Partial Oxidation of Ethane on Silica-Supported 12-Molybdophosphoric Acid in the Presence of Tetrachloromethane

Hong SS; Lee GD; Moffat JB

Journal of Industrial and Engineering Chemistry, Vol.1, No.1, 49-56, December, 1995

In the oxidation of ethane with nitrous oxide on silica-supported 12-molybdophosphoric acid, the addition of small quantities of tetrachloromethane(TCM) to the feed stream increases the activity and the yield of acetaldehyde. In addition, the effects of several variables such as loading of the catalysts, reaction temperature, partial pressure of reactants and residence time in the presence and absence of TCM, on the conversion and product distribution were observed. The kinetics in the presence of TCM also has been studied. The conversion and yield of acetaldehyde show maximum values at a loading of 20wt% both in the presence and absence of TCM. The apparent reaction order of ethane conversion in the presence of TCM is ca. 0.7 with respect to C₂H₆ and ca. 0.6 with respect to N₂O. In addition, the apparent activation energy is 19.91 kcal/mole.

[References]

Ward MB, Lin MJ, Lunsford JH, J. Catal., 50, 306 (1977)
Yang TY, Lunsford JH, J. Catal., 63, 505 (1980)
Mendelovici L, Lunsford JH, J. Catal., 94 (1985)
Argent A, Harrison PG, J. Chem. Soc.-Chem. Commun., 1058 (1986)
Morales E, Lunsford JH, J. Catal., 118, 255 (1989)
Oyama ST, Somorjai GA, J. Phys. Chem., 94, 5022 (1990)
Oyama ST, Somorjai GA, J. Phys. Chem., 94, 5029 (1990)
Erdohelyi A, Solomosi F, J. Catal., 123, 31 (1990)
Burch R, Tsang SC, Appl. Catal., 65, 259 (1990)
Burch R, Swarnakar R, Appl. Catal. A: Gen., 75, 321 (1991)
Iwamoto M, Taga T, Kagawa S, Chem. Lett., 1496 (1982)
Hong SS, Moffat JB, Appl. Catal. A: Gen., 109(1), 117 (1994)
Grau JM, Jablonski EL, Dieck CL, Verderone RJ, Parera JM, Appl. Catal., 36, 109 (1988)
Cullis CF, Keene DE, Trimm DL, J. Catal., 19, 378 (1970)
Hong SS, Woo HC, Ju CS, Lee GD, Moffat JB, J. Korean Ind. Eng. Chem., 5(1), 139 (1994)
Ghosh AK, Kydd RA, Catal. Rev.-Sci. Eng., 27, 593 (1985)
Kasztelan S, Payen E, Moffat JB, J. Catal., 125, 45 (1990)

[1] Ward MB, Lin MJ, Lunsford JH, J. Catal., 50, 306 (1977)

[2] Yang TY, Lunsford JH, J. Catal., 63, 505 (1980)

[3] Mendelovici L, Lunsford JH, J. Catal., 94 (1985)

[4] Argent A, Harrison PG, J. Chem. Soc.-Chem. Commun., 1058 (1986)

[5] Morales E, Lunsford JH, J. Catal., 118, 255 (1989)

[6] Oyama ST, Somorjai GA, J. Phys. Chem., 94, 5022 (1990)

[7] Oyama ST, Somorjai GA, J. Phys. Chem., 94, 5029 (1990)

[8] Erdohelyi A, Solomosi F, J. Catal., 123, 31 (1990)

[9] Burch R, Tsang SC, Appl. Catal., 65, 259 (1990)

[10] Burch R, Swarnakar R, Appl. Catal. A: Gen., 75, 321 (1991)

[11] Iwamoto M, Taga T, Kagawa S, Chem. Lett., 1496 (1982)

[12] Hong SS, Moffat JB, Appl. Catal. A: Gen., 109(1), 117 (1994)

[13] Grau JM, Jablonski EL, Dieck CL, Verderone RJ, Parera JM, Appl. Catal., 36, 109 (1988)

[14] Cullis CF, Keene DE, Trimm DL, J. Catal., 19, 378 (1970)

[15] Hong SS, Woo HC, Ju CS, Lee GD, Moffat JB, J. Korean Ind. Eng. Chem., 5(1), 139 (1994)

[16] Ghosh AK, Kydd RA, Catal. Rev.-Sci. Eng., 27, 593 (1985)

[17] Kasztelan S, Payen E, Moffat JB, J. Catal., 125, 45 (1990)