METHOD FOR PREPARING INORGANIC MATERIAL MEMBRANE FOR HYDROGEN SEPARATION MEMBRANE,申请号KR19950017060-传众专利搜索

METHOD FOR PREPARING INORGANIC MATERIAL MEMBRANE FOR HYDROGEN SEPARATION MEMBRANE

申请公布号：KR0158431(B1)

申请号：KR19950017060

申请日期：1995.06.23

申请公布日期：1998.11.16

申请人：

KAIST

发明人：YANG, SEUNG-MAN;PARK, SEUNG-BIN;LEE, SEUNG-JIN;LEE, SANG-YEUN

分类号：B01D53/22;B01D71/02;C01B3/50;(IPC1-7):B01D71/02

主分类号：B01D53/22

摘要：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 DEG to 190 DEG 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 DEG to 310 DEG C. while vacuumizing the inside of the support.