldehyde, Chem. Lett., 1992, 2397.
• (10) Ihraeva L.S, Kazakova C.D., Mardashev Y.S., Nefedov B.K., Ag-Au/MeF2 catalysts for methane oxidation, React. Kinet. Catal Lett., 1988, 36, 473.
• (11) Casey P.S., McAllister T., Foger K., Selective oxidation of methane to methanol at high pressures, Ind. Eng. Chem. Res., 1994, 33, 1120.
• (12) Chun J.W., Anthony R.C., Free-radical kinetic model for homogenous oxidation of methane to methanol, Ind. Eng. Chem. Res., 1993, 32, 796.
• (13) Yarlagadda P.S., Morton L.A., Hunter N.R., Gesser H.D., Direct conversion of methane to methanol in a flow reactor, Ind. Eng. Chem. Res., 1988, 27, 252.
• (14) Burch R., Squire C.D., Tsang S.C., Direct conversion of methane into methanol, J. Chem. Soc., Faraday Trans 1, 1989, 85, 3561.
• (15) Lott J.L., Sliepcevich C.M., Partial oxidation of methane at high pressures, Ind. Eng. Chem. Proc. Des. Develop., 1967, 67, 67.
• (16) Rytz D.W., Baiker A., Partial Oxidation of Methane to Methanol in a Flow Reactor at Elevated Pressure, Ind. Eng. Chem. Res., 1991, 30, 2287.
• (17) Mason W., Wheeler R.V., The effect of temperature and pressure on the limits of inflammability of mixtures of methane and air, J. Chem. Soc., 1918, 113, 45.
• (18) Melvin A., Spontaneous ignition of methane - air mixtures at high pressure. I - The ignition delay preceding explosion, Combust. Flame, 1966, 120, 120.
• (19) Melvin A., Spontaneous ignition of methane - air mixtures at high pressure. II - The expIosive region of reaction, Combust. Flame, 1966, 120, 128.