Propane Dehydrogenation with Better Stability by a Modified Pt-Based Catalyst
The effect of transition metal doping on Pt/Al2O3
catalyst used in propane dehydrogenation reaction at 500°C was
studied. The preparation methods investigated were sequential
impregnation (Pt followed by the 2nd metal or the 2nd metal followed
by Pt) and co-impregnation. The metal contents of these catalysts
were fixed as the weight ratio of Pt per the 2nd metal of around 0.075.
These catalysts were characterized by N2-physisorption, TPR, COchemisorption
and NH3-TPD. It was found that the impregnated 2nd
metal had an effect upon reducibility of Pt due to its interaction with
transition metal-containing structure. This was in agreement with the
CO-chemisorption result that the presence of Pt metal, which is a
result from Pt species reduction, was decreased. The total acidity of
bimetallic catalysts is decreased but the strong acidity is slightly
increased. It was found that the stability of bimetallic catalysts
prepared by co-impregnation and sequential impregnation where the
2nd metal was impregnated before Pt were better than that of
monometallic catalyst (undoped Pt one) due to the forming of Pt sites
located on the transition metal-oxide modified surface. Among all
preparation methods, the sequential impregnation method- having Pt
impregnated before the 2nd metal gave the worst stability because this
catalyst lacked the modified Pt sites and some fraction of Pt sites was
covered by the 2nd metal.
[1] V.M. Therese Herauville, “Catalytic Dehydrogenation of Propane,
Oxidative and Non-Oxidative Dehydrogenation of Propane”, NTNUTrondheim,
Norwegian University of Science and Technology, 2012,
pp. 7–8.
[2] A.K. Aboul-Gheit, M.F. Menoufy, F.M. Ebeid, "Platinum-germanium
and platinum-tungsten on alumina catalysts for hydroconversion
reactions", Applied Catalysis, vol. 4, pp. 181-188, 1982.
[3] J.L. Contreras, G. Del Toro, I. Schifter, G.A. Fuentes, “TPR and activity
characterization of Pt-W/Al2O3 reforming catalysts”, Studies in Surface
Science and Catalysis, pp. 51-59, 1988.
[4] J.S. M'Boungou, L. Hilaire, G. Maire, F. Garin, "Role of tungsten in
supported Pt-W reforming catalysts Part II. Influence of the tungsten
loading and metal-support interactions effect", Catalysis Letters, vol. 10,
pp. 401-411, 1991.
[5] J.S. M'Boungou, J.L. Schmitt, G. Maire, F. Garin, "Role of tungsten in
supported Pt-W reforming catalysts Part I. Modification of platinum
activity and selectivity by addition of tungsten", Catalysis Letters, vol.
10, pp. 391-400, 1991.
[6] M.C. Rangel, L.S. Carvalho, P. Reyes, J.M. Parera, N.S. Fígoli, "noctane
reforming over alumina-supported Pt, Pt-Sn and Pt-W catalysts",
Catalysis Letters, vol. 64, pp. 171-178, 2000.
[7] S.T. Srinivas, L. Jhansi Lakshmi, N. Lingaiah, P.S. Sai Prasad, P. Kanta
Rao, "Selective vapour-phase hydrodechlorination of chlorobenzene
over alumina supported platinum bimetallic catalysts", Applied Catalysis
A: General, vol. 135, pp. L201-L207, 1996.
[8] J.L. Contreras, G.A. Fuentes, “Effect of tungsten on supported platinum
catalysts”, Studies in Surface Science and Catalysis, pp. 1195-1204,
1996.
[9] Y. Zhang, Y. Zhou, J. Shi, S. Zhou, X. Sheng, Z. Zhang, S. Xiang,
"Comparative study of bimetallic Pt-Sn catalysts supported on different
supports for propane dehydrogenation", Journal of Molecular Catalysis
A: Chemical, vol. 381, pp. 138-147, 2014.
[10] R. Thomas, F.P.J.M. Kerkhof, J.A. Moulijn, J. Medema, V.H.J. de Beer,
"On the formation of aluminum tungstate and its presence in tungsten
oxide on γ-alumina catalysts", Journal of Catalysis, vol. 61, pp. 559-561,
1980.
[11] B.M. Nagaraja, H. Jung, D.R. Yang, K.-D. Jung, "Effect of potassium
addition on bimetallic PtSn supported θ-Al2O3 catalyst for n-butane
dehydrogenation to olefins", Catalysis Today, vol. 232, pp. 40-52, 2014.
