Synthesis of SiO.sub.2 membrane on porous support and method of use of same
AssigneeCalifornia Institute of Technology
InventorsGeorge R. Gavalas, Constantin E. Megiris
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Abstract
A method for lining a porous tube (5) with a film (11) of SiO.sub.2 is described. The treated tube may be used to separate hydrogen from reaction mixtures such as those resulting from the water-gas shift reaction or the catalytic decomposition of hydrogen sulfide.
Claims14
A method of separating hydrogen from a gaseous mixture comprising passing the mixture into a membrane comprising a porous support tube having a non-porous film of amorphous SiO.sub.2 in the pores of said tube, said film having been formed by flowing a first reactant inside said support tube and a second reactant outside said support tube, and causing said reactants to diffuse in opposite directions and meet within said pores.
A membrane comprising a porous support tube having a non-porous film of amorphous SiO.sub.2 in the pores of said tube, said film having been formed by flowing a first reactant inside said support tube and a second reactant outside said support tube, and causing said reactants to diffuse in opposite directions and meet within said pores.
A method for depositing a thin film of SiO.sub.2 within the porous walls of a support tube comprising passing a first fluid reactant into the support tube and into pores in the support tube, and a second fluid reactant into an annular space on the outside of the support tube and into the pores of said support tube to contact and react with the first reactant, the first reactant and the second reactant being selected to form said thin film of SiO.sub.2.
Dependencies are inferred from the claim text.