Characterization of WO3 Supported on TiO2-ZrO2 and Catalytic Activity for Acid Catalysis

Jong Rack Sohn; Hae Souk Cho; Hae Won Kim

Journal of Industrial and Engineering Chemistry, Vol.5, No.1, 1-9, March, 1999

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Characterization of WO₃ Supported on TiO₂-ZrO₂ and Catalytic Activity for Acid Catalysis

Jong Rack Sohn^†, Hae Souk Cho, and Hae Won Kim¹

Department of Industrial Chemistry, Engineering College, Kyungpook National University, Taegu 702-701, Korea
¹Department of Industrial Chemistry, Kyungil University, Kyungsan 712-701, Korea

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Tungsten oxide supported on TiO₂-ZrO₂ was prepared by drying powdered Ti(OH)₄-Zr(OH)₄ with ammonium metatungstate aqueous solution followed by calcining in air at high temperature. The characterization of prepared catalysts was performed using Fourier transform infrared (FTIR), Raman, X-ray photoelectron spectroscopy (XPS), and X-ray diffraction (XRD) and by measuring surface area. The specific surface area and acidity of WO₃/50-TiO₂-ZrO₂ (500) increased in proportion to the tungsten oxide content up to 20 wt % due to the interaction between WO₃ and TiO₂-ZrO₂. Since the TiO₂-ZrO₂ stabilizes the tungsten oxide species, for the samples equal to or less than 20 wt %, tungsten oxide was well dispersed on the surface of TiO₂-ZrO₂, but for the samples above 20 wt % the triclinic phase of WO₃ was observed at any calcination temperature. The high acid strength and high acidity of WO₃/TiO₂-ZrO₂ were responsible for the W=O bond nature of complex formed by the interaction between WO₃ and TiO₂-ZrO₂. The catalytic activities of WO₃/TiO₂-ZrO₂ catalysts for cumene dealkylation were correlated to their acidity

Keywords:WO₃/TiO₂-ZrO₂;characterization;acid catalysis;cumene dealkylation

[References]

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Cheung TK, Ditri JL, Lange FC, Gates BC, Catal. Lett., 31(2-3), 153 (1995)
Tanabe K, Misono M, Ono Y, Hattori H, New Solid Acids and Bases, Elsevier Science, Amsterdam (1989)
Arata K, Adv. Catal., 37, 165 (1990)
Ward DA, Ko EI, J. Catal., 150(1), 18 (1994)
Kustov LM, Kazansky VB, Figueras F, Tichit D, J. Catal., 150(1), 143 (1994)
Hsu CY, Heimbuch CR, Armes CT, Gates BC, J. Chem. Soc.-Chem. Commun., 1645 (1992)
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Torravo MJ, Alario MA, Soria J, J. Catal., 86, 473 (1984)
Doh IJ, Pae YI, Sohn JR, J. Korean Ind. Eng. Chem., 6(6), 1170 (1995)
Larsen G, Lotero E, Petkovic LM, Shobe DS, J. Catal., 169(1), 67 (1997)
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Anderson A, Spectrosc. Lett., 9, 809 (1976)
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Horsley JA, Wachs IE, Brown JM, Via GH, Hardcastle FD, J. Phys. Chem., 91, 4014 (1987)
Chan SS, Wachs IE, Murrel LL, J. Catal., 90, 150 (1984)
Tauster SJ, Fung SC, Baker RTK, Horsley JA, Science, 211, 1121 (1981)
Wachs IE, Chersich EC, Hardenbergh JH, Appl. Catal., 13, 335 (1985)
Olah FGA, Prakash GKS, Sommer J, Science, 206, 13 (1979)
Sohn JR, Kim HJ, J. Catal., 101, 428 (1986)
Sohn JR, Cho SG, Pae YI, Hayashi S, J. Catal., 159(1), 170 (1996)
Tanabe K, Misono M, Ono Y, Hattori H, New Solid Acids and Bases, Elsevier Science, Amsterdam (1989)
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[Referenced By]

[1] Wainwright MS, Foster NR, Catal. Rev., 19, 211 (1979)

