THE EFFECT OF NO AND O2 CONCENTRATION IN A THREE COMPONENT CO-NOO2 REACTION ON CATALYTIC SURFACE APPLYING THE PRECURSOR MECHANISM: A COMPUTER SIMULATION STUDY

Authors

  • A. U. Qaisrani Department of Physics, Gomal University, Dera Ismail Khan, Pakistan
  • M. Khalid Department of Physics, Gomal University, Dera Ismail Khan, Pakistan

Abstract

We have studied a model for the three component CO-NO-O2 catalytic reaction on hexagonal surface through Monte Carlo simulations. This study is based on non-thermal process, which involves the precursor motion of CO molecule. The effect of ratio NO:O2 on the catalytic reduction of NO into N and O and oxidation of CO to CO2 are introduced. Many observations are recorded in the three component reaction. It is observed that with the inclusion of precursor mechanism with the Langmuir-Hinshelwood (LH) mechanism, the reactive window gets enhanced. The phase diagrams of the surface coverage with CO, N, O and the steady state production of CO2 and N2 are shown as a function of partial pressure of CO in the gas phase.

References

R. M. Ziff, E. Gulari and Y. Barshad, Phys.

Rev. Lett. 56 (1986) 2553.

M. Dumont et al., J. Catal. 122 (1990) 95.

F. Bagnoli et al., J. Chem. Phys. 94 (1991)

P. Meakin and D.J. Scalapino, J. Chem.

Phys. 87 (1987) 731.

K. Yaldram and M. A. Khan, J. Catal. 131

(1991) 369.

K. Yaldram and M.A. Khan, J. Catal. 136

(1992) 279.

J. Cortes, H. Puschman and E. J. Valencia,

Chem.Phys. 109 (1998) 6086.

A.G. Dickman, Phys. Rev. E 59 (1993) 6361.

K. Yaldram, K.M. Khan, N. Ahmad and

M.A. Khan, J. Phys A: Math. Gen. 26L (1993)

B.J. Brosilow and R.M. Ziff, J. Catal.136

(1992) 275.

B. Meng, W.H. Weinberg and J. W. Evan,

Chem. Phys. 101 (1994) 3234.

N.O. Wolf, D.R. Burgess and D.K. Hoffman,

Surf. Sci. 100 (1980) 453.

S.P. Sing-Boparai, M. Bowker and D. A. King,

Surf. Sci. 53 (1975) 55.

G. Comsa, R. David and B. J. Schumacher,

Surf. Sci. 95 (1980) L210.

J. Harris , B. Kasemo and E. Tornqvist, Surf.

Sci. 105 (1981) L281.

B. Jackson and M. Person, J. Chem. Phy.

(1995) 6257.

K. Yaldram, K.M. Khan, N. Ahmad and M.A.

Khan, J. Catal. 147 (1994) 96.

W. Ahmad and E. V. Albano, Appl. Surf. Sci.

(2008) 2436.

A. Basit and W. Ahmad, J. Korean. Phys.

Soc. 59 (2011) 134.

K.M. Khan, K. Yaldram, N. Ahmed and

Q. Haque, Physica A 268 (1999) 89.

G.W. Graham, A. D. Logan and M. Shelef,

J. Phys. Chem. 97 (1993) 5445.

Downloads

Published

03-12-2012

How to Cite

[1]
A. U. Qaisrani and M. Khalid, “THE EFFECT OF NO AND O2 CONCENTRATION IN A THREE COMPONENT CO-NOO2 REACTION ON CATALYTIC SURFACE APPLYING THE PRECURSOR MECHANISM: A COMPUTER SIMULATION STUDY”, The Nucleus, vol. 49, no. 4, pp. 247–253, Dec. 2012.

Issue

Section

Articles

Most read articles by the same author(s)