Diffusion in multicomponent gas adsorption on MSC5A, chromatographic study
1. Introduction The combination of chromatographic method and moment analysis of the response peaks is one of the useful techniques to study adsorption equilibrium and adsorption rate. Perturbation chromatography with the mixed multi component adsorbate gas carrier (two adsorbates) has been applied to several studies on adsorption. In this work, perturbation chromatography with multi component gas carrier (two adsorbates with inert gas) and non-equilibrium thermodynamics liner law was applied for discussion of the interference effect and the displacement effect (those are cross effects) on mass transfer in multi component gas adsorption. Moment analysis method and stop & go simulation method were utilized to obtain each mass transfer parameters of adsorbate gases. Dependency of micropore diffusion on amount adsorbed and correlation of micropore diffusion with chemical potential driving force for microporous adsorbent were discussed. Also, cross effect were discussed. Ruthven already pointed the dependency of micropore diffusivity on amount adsorbed in single component adsorption. Tondeur et al gave general background on multi component perturbation chromatography for the first moment only.
A chromatographic study of the diffusion of N2,CH4 and binary CH4‐N2 mixtures in 4A molecular sieve
The kinetics and equilibrium of sorption of CH4, N2 and binary CH4–N2 mixtures in 4A molecular sieve have been studied by a chromatographic method. The equilibrium isotherms and zeolitic diffusivities, determined with a helium carrier, show good agreement with previous gravimetric data. Counter-diffusion in the binary adsorbed phase was investigated using a mixed carrier gas and following the response to a small step change from a previously established equilibrium position. The dynamic response curves for the binary system could be satisfactorily interpreted on the assumption that both components in the mixture diffuse independently with the same intrinsic mobilities as for the single component systems. 
 
 
 
On a etudie, en employant une methode chromatographique, la cinetique et l'equilibre de sorption de CH4 et N2 et de melanges binaires de ces deux gaz, sur un tamis moleculaire 4A. Les isothermes d'equilibre et les diffusivites dans les zeolithes, qu'on a determinees avec de l'helium comme gaz porteur, ont bien concorde avec les resultats gravimetriques anterieurs. On a etudie la contre-diffusion dans la phase binaire adsorbee, en employant un gaz porteur mixte et en suivant la reponse a une demande echelon de faible amplitude par rapport a une position d'equilibre etablie anterieurement. On a pu interpreter d'une maniere satisfaisante les courbes de reponse dynamiques correspondant au systeme binaire, en supposant que les deux composants dud melange diffusent independamment avec les měmes mobilites intrinseques que dans le systeme a un seul composant.
Research on Control and Planning of Soft-Wing UAV for Haze Removal
The existence of fog and haze has caused great pollution to the environment. The research of removing haze is a hot topic in recent years. In this paper, a special haze removal algorithm based on Soft- Wing UAVis proposed. In this algorithm, two track control strategies are designed based on the Soft-Wing UAV model transfer function. A SIMULINK platform based mathematical model of Soft-Wing UAV is built to testified effectiveness of the two track control strategies. An autonomous ergodic-planning algorithm with greedy strategy and foldback algorithm for Soft-Wing UAV is designed. Within the algorithm, the haze regional has been modelled, the cost matrix is constructed, and the planning and ergodic strategy is proposed. Finally, the experimental results validates the reliability of the algorithm in the application of haze removal with the proposed evaluation Index.