[12] A.D. Ballarini, C.G. Ricci, S.R. de Miguel, O.A. Scelza, "Use of
Al2O3–SnO2 as a support of Pt for selective dehydrogenation of light
paraffins", Catalysis Today, vol. 133–135, pp. 28-34, 2008.
[13] G. Del Angel, A. Bonilla, Y. Peña, J. Navarrete, J.L.G. Fierro, D.R.
Acosta, "Effect of lanthanum on the catalytic properties of PtSn/γ-
Al2O3 bimetallic catalysts prepared by successive impregnation and
controlled surface reaction", Journal of Catalysis, vol. 219, pp. 63-73,
2003.
[14] F.M. Dautzenberg, H.B.M. Wolters, "State of dispersion of platinum in
alumina-supported catalysts", Journal of Catalysis, vol. 51, pp. 26-39,
1978.
[15] G. Lietz, H. Lieske, H. Spindler, W. Hanke, J. Völter, "Reactions of
platinum in oxygen- and hydrogen-treated Ptγ-Al2O3 catalysts: II.
Ultraviolet-visible studies, sintering of platinum, and soluble platinum",
Journal of Catalysis, vol. 81, pp. 17-25, 1983.
[16] M. Larsson, M. Hultén, E.A. Blekkan, B. Andersson, "The Effect of
Reaction Conditions and Time on Stream on the Coke Formed during
Propane Dehydrogenation", Journal of Catalysis, vol. 164, pp. 44-53,
1996.
[17] P. Marécot, J.R. Mahoungou, J. Barbier, "Benzene hydrogenation on
platinum and iridium catalysts. Variation of the toxicity of sulfur with
the nature of the support", Applied Catalysis A: General, vol. 101, pp.
143-149, 1993.
[18] L. Bai, Y. Zhou, Y. Zhang, H. Liu, X. Sheng, "Effect of Magnesium
Addition to PtSnNa/ZSM-5 on the Catalytic Properties in the
Dehydrogenation of Propane", Industrial & Engineering Chemistry
Research, vol. 48, pp. 9885-9891, 2009.
[1] V.M. Therese Herauville, “Catalytic Dehydrogenation of Propane,
Oxidative and Non-Oxidative Dehydrogenation of Propane”, NTNUTrondheim,
Norwegian University of Science and Technology, 2012,
pp. 7–8.
[2] A.K. Aboul-Gheit, M.F. Menoufy, F.M. Ebeid, "Platinum-germanium
and platinum-tungsten on alumina catalysts for hydroconversion
reactions", Applied Catalysis, vol. 4, pp. 181-188, 1982.
[3] J.L. Contreras, G. Del Toro, I. Schifter, G.A. Fuentes, “TPR and activity
characterization of Pt-W/Al2O3 reforming catalysts”, Studies in Surface
Science and Catalysis, pp. 51-59, 1988.
[4] J.S. M'Boungou, L. Hilaire, G. Maire, F. Garin, "Role of tungsten in
supported Pt-W reforming catalysts Part II. Influence of the tungsten
loading and metal-support interactions effect", Catalysis Letters, vol. 10,
pp. 401-411, 1991.
[5] J.S. M'Boungou, J.L. Schmitt, G. Maire, F. Garin, "Role of tungsten in
supported Pt-W reforming catalysts Part I. Modification of platinum
activity and selectivity by addition of tungsten", Catalysis Letters, vol.
10, pp. 391-400, 1991.
[6] M.C. Rangel, L.S. Carvalho, P. Reyes, J.M. Parera, N.S. Fígoli, "noctane
reforming over alumina-supported Pt, Pt-Sn and Pt-W catalysts",
Catalysis Letters, vol. 64, pp. 171-178, 2000.
[7] S.T. Srinivas, L. Jhansi Lakshmi, N. Lingaiah, P.S. Sai Prasad, P. Kanta
Rao, "Selective vapour-phase hydrodechlorination of chlorobenzene
over alumina supported platinum bimetallic catalysts", Applied Catalysis
A: General, vol. 135, pp. L201-L207, 1996.
[8] J.L. Contreras, G.A. Fuentes, “Effect of tungsten on supported platinum
catalysts”, Studies in Surface Science and Catalysis, pp. 1195-1204,
1996.
[9] Y. Zhang, Y. Zhou, J. Shi, S. Zhou, X. Sheng, Z. Zhang, S. Xiang,
"Comparative study of bimetallic Pt-Sn catalysts supported on different
supports for propane dehydrogenation", Journal of Molecular Catalysis
A: Chemical, vol. 381, pp. 138-147, 2014.
