Methane steam reforming intrinsic kinetics

Xu, Z. and Froment, G., Methane steam reforming, methanation and water-gas shift I. Intrinsic kinetics, AIChE., 35, 88,1989. 

Dicks A.L., Pointon K.D., Siddle A., 2000. Intrinsic reaction kinetics of methane steam reforming on a nickel/zirconia anode. Journal of Power Sources 86, 523-530. 

Xu J, Proment GF (1989). Methane Steam Reforming, methanation and Water-Gas Shift I. Intrinsic Kinetics. AIChE J 35(l) 88-96... 

Laosiripojana, N., Assabumrungrat, S. (2005). Methane steam reforming over Ni/ Ce-Zr02 catalyst influences of Ce-Zr02 support on reactivity, resistance toward carbon formation, and intrinsic reaction kinetics. Applied Catalysis A General, 290, 200-211. 

Soliman, M. A., Adris, A. M., Al-Ubaid, A. S., El-Nashaie, S. S. E. H. (2007). Intrinsic kinetics of nickel/calcium aluminate catalyst for methane steam reforming. Journal of Chemical Technology and Biotechnology, 55, 131—138. 

Methane steam reforming, methanation and water-gas shift. 1. Intrinsic kinetics. 

Wen CY, Yu YH (1966) Mechanics of fluidization. Chem Eng Prog Symp Ser 62 100-111 Wilke CR (1950) Diffusional properties of multicomponent gases. Chem Eng Prog 46 95-104 Williams FA (1958) Spray combustion tind atomization. Phys Fluids 1 541-545 Xu J, Froment GF (1989) Methane steam reforming, methanationand water-gas shift I. Intrinsic kinetics. AIChE J 35 88-96... 

All these factors are functions of the concentration of the chemical species, temperature and pressure of the system. At constant diffu-sionai resistance, the increase in the rate of chemical reaction decreases the effectiveness factor while al a constant intrinsic rate of reaction, the increase of the diffusional resistances decreases the effectiveness factor. Elnashaie et al. (1989a) showed that the effect of the diffusional resistances and the intrinsic rate of reactions are not sufficient to explain the behaviour of the effectiveness factor for reversible reactions and that the effect of the equilibrium constant should be introduced. They found that the effectiveness factor increases with the increase of the equilibrium constants and hence the behaviour of the effectiveness factor should be explained by the interaction of the effective diffusivities, intrinsic rates of reaction as well as the equilibrium constants. The equations of the dusty gas model for the steam reforming of methane in the porous catalyst pellet, are solved accurately using the global orthogonal collocation technique given in Appendix B. Kinetics and other physico-chemical parameters for the steam reforming case are summarized in Appendix A. 

Numaguchi, K., Kikuchi, T. (1988). Intrinsic kinetics and design simulation in a complex reaction network steam-methane reforming. Chemical Engineering Science, 43, 2295-2301. 

Steam methane reforming on nickel-based catalysts is the main process for industrial production of hydrogen or synthesis gas. Numerous studies have been reported on the kinetics of these reactions [1, 3, 59, 167]. Xu and Froment [167] investigated a large number of detailed mechanisms and proposed the intrinsic rate equations for the steam reforming of methane on the nickel-alumina catalyst, i.e., (4.193), (4.194) and (4.195) which have been widely used. These rate equations were thus used by... 

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