Abstract
Evidence for adsorption assisted desorption of 13NH3 in the presence of gas phase ammonia on γ-alumina is presented. Due to lateral interactions with physisorbed ammonia, the adsorption enthalpy of ammonia on γ-alumina was measured to be −11 ± 1kJ/mol, using a 13NH3/14NH3 isotopic exchange method. This adsorption/desorption exchange was monitored with positron emission profiling. Infrared spectroscopy showed ammonia to exchange preferentially on the Lewis acid sites of alumina.
Similar content being viewed by others
References
T. Yamada, T. Onishi and K. Tamaru, Surf. Sci. 133 (1983) 533.
T. Yamada and K. Tamaru, Surf. Sci. 138 (1984) L155.
T. Yamada and K. Tamaru, Surf. Sci. 146 (1984) 341.
K. Tamaru, Colloids Surf. 38 (1989) 125.
K. Tamaru, Appl. Catal. A 151 (1997) 167.
M. Xu and E.J. Iglesia, Phys. Chem. B 102 (1998) 961.
M. Boudart, J. Mol. Catal. A 141 (1999) 1.
S.J. Lombardo and A.T. Bell, Surf. Sci. 245 (1991) 213.
J.T. YatesJr. and D.W. Goodman, J. Chem. Phys. 73 (1980) 5371.
M. Sushchikh, J. Lauterbach and W.H. Weinberg, Surf. Sci. 393 (1997) 135.
B.G. Anderson, R.A. van Santen and L.J. van IJzendoorn, Appl. Catal. A 160 (1997) 125.
B.G. Anderson, R.A. van Santen and A.M. de Jong, Top. Catal. 8 (1999) 125.
G. Jonkers, K.A. Vonkeman, S.W.A. van der Wal and R.A. van Santen, Nature 355 (1992) 63.
W. Vaalburg, W.A.A. Kamphuis, H.D. Beerling van der Molen, S. Reiffers, A. Rijskamp and M.G. Woldring, Int. J. Appl. Radiat. Isot. 26 (1975) 316.
K. Suzuki and Y. Yoshida, Appl. Radiat. Isot. 50 (1999) 497.
D.P. Sobczyk, J. van Grondelle, A.M. de Jong, M.J.A. de Voigt and R.A. van Santen, Appl. Radiat. Isot. 57 (2002) 201.
J.B. Peri, J. Phys. Chem. 69 (1965) 220.
H. Knözinger and P. Ratnasamy, Catal. Rev.-Sci. Eng. 17 (1978) 31.
H. Kawakami and S. Yoshida, J. Chem. Soc. Faraday Trans. 2 82 (1986) 1385.
O. Kresnawahjuesa, R.J. Gorte, D. de Oliveira and L.Y. Lau, Catal. Lett. 3 (2002) 155.
A.V. Kiselev and V.I. Lygin, Infrared Spectra of Surface Compounds (John Wiley &;; Sons, New York, 1975).
G. Centi and S. Perathoner, Catal. Rev.-Sci. Eng. 40 (1998) 175.
X. Liu and R.E. Truitt, J. Am. Chem. Soc. 119 (1997) 9856.
H. Knözinger, H. Krietenbrink and P. Ratnasamy, J. Catal. 48 (1977) 436.
J. Medema, J.J.G.M. van Bokhoven and A.E.T. Kuiper, J. Catal. 25 (1972) 238.
H. Dunken, P. Fink and E. Pilz, Chem. Technol. 18 (1966) 490.
J.A.R. van Veen, G. Jonkers and W.H. Hesselink, J. Chem. Soc. Faraday Trans. 1 85 (1989) 389.
Y. Amenomiya, Chem. Technol. 6 (1976) 128.
T. Masuda, Y. Fujikata, H. Ikeda, S. Matsushita and K. Hashimoto, Appl. Catal. A 162 (1997) 29.
T. Masuda, Y. Fujikata, S.R. Mukai and K. Hashimoto, Appl. Catal. A 165 (1997) 57.
R.J. Gorte, Catal. Today 28 (1996) 405.
R.J. Gorte, J. Catal. 75 (1982) 164.
R.A. Demmin and R.J. Gorte, J. Catal. 90 (1984) 32.
Y. Amenomiya, J. Catal. 46 (1977) 326.
J.A.R. van Veen, P.A.J.M. Hendriks, E.J.G.M. Romers and R.R. Andréa, J. Phys. Chem. 94 (1990) 5275.
D.M. Ruthven, Principles of Adsorption Adsorption Processes (John Wiley &;; Sons, New York,, 1984).
J. Kärger and D.M. Ruthven, Diffusion in Zeolites and Other Microporous Solids (John Wiley &;; Sons, New York, 1992)).
Y. Amenomiya, J.H.B. Chenier and R.J. Cvetanovic, J. Phys. Chem. 68 (1964) 52.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Sobczyk, D., Hesen, J., van Grondelle, J. et al. Adsorption Assisted Desorption of NH3 on γ-Alumina Studied with Positron Emission Profiling. Catalysis Letters 94, 37–43 (2004). https://doi.org/10.1023/B:CATL.0000019328.16620.1d
Issue Date:
DOI: https://doi.org/10.1023/B:CATL.0000019328.16620.1d