Process for preparing a composite inorganic membrane for hydroge

Details Process for preparing a composite inorganic membrane for hydroge Process for preparing a composite inorganic membrane for hydroge

1996-06-21

1998-07-21

Spitzer, Robert

Gas separation: apparatus

Apparatus for selective diffusion of gases

Plural layers

95 56, 55524, 55DIG5, B01D 5322, B01D 7102

Patent

active

057829594

ABSTRACT:
The present invention relates to a process for preparing a composite inorganic membrane for hydrogen separation, more specifically, to a process for preparing a composite inorganic membrane for hydrogen separation which comprises formation of intermediate layer in an asymmetric porous alumina support by sol-gel method, and modification of pores of the alumina membrane by soaking palladium acetate solution into the pores and vapor-deposition to enhance the permeability and selectivity for hydrogen. A process for preparing an inorganic membrane for hydrogen separation comprises the steps of: (i) dip-coating an alumina support in alumina sol containing a palladium precursor which is uniformly dispersed while vacuumizing the inside of the support, to form an intermediate layer of thin palladium impregnated alumina membrane; (ii) soaking the membrane obtained in step(i) in the palladium precursor solution, drying it under vacuum for 2 to 4 hours, and vaporizing the soaked materials with the gradual increase of temperature up to 170.degree. to 190.degree. C. for the vaporized palladium precursor to be deposited onto the pores; and, (iii) heating the alumina membrane whose pores are deposited with palladium at 290.degree. to 310.degree. C. while vacuumizing the inside of the support.

REFERENCES:
patent: 4349356 (1982-09-01), Wakao
patent: 4689150 (1987-08-01), Abe et al.
patent: 5139540 (1992-08-01), Najjar et al.
patent: 5160352 (1992-11-01), Najjar et al.
patent: 5181941 (1993-01-01), Najjar et al.
patent: 5183482 (1993-02-01), Najjar et al.
patent: 5205841 (1993-04-01), Vaiman
patent: 5217506 (1993-06-01), Edlund et al.
patent: 5259870 (1993-11-01), Edlund
patent: 5342431 (1994-08-01), Anderson et al.
patent: 5393325 (1995-02-01), Edlund
patent: 5415891 (1995-05-01), Liu et al.
patent: 5429743 (1995-07-01), Geus et al.
patent: 5487774 (1996-01-01), Peterson et sl.
patent: 5498278 (1996-03-01), Edlund
patent: 5614001 (1997-03-01), Kosaka et al.
S.Y. Lee et al., Preparation of Sol-Gel Driven Alumina Membrane Modified by Soaking and Vapor-Deposition Method, J. Membrane Sci., 108:97-105(1995).

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