[10] R. Thomas, F.P.J.M. Kerkhof, J.A. Moulijn, J. Medema, V.H.J. de Beer,
"On the formation of aluminum tungstate and its presence in tungsten
oxide on γ-alumina catalysts", Journal of Catalysis, vol. 61, pp. 559-561,
1980.
[11] B.M. Nagaraja, H. Jung, D.R. Yang, K.-D. Jung, "Effect of potassium
addition on bimetallic PtSn supported θ-Al2O3 catalyst for n-butane
dehydrogenation to olefins", Catalysis Today, vol. 232, pp. 40-52, 2014.
[12] A.D. Ballarini, C.G. Ricci, S.R. de Miguel, O.A. Scelza, "Use of
Al2O3–SnO2 as a support of Pt for selective dehydrogenation of light
paraffins", Catalysis Today, vol. 133–135, pp. 28-34, 2008.
[13] G. Del Angel, A. Bonilla, Y. Peña, J. Navarrete, J.L.G. Fierro, D.R.
Acosta, "Effect of lanthanum on the catalytic properties of PtSn/γ-
Al2O3 bimetallic catalysts prepared by successive impregnation and
controlled surface reaction", Journal of Catalysis, vol. 219, pp. 63-73,
2003.
[14] F.M. Dautzenberg, H.B.M. Wolters, "State of dispersion of platinum in
alumina-supported catalysts", Journal of Catalysis, vol. 51, pp. 26-39,
1978.
[15] G. Lietz, H. Lieske, H. Spindler, W. Hanke, J. Völter, "Reactions of
platinum in oxygen- and hydrogen-treated Ptγ-Al2O3 catalysts: II.
Ultraviolet-visible studies, sintering of platinum, and soluble platinum",
Journal of Catalysis, vol. 81, pp. 17-25, 1983.
[16] M. Larsson, M. Hultén, E.A. Blekkan, B. Andersson, "The Effect of
Reaction Conditions and Time on Stream on the Coke Formed during
Propane Dehydrogenation", Journal of Catalysis, vol. 164, pp. 44-53,
1996.
[17] P. Marécot, J.R. Mahoungou, J. Barbier, "Benzene hydrogenation on
platinum and iridium catalysts. Variation of the toxicity of sulfur with
the nature of the support", Applied Catalysis A: General, vol. 101, pp.
143-149, 1993.
[18] L. Bai, Y. Zhou, Y. Zhang, H. Liu, X. Sheng, "Effect of Magnesium
Addition to PtSnNa/ZSM-5 on the Catalytic Properties in the
Dehydrogenation of Propane", Industrial & Engineering Chemistry
Research, vol. 48, pp. 9885-9891, 2009.
@article{"International Journal of Earth, Energy and Environmental Sciences:69606", author = "N. Hataivichian and K. Suriye and S. Kunjara Na Ayudhya and P. Praserthdam and S. Phatanasri", title = "Propane Dehydrogenation with Better Stability by a Modified Pt-Based Catalyst", abstract = "The effect of transition metal doping on Pt/Al2O3
catalyst used in propane dehydrogenation reaction at 500°C was
studied. The preparation methods investigated were sequential
impregnation (Pt followed by the 2nd metal or the 2nd metal followed
by Pt) and co-impregnation. The metal contents of these catalysts
were fixed as the weight ratio of Pt per the 2nd metal of around 0.075.
These catalysts were characterized by N2-physisorption, TPR, COchemisorption
and NH3-TPD. It was found that the impregnated 2nd
metal had an effect upon reducibility of Pt due to its interaction with
transition metal-containing structure. This was in agreement with the
CO-chemisorption result that the presence of Pt metal, which is a
result from Pt species reduction, was decreased. The total acidity of
bimetallic catalysts is decreased but the strong acidity is slightly
increased. It was found that the stability of bimetallic catalysts
prepared by co-impregnation and sequential impregnation where the
2nd metal was impregnated before Pt were better than that of
monometallic catalyst (undoped Pt one) due to the forming of Pt sites
located on the transition metal-oxide modified surface. Among all
preparation methods, the sequential impregnation method- having Pt
impregnated before the 2nd metal gave the worst stability because this
catalyst lacked the modified Pt sites and some fraction of Pt sites was
covered by the 2nd metal.
", keywords = "Alumina, dehydrogenation, platinum, transition
metal.", volume = "9", number = "5", pages = "420-4", }
