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Korean Journal of Chemical Engineering, Vol.25, No.5, 987-997, 2008
Effect of Ni in palladium β-zeolite on hydroisomerization of n-decane
Bifunctional catalysts containing (0.1-0.5 wt%) Nickel and 0.1 wt% of Pd supported on H-β zeolite were synthesized by incipient wetness impregnation method and characterized by XRD, TEM, XPS, TPD and TPR techniques. The catalytic activity of Ni containing and Ni free Pd/H-β Catalysts was studied, and it was found that Ni up to a threshold value (0.3 wt% on β) produced increased the n-decane conversion and isomerization selectivity. When Ni content exceeds the threshold value, the conversion increases but isomerized products decrease. Moreover, Ni containing Pd/H-β showed increased sustainability and favored the protonated cyclopropane (PCP) intermediate mechanism in n-decane isomerization. The catalyst containing 0.3 wt% Ni 0.1 wt% Pd is adjudged as one performing better than other catalysts studied because of the isomerized mixture from it shows better octane number.
[References]
- Miller SJ, Stud. Surf. Sci. Catal., 84, 2319, 1994
- Weitkamp J, Appl. Catal., 8, 123, 1983
- Jacobs PA, Martens MA, Weitkamp J, Beyer HK, Faraday Discuss. Chem. Soc., 72, 353, 1981
- Leu LJ, Hov LY, Kang BC, Li C, Wu ST, Wu TC, Appl. Catal., 69, 49, 1991
- Guisnet M, Fouche V, Belloum M, Bournonville JP, Travers C, Appl. Catal., 71, 283, 1991
- Hochtl M, Jentys A, Vinek H, J. Catal., 190(2), 419, 2000
- Ponec V, Catal. Rev.-Sci. Eng., 11, 41, 1975
- Sachtler WMH, Catal. Rev., 14, 193, 1976
- Bertolini JC, Tardi B, Abon M, Billy J, Delichre P, Massardier J, Surf. Sci., 135, 117, 1983
- Dominguez JM, Vazquez A, Renouprez AJ, Yacaman MJ, Surf. Sci., 75, 101, 1982
- Coonradt ML, Garwood WE, Ind. Eng. Chem. Prod. Res. Dev., 3, 38, 1964
- Martens JA, Tielen M, Jacobs PA, Weitkamp J, Zeolites, 4, 98, 1984
- Arifulin AS, Vol-Epshtein AB, Krichko AA, Yulin MK, Khimiya Tverdogo Topliva, 5, 122, 1976
- Martens JA, Perez-Pariente J, Jacobs PA, Acta Physica et Chemica, 31, 487, 1985
- Martens JA, Perez-Pariente J, Jacobs PA, Math. Phys. Sci., 165, 115, 1986
- Corma A, Martinez A, Pergher S, Peratello S, Perego C, Bellusi G, Appl. Catal., 152, 107, 1997
- Galperin LB, Appl. Catal., 209, 257, 2001
- Galperin LB, Bradley SA, Mezza TM, Appl. Catal., 219, 79, 2001
- Elangovan SP, Bischof C, Hartmann M, Catal. Lett., 80(1-2), 35, 2002
- Elangovan SP, Hartmann M, J. Catal., 217(2), 388, 2003
- Rezgui Y, Guemini M, Appl. Catal., 282, 45, 2005
- Dorado F, Romero R, Canizares P, Appl. Catal., 236, 235, 2002
- Canizares P, Delucas A, Valverde JL, Dorado F, Ind. Eng. Chem. Res., 36(11), 4797, 1997
- Treacy MMJ, Higgins JB, XRD powder patterns for zeolites, Vth edition, 2004
- Faherazzi G, Benedetti A, Martorans A, Giuliano S, Duca D, Deganello G, Catal. Lett., 6, 263, 1990
- Cullity BD, Elements of X-ray diffraction, Addison Wasley Pub Co. New York, 284, 1978
- Eswaramoorthi I, Lingappan N, Catal. Lett., 87, 133, 2003
- Jao RM, Lin TB, Chang JR, J. Catal., 161(1), 222, 1996
- Lee CG, Kim JS, Song PS, Choi GS, Kang Y, Choi MJ, Korean J. Chem. Eng., 20(1), 133, 2003
- de Lucas A, Sanchez P, Funez A, Ramos MJ, Valverde JL, Ind. Eng. Chem. Res., in press
- Canizares P, de Lucas A, Dorado F, Duran A, Asencio I, Appl. Catal., 169, 137, 1998
- Yoshioka CMN, Garetto T, Cardoso D, Catal. Today, 107, 693, 2005
- Feeley JS, Sachlter WMH, Zeolites, 10, 738, 1990
- Narayana M, Michalik J, Contarini S, Kevan L, J. Phys. Chem., 89, 3895, 1985
- Minchev Ch, Knazirev V, Kosova L, Pechev V, Grunsser W, Schimidt F, in: L.V. C. Rees (Ed.), Proceedings of the Fifth International Conference on Zeolites, Heydon, London, 335, 1980
- Narayanan S, Zeolites, 4, 231, 1984
- Xiao S, Meng Z, J. Chem. Soc.-Faraday Trans., 90, 2591, 1994
- Romero MD, de Lucas A, Calles JA, Rodriguez A, Appl. Catal., 146, 425, 1996
- Zhang WM, Smirniotis PG, J. Catal., 182(2), 400, 1999
- Jordao MH, Simoes V, Montes A, Cardoso E, Stud. Surf. Sci. Catal., 130, 2387, 2000
- Giannetto GE, Perot GE, Guisnet MR, Ind. Eng. Chem. Prod. Res. Dev., 25, 481, 1986
- Kuznetsov PN, J. Catal., 218(1), 12, 2003
- Steijns M, Froment G, Jacobs P, Uytterhoeven J, Weitkamp J, Ind. Eng. Chem. Prod. Res. Dev., 20, 654, 1981
- Weitkamp J, Ind. Eng. Chem. Prod. Res. Dev., 21, 550, 1982
- Martens JA, Jacobs PA, Theoretical aspects of heterogeneous catalysis (J. B. Moffat, Ed.), Chap. 2, Catalysis Series, Van Nostrand Reinhold, New York, 1990
- Meriaudeau P, Tuan VA, Lelebvre F, Nghiem VT, Naccache C, Microporous Mesoporous Mater., 22, 435, 1998
- de Lucas A, Valverde JL, Sanchez P, Dorado F, Ramos MJ, Appl. Catal. A: Gen., 282(1-2), 15, 2005
- Baerlocher Ch, Meier WH, Olson DH, Vth edition, pub. Struc. Comm. IZA, 2001
- Brouwer DM, in: R. Prins, G. C. A. Schult (Eds.), Chemistry and chemical engineering of catalytic processes, Sijthof and Noordhoff, Germantown, MD, 1980
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