High CO2 permeability in supported molten-salt membranes with highly dense and aligned pores produced by directional solidification

Tortuosity of Aligned Channels in Alumina Membranes Produced by Vacuum-Induced Surface Directional Freezing

Vacuum-induced surface freezing of colloidal alumina was used to produce membranes that have elongated, aligned channels and, hence, are tortuous in the direction perpendicular to ice crystal growth. The effective tortuosity of the membranes was measured by steady-state diffusion of a solute, methylene blue. The resulting diffusion profiles show an initial step-increase in amount of dye reachin...

Directional Solidification of Salt Water: Deep and Shallow Cells

The common observation of cellular substructure ((1 + at the seaice-ocean interface is explained by modelling the natural solidification of seawater as that of a dilute H20-NaCl solution. Linear and nonlinear perturbation theories reveal that the onedimensional planar steady state is morphologically unstable, and a bifurcation to cells occurs in geophysically relevant growth regimes. We compute...

CO2 Permeability of Biological Membranes and Role of CO2 Channels

We summarize here, mainly for mammalian systems, the present knowledge of (a) the membrane CO₂ permeabilities in various tissues; (b) the physiological significance of the value of the CO₂ permeability;

Supported Dense Ceramic Membranes for Oxygen Separation

High Purity Aluminium-lithium Master Alloy by Molten Salt Electrolysis

The aim of t h i s work i s t o develop the economical product ion process of t h e AI-Li master a l l o y f r e e from m e t a l l i c sodium, calcium and potassium. Th i s master a l l o y can be used f o r aluminium-li thium a l l o y s f o r s t r u c t u a l m a t e r i a l s of a i r c r a f t s , automobi les and robots . Moreover t h e Al-Li master a l l o y with l i t h ium con ten t o...