ISSN:
0001-1541
Keywords:
Chemistry
;
Chemical Engineering
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
Unsteady diffusion in the system methane-argon-hydrogen was studied in a Loschmidt apparatus with large changes in concentration. The mean concentration-time history was predicted within experimental error by the linearized equations of multicomponent mass transfer. In the calculations the Stefan-Maxwell equations were used to obtain the diffusivity matrix which was evaluated at the equilibrium concentration.Digital computer solutions to the nonlinear differential equations were also obtained for various systems and boundary conditions. The fluxes predicted by the linearized equations with the diffusivity matrix evaluated at the arithmetic average of the initial and boundary concentrations were in all cases within 5% of the numerical predictions.
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/aic.690130518
