ISSN : 1226-0088(Print)
ISSN : 2288-7253(Online)
ISSN : 2288-7253(Online)
Membrane Journal Vol.25 No.2 pp.191-201
DOI : https://doi.org/10.14579/MEMBRANE_JOURNAL.2015.25.2.191
DOI : https://doi.org/10.14579/MEMBRANE_JOURNAL.2015.25.2.191
Preparation of TiCoxFe1-x(x=0.50~1.00) System Metal Membrane for Hydrogen Separation
April 10, 2015
April 27, 2015
April 28, 2015
Abstract
We have studied on the preparation of TiCoxