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Received March 5, 2013
Accepted May 9, 2013
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Catalytic activity and characterization of V2O5/γ-Al2O3 for ammoxidation of m-xylene system
Department of Chemical and Biomolecular Engineering, Yonsei University, 134, Shinchon-dong, Seodaemun-gu, Seoul 120-749, Korea 1Clean Energy Research Center, Korea Institute of Science and Technology, P. O. Box 131, Cheongryang, Seoul 130-650, Korea 2Department of Chemical and Environmental Technology, Inha Technical College, 100, Inha-ro, Incheon 402-752, Korea
Korean Journal of Chemical Engineering, August 2013, 30(8), 1566-1570(5), 10.1007/s11814-013-0082-z
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Abstract
An ammoxidation of m-xylene was evaluated in a fixed-bed reactor using V2O5 on various oxides. Catalysts were prepared by wet impregnation method. At first, the loading of V2O5 was varied from 5 wt% to 20 wt% on γ-Al2O3 support to estimate the most effective amount of V2O5. Second, the effect of catalyst supports was examined at 10 wt% loading of V2O5. V2O5/TiO2 and V2O5/SiO2 catalysts were employed to compare the ammoxidation reaction with V2O5/γ-Al2O3. Most catalytic activity was observed when γ-Al2O3 was used as a support. Careful characterization was followed by physicochemical techniques, such as BET measurement, X-ray diffraction (XRD), Raman spectroscopy and temperature-programmed reduction (TPR). The results provided the clue that monolayer V2O5 was favorably dispersed on the surface of γ-Al2O3 up to 10 wt%, which led to the highest yield of isophthalonitrile (IPN).
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References
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Grasselli RK, Catal. Today, 49(1-3), 141 (1999)
Sanati M, Akbari R, Masetti S, Trifiro F, Catal. Today, 42(3), 325 (1998)
Narayana KV, Venugopal A, Rao KS, Rao VV, Masthan SK, Rao PK, Appl. Catal. A: Gen., 150(2), 269 (1997)
Martin A, Lucke B, Catal. Today, 57(1-2), 61 (2000)
Frank K, Wolff T, Lorenz H, Seidel-Morgenstern A, Suchorski Y, Piorkowska M, Weiss H, J. Catal., 247(2), 176 (2007)
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Baldychev I, Gorte RJ, Vohs JM, J. Catal., 269(2), 397 (2010)
Routray K, Reddy KRSK, Deo G, Appl. Catal. A: Gen., 265(1), 103 (2004)
Srinivas ST, Lakshmi LJ, Prasad PS, Madhavendra SS, Rao PK, J. Mater. Sci., 32(4), 965 (1997)
Arena F, Frusteri F, Parmaliana A, Appl. Catal. A: Gen., 176(2), 189 (1999)
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