Journal of Industrial and Engineering Chemistry, Vol.11, No.6, 918-925, November, 2005
Characterization and Catalytic Properties of Vanadia/Titania Xerogel Catalysts for Ammoxidation of m-Xylene
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Vanadia/titania composite xerogel catalysts prepared by the alkoxide and non-alkoxide sol-gel process were evaluated as catalysts in a fixed-bed reactor for the gas phase ammoxidation of m-xylene in a temperature range from 573 to 698 K. The effects that the reaction temperature and the vanadia loadings had on had the reactino characteristics were investigated. A maximum yield of 73% of isophthalonitrile (IPN) was obtained using a vanadia loading of 3 wt% at 648 K with a contact time of 0.5 s. The vanadia/titania xerogel catalysts were characterized through nitrogen adsorption-desorption, temperature-programmed reduction (TPR), X-ray diffraction (XRD), and scannign electronic microscpy (SEM) analyses to explain their excellent catalytic performance in comparison with those of conventionally impregnated catalysts.
- Amiridis MD, Wachs IE, Deo G, Jehng JM, Kim DS, J. Catal., 161(1), 247 (1996)
- Casagrande L, Lietti L, Nova I, Forzatti P, Baiker A, Appl. Catal. B: Environ., 22(1), 63 (1999)
- Zegaoui O, Hoangvan C, Karroua M, Appl. Catal. B: Environ., 9(1-4), 211 (1996)
- Kang M, Choi DH, Choung SJ, J. Ind. Eng. Chem., 11(2), 240 (2005)
- Slinkard WE, Degroot PB, J. Catal., 68, 423 (1981)
- van Hengstum AJ, Ommen JC, Bosh H, Gellings PJ, Appl. Catal., 8, 369 (1983)
- Deo G, Wachs IE, J. Catal., 146(2), 323 (1994)
- Busca G, Elmi AS, Forzatti P, J. Phys. Chem., 91, 5263 (1987)
- Chary KVR, Kishan G, Lakshmi K, Ramesh K, Langmuir, 16(18), 7192 (2000)
- Moon SW, Lee GD, Park SS, Hong SS, J. Ind. Eng. Chem., 10(4), 661 (2004)
- Gasior M, Gasior I, Grzybowska B, Appl. Catal., 10, 87 (1984)
- Gasior M, Haber J, Machej T, Appl. Catal., 33, 1 (1987)
- Mehri S, Reine WL, Arne A, Susan J, Yanping T, J. Catal., 132, 128 (1991)
- Rodella CB, Franco RWA, Magon CJ, Donoso JP, Nunes LAO, Saeki MJ, Aegerter MA, Sargentelli V, Florentino AO, J. Sol-Gel Sci. Technol., 25, 83 (2002)
- Wachs IE, Weckhuysen BM, Appl. Catal. A: Gen., 157(1-2), 67 (1997)
- Courtine P, Bordes E, Appl. Catal. A: Gen., 157(1-2), 45 (1997)
- Grzybowskaswierkosz B, Appl. Catal. A: Gen., 157(1-2), 263 (1997)
- Rizayev RG, Mamedov EA, Vislovskii VP, Sheinin VE, Appl. Catal. A: Gen., 83, 103 (1992)
- Brinker CJ, Scherer GW, Sol-Gel Science, the Physics and Chemistry of Sol-Gel Processing, Academic Press, New York (1990)
- Suh DJ, Park TJ, Kim WI, Hong IK, J. Power Sources, 117(1-2), 1 (2003)
- Fierro JLG, Spectroscopic Characterization of Heterogeneous Catalysts-Part A: Methods of Surface Analysis, Ch. 3, Elsevier Science Publishers, Amsterdam (1990)
- Rodella CB, Franco RWA, Magon CJ, Donoso JP, Nunes LAO, Saeki MJ, Aegerter MA, Florentino AO, J. Sol-Gel Sci. Technol., 25, 75 (2002)
- Lietti L, Forzatti P, Ramis G, Busca G, Bregani F, Appl. Catal. B: Environ., 3(1), 13 (1993)
- Rodella CB, Mastelaro VR, J. Phys. Chem. Solids, 64, 833 (2003)
- Baiker A, Dollenmeir P, Glinski M, Reller A, Appl. Catal., 35, 351 (1987)
- Chary KVR, Kishan G, Bhaskar T, Sivaraj H, J. Phys. Chem. B, 102(35), 6792 (1998)
- Bond GC, Zurita JP, Flamerz S, Gellings PJ, Bosch H, van Ommen JG, Kip BJ, Appl. Catal., 22, 361 (1986)
- Roozeboom FJ, Mittlemeijer-Hazeleger MC, Mouljin JA, Medema M, DeBeer VHJ, Gellings PJ, J. Phys. Chem., 84, 2783 (1980)
- Bond GC, Appl. Catal. A: Gen., 157(1-2), 91 (1997)
- Sachlter WMH, De Boer NH, in Proc. 3rd Int'l Congr. Catal. Amsterdam, p.240, Wiley, New York (1965)
- Sachtler WMH, Dorgelo GJH, Fahrenfort J, Voorhoeve RJH, in Proc. of 4th Int'l Congr. Catal., p. 454, Alder, New York (1968)
- Doornkamp C, Clement M, Gao X, Deo G, Wachs IE, Ponec V, J. Catal., 185(2), 415 (1999)