[2] Dadyburjor DB, Jewur SS, Ruckenstein E, Catal. Rev., 19, 293 (1979)

[3] Cheung TK, Ditri JL, Lange FC, Gates BC, Catal. Lett., 31(2-3), 153 (1995)

[4] Tanabe K, Misono M, Ono Y, Hattori H, New Solid Acids and Bases, Elsevier Science, Amsterdam (1989)

[5] Arata K, Adv. Catal., 37, 165 (1990)

[6] Ward DA, Ko EI, J. Catal., 150(1), 18 (1994)

[7] Kustov LM, Kazansky VB, Figueras F, Tichit D, J. Catal., 150(1), 143 (1994)

[8] Hsu CY, Heimbuch CR, Armes CT, Gates BC, J. Chem. Soc.-Chem. Commun., 1645 (1992)

[9] Hosoi T, Shimadzu T, Ito S, Baba S, Takaoka H, Imai T, Yokoyama N, Prepr. Symp. Div. Petr. Chem. American Chemical Society, Los Angeles, 562 (1988)

[10] Ebitani K, Konishi J, Hattori H, J. Catal., 130, 257 (1991)

[11] Lange FC, Cheung TK, Gates BC, Catal. Lett., 41(1-2), 95 (1996)

[12] Zarkalis AS, Hsu CY, Gates BC, Catal. Lett., 29(1-2), 235 (1994)

[13] Hino M, Arata K, J. Chem. Soc.-Chem. Commun., 1259 (1987)

[14] Larsen G, Lotero E, Parra RD, Proc. 11th Int. Congr. Catal., p. 533 (1996)

[15] Basrur AG, Patwardham SR, Vyas SN, J. Catal., 127, 86 (1991)

[16] Roosnaiern AJ, Koster D, Moi JC, J. Phys. Chem., 84, 3075 (1980)

[17] Karakonstantis L, Bourikas K, Lycourghiotis A, J. Catal., 162(2), 295 (1996)

[18] Grunert W, Shpiro ES, Feldhaus R, Anders K, Antoshin GV, Minachev KM, J. Catal., 107, 522 (1987)

[19] Santiesteban JG, Vartuli JC, Han S, Bastian RD, Chang CD, J. Catal., 168(2), 431 (1997)

[20] Boyse RA, Ko EI, J. Catal., 171(1), 191 (1997)

[21] Sohn JR, Park MY, J. Ind. Eng. Chem., 4(2), 84 (1998)

[22] Torravo MJ, Alario MA, Soria J, J. Catal., 86, 473 (1984)

[23] Doh IJ, Pae YI, Sohn JR, J. Korean Ind. Eng. Chem., 6(6), 1170 (1995)

[24] Larsen G, Lotero E, Petkovic LM, Shobe DS, J. Catal., 169(1), 67 (1997)

[25] Sohn JR, Ryu SG, Langmuir, 126, 9 (1993)

[26] Anderson A, Spectrosc. Lett., 9, 809 (1976)

[27] Vuurman MA, Wachs IE, Hirt AM, J. Phys. Chem., 95, 9928 (1991)

[28] Horsley JA, Wachs IE, Brown JM, Via GH, Hardcastle FD, J. Phys. Chem., 91, 4014 (1987)

[29] Chan SS, Wachs IE, Murrel LL, J. Catal., 90, 150 (1984)

[30] Tauster SJ, Fung SC, Baker RTK, Horsley JA, Science, 211, 1121 (1981)

[31] Wachs IE, Chersich EC, Hardenbergh JH, Appl. Catal., 13, 335 (1985)

[32] Olah FGA, Prakash GKS, Sommer J, Science, 206, 13 (1979)

[33] Sohn JR, Kim HJ, J. Catal., 101, 428 (1986)

[34] Sohn JR, Cho SG, Pae YI, Hayashi S, J. Catal., 159(1), 170 (1996)

[35] Tanabe K, Misono M, Ono Y, Hattori H, New Solid Acids and Bases, Elsevier Science, Amsterdam (1989)

[36] Decanio SJ, Sohn JR, Paul PO, Lunsford JH, J. Catal., 101, 132 (1986)