“…with the following boundary conditions uð0Þ ¼ 1, uð1Þ ¼ k, v 0 ð0Þ ¼ 0 and vð1Þ ¼ 1: Here u(x) stands for the CO2 concentration and v(x) is the PGE concentration. The normalized system parameters are a 1 , a 2 , b 1 and b 2 : The carbon dioxide concentration at catalyst surface is denoted by k Finally, the dimensionless distance from the centre is x (Duan et al, 2015). Adomian (1994), Duan et al (2015), Biazar, Babolian, and Islam (2004), have used the Adomian decomposition method to develop a solution of this problem.…”