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희석반응 방식을 이용한 NaA형 미립 제올라이트 박막 제조 연구
김근수,김태환,추고연,이민수,이용택 한국공업화학회 2004 응용화학 Vol.8 No.1
In this work, zeolite membranes were prepared using a conventional hydrothermal method and clear solution method followed by characterization of permeation and separation factor. Especially submicron size zeolite powder was used as seed material on the alumina support and the temperature of synthesis was fixed at 90?. It was confirmed that the prepared zeolite membrane using clear solution method was more uniform compared with the hydrothermal synthesis. The zeolite membrane thickness of ca. 10㎛was obtained.
김근수,추고연,김태환,성재석,이용택,오숭호,이민수,최호상 한국공업화학회 2003 응용화학 Vol.7 No.1
Zeolite membrane was produced by hydrothermal synthesis on α ̄alumina substrate using clear solution method. Zeolite membrane can separate liquid phase reactants like a water/mehtanol system. The compogition ratio of raw materials. 90 Na_2O : 1 Al_2O_3 : 9 SiO_2 : 5760 H_2O was used for preparation of zeolite membrane. The deposition states of zeolite crystal on alumina substrate by change of aging time were analysed through XRD and SEM.
주조용 고인성 Al합금(NS-50)의 기계적 성질에 미치는 시효처리의 영향
김병수,박기원,김근수,이찬규 國立 昌原大學校 産業技術硏究所 1996 産技硏論文集 Vol.10 No.-
This study was investigated in effecting of solution treatment and aging treatment of NS-50 alloys through hardness test, tensile test, and observation micro structure. Seaching for the best heat treatment conditions of improving mechanical properties.