The stability of Au supported catalysts for the water–gas shift reaction was studied. Two types of continuous flow experiments were performed, i.e. temperature-programmed and long-term isothermal stability test. The highest initial rate was obtained for catalysts used without any calcination or other high-temperature treatment. The continuous flow experiments showed that all Au/Fe2O3 catalysts deactivated under water–gas shift conditions. The deactivation trend occurred independently on the Au loading, the method of preparation, calcination or high-temperature treatment.
The various causes on the deactivation, i.e. the formation of carbon-containing species, the change of Au particles or changes of the support were investigated in terms of DRIFTS coupled with MS, TGA, TEM, N2 physisorption, ICP, and XRD. Even though stable carbonate and carbonyl surface species were found on the spent catalysts, the quantity of these species indicated that they are not the main cause of the deactivation. Furthermore, the agglomeration of the Au particles was not severe and was not observed for all Au catalysts. The deactivation of Au/Fe2O3 was mainly caused by the change of the support. A significant reduction of the surface area of the support is taking place during the water–gas shift reaction as a function of time on stream. This decrease of the surface area can almost solely explain the decrease on the catalytic activity.
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D.L. Trimm (2005) Appl. Catal. A 296 1 Occurrence Handle10.1016/j.apcata.2005.07.011 Occurrence Handle1:CAS:528:DC%2BD2MXht1aqt7fN
C. Rhodes G.J. Hutchings A.M. Ward (1995) Catal. Today 23 43 Occurrence Handle10.1016/0920-5861(94)00135-O Occurrence Handle1:CAS:528:DyaK2MXjtFSitbc%3D
W. Ruettinger O. Ilinich R.J. Farrauto (2003) J. Power Sources 118 61 Occurrence Handle10.1016/S0378-7753(03)00062-4 Occurrence Handle1:CAS:528:DC%2BD3sXjvVamtbc%3D
A. Kuperman and M.E. Moir, US Patent: US2005276741 (2005)
D. Andreeva V. Idakiev T. Tabakova L. Ilieva P. Falaras A. Bourlinos A Travlos (2002) Catal. Today 72 51 Occurrence Handle10.1016/S0920-5861(01)00477-1 Occurrence Handle1:CAS:528:DC%2BD38XisV2jtLk%3D
Q. Fu W. Deng H. Saltsburg M. Flytzani-Stephanopoulos (2005) Appl. Catal. B 56 57 Occurrence Handle10.1016/j.apcatb.2004.07.015 Occurrence Handle1:CAS:528:DC%2BD2MXhtVKnsLg%3D
T. Tabakova V. Idakiev D. Andreeva I. Mitov (2000) Appl. Catal. A 202 91 Occurrence Handle10.1016/S0926-860X(00)00463-4 Occurrence Handle1:CAS:528:DC%2BD3cXjs1SqtLc%3D
A. Venugopal M.S. Scurrell (2003) Appl. Catal. A 245 137 Occurrence Handle10.1016/S0926-860X(02)00647-6 Occurrence Handle1:CAS:528:DC%2BD3sXjvVOitrc%3D
A. Venugopal J. Aluha D. Mogano M.S. Scurrell (2003) Appl. Catal. A 245 49
J. Hua Q. Zheng Y. Zheng K. Wei X. Lin (2005) Catal. Lett. 102 99 Occurrence Handle10.1007/s10562-005-5209-3 Occurrence Handle1:CAS:528:DC%2BD2MXlt12kurs%3D
G.C. Bond (2002) Catal. Today 72 5 Occurrence Handle10.1016/S0920-5861(01)00522-3 Occurrence Handle1:CAS:528:DC%2BD38XisV2jtLw%3D
C.H. Kim L.T. Thompson (2005) J. Catal. 230 66 Occurrence Handle10.1016/j.jcat.2004.10.004 Occurrence Handle1:CAS:528:DC%2BD2MXht1Kqu7s%3D
R. Hughes, Deactivation of Catalysts (Academic Press, 1984)
C.H. Bartholomew (2001) Appl. Catal. A 212 17 Occurrence Handle10.1016/S0926-860X(00)00843-7 Occurrence Handle1:CAS:528:DC%2BD3MXjtlSrtb8%3D
J.A. Moulijn A.E. Diepen Particlevan F. Kapteijn (2001) Appl. Catal. A 212 3 Occurrence Handle10.1016/S0926-860X(00)00842-5 Occurrence Handle1:CAS:528:DC%2BD3MXjtlSrtb4%3D
L. Luengnaruemitchai Osuwan (2003) Catal. Commun. 4 215 Occurrence Handle1:CAS:528:DC%2BD3sXktVGrs7o%3D
C.W. Corti R.J. Holliday D.T. Thompson (2005) Appl. Catal. A 291 253 Occurrence Handle10.1016/j.apcata.2005.01.051 Occurrence Handle1:CAS:528:DC%2BD2MXosVajsrk%3D
N.A. Hodge C.J. Kiely R. Whyman M.R.H. Siddiqui G.J. Hutchings Q.A. Pankhurst F.E. Wagner R.R. Rajaram S.E. Golunski (2002) Catal. Today 72 133 Occurrence Handle10.1016/S0920-5861(01)00487-4 Occurrence Handle1:CAS:528:DC%2BD38XisV2jtbk%3D
R.M. Finch N.A. Hodge G.J. Hutchings A. Meagher Q.A. Pankhurst F.E. Siddiqui M.R.H. Wagner R. Whyman (1999) Phys. Chem. Chem. Phys. 1 485 Occurrence Handle10.1039/a808208a Occurrence Handle1:CAS:528:DyaK1MXhtV2isbc%3D
S.T. Daniells A.R. Overweg M. Makkee J.A. Moulijn (2005) J. Catal. 230 52 Occurrence Handle10.1016/j.jcat.2004.11.020 Occurrence Handle1:CAS:528:DC%2BD2MXht1Kqu7o%3D
F. Moreau G.C. Bond A.O. Taylor (2005) J. Catal. 231 105 Occurrence Handle10.1016/j.jcat.2005.01.030 Occurrence Handle1:CAS:528:DC%2BD2MXisFyitb0%3D
D. Cameron R. Holliday D. Thompson (2003) J. Power Sources 118 298 Occurrence Handle10.1016/S0378-7753(03)00074-0 Occurrence Handle1:CAS:528:DC%2BD3sXjvValsrY%3D
J. Pérez-Ramírez R.J. Berger G. Mul F. Kapteijn J.A. Moulijn (2000) Catal. Today 60 93 Occurrence Handle10.1016/S0920-5861(00)00321-7
N.B. Colthup, L.H. Daly, S.E. Wiberley, Introduction to Infrared and Raman Spectroscopy, third ed. (Academic Press, 1990)
B. Aeijelts Averink Silberova G. Mul M. Makkee J.A. Moulijn (2006) J. Catal. 243 171 Occurrence Handle10.1016/j.jcat.2006.07.010 Occurrence Handle1:CAS:528:DC%2BD28XptlGhtLY%3D
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Silberova, B.A.A., Makkee, M. & Moulijn, J.A. Mechanism of deactivation of Au/Fe2O3 catalysts under water–gas shift conditions. Top Catal 44, 209–221 (2007). https://doi.org/10.1007/s11244-007-0294-8
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DOI: https://doi.org/10.1007/s11244-007-0294-8