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Acid site accessibility in sulfonated polystyrene acid catalysts: Calorimetric study of NH3 adsorption from flowing gas stream

Siril, P.F. and Brown, D.R. (2006) Acid site accessibility in sulfonated polystyrene acid catalysts: Calorimetric study of NH3 adsorption from flowing gas stream. Journal of Molecular Catalysis A: Chemical, 252 (1-2). pp. 125-131. ISSN 1381-1169

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Abstract

Calorimetric pulsed NH3 adsorption measurements from a flowing carrier gas have been made on sulfonated poly(styrene-co-divinylbenzene) resin acid catalysts to characterise surface acidity in general and acid site accessibility in particular. The adsorption and enthalpy profiles associated with each pulse of NH3 show distinct features associated with relatively weak and reversible adsorption of NH3 followed by strongly exothermic reaction with sulfonic acid sites and irreversible adsorption. The rate at which NH3 diffuses from its initial adsorption site to an acid site is shown to depend on catalyst particle size, adsorption temperature and the proportion of unreacted acid sites. By varying the contact time of NH3 with the catalyst the reversibility of the initial NH3 adsorption is demonstrated and an increasing number of the acid sites within the polymer matrix are shown to become completely inaccessible to NH3 as the contact time is reduced.

Item Type: Article
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
Schools: School of Applied Sciences
School of Applied Sciences > Materials and Catalysis Research Centre
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[1] A. Renhfiger and U. Hoffman, Chem. Eng. Sci. 45 (1990) (6), p. 1619.

[2] M. Iborra, J.F. Izquierdo, F. Cunill and J. Tajero, Ind. Eng. Chem. Res. 31 (1992), p. 1840. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (12)

[3] N. Boz, T. Dogu, K. Murtezaoglu and G. Dogu, Appl. Catal. A 268 (2004), p. 175. SummaryPlus | Full Text + Links | PDF (211 K) | View Record in Scopus | Cited By in Scopus (8)

[4] P.K. Pakkonen and O.I. Krause, React. Funt. Polym. 55 (2003), p. 139.

[5] Z.P. Xu and K.T. Chuang, Chem. Eng. Sci. 52 (1997) (17), p. 3011. Abstract | Abstract + References | PDF (510 K) | View Record in Scopus | Cited By in Scopus (17)

[6] W.T. Liu and C.S. Tan, Ind. Eng. Chem. Res. 40 (2001), p. 3281. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (29)

[7] M.T. Sanz, R. Murga, S. Beltran, J.T. Cabezars and J. Coca, Ind. Eng. Chem. Res. 43 (2004), p. 2049. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (12)

[8] M.T. Sanz, R. Murga, S. Beltran and J.T. Cabezars, Ind. Eng. Chem. Res. 41 (2002), p. 512. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (25)

[9] K. Jerabek, Z. Prakop and A. Revillon, React. Funct. Polym. 33 (1997), p. 103. View Record in Scopus | Cited By in Scopus (4)

[10] S. Steinigweg and J. Gmehlong, Ind. Eng. Chem. Res. 41 (2002), p. 5483.

[11] C.M. Zhang, A.A. Adesina and M.S. Wainwright, Chem. Eng. Proc. Res. 42 (2003), p. 985. SummaryPlus | Full Text + Links | PDF (254 K) | View Record in Scopus | Cited By in Scopus (6)

[12] S.K. Ihm, M.J. Chung and K.Y. Park, Ind. Eng. Chem. Res. 27 (1988), p. 41. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (22)

[13] M. Hart, G. Fuller, D.R. Brown, C. Park, M.A. Keane, J.A. Dale, C.M. Fougret and R.W. Cockman, Catal. Lett. 72 (2001) (3/4), p. 135. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (12)

[14] M. Hart, G. Fuller, D.R. Brown, J.A. Dale and S. Plant, J. Mol. Catal. 182/183A (2002), p. 439. SummaryPlus | Full Text + Links | PDF (77 K) | View Record in Scopus | Cited By in Scopus (13)

[15] G.D. Yadav and R.D. Bhagat, J. Mol. Catal. 235A (2005), p. 98. SummaryPlus | Full Text + Links | PDF (250 K) | View Record in Scopus | Cited By in Scopus (5)

[16] J.S. Yadav, B.V.S. Reddy, B. Eshwaraiah and K. Anirudha, Green Chem. 4 (2003), p. 557.

[17] C. Ramesh, J. Banerjee, R. Pal and B. Das, Adv. Synth. Catal. 345 (2003), p. 557. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (43)

[18] P. Gogoi, Synlett 14 (2005), p. 2263. Full Text via CrossRef | View Record in Scopus | Cited By in Scopus (4)

[19] S.P. Felix, C. Savill-Jowitt and D.R. Brown, Thermochim. Acta 433 (2005), p. 59. SummaryPlus | Full Text + Links | PDF (215 K) | View Record in Scopus | Cited By in Scopus (4)

[20] D.R. Brown and C.N. Rhodes, Thermochim. Acta 294 (1997), p. 33. Abstract | Abstract + References | PDF (325 K) | View Record in Scopus | Cited By in Scopus (13)

[21] C.N. Rhodes, D.R. Brown, S. Plant and J.A. Dale, React. Funct. Polym. 40 (1999), p. 187. SummaryPlus | Full Text + Links | PDF (105 K) | View Record in Scopus | Cited By in Scopus (16)

[22] M. O’Neil and J. Philips, J. Phys. Chem. 91 (1987), p. 2867.

[23] B. Corain, M. Zecca and K. Jerabek, J. Mol. Catal. 177A (2001), p. 3. SummaryPlus | Full Text + Links | PDF (284 K) | View Record in Scopus | Cited By in Scopus (30)

Depositing User: Sara Taylor
Date Deposited: 14 Mar 2008 16:30
Last Modified: 17 Oct 2008 15:15
URI: http://eprints.hud.ac.uk/id/eprint/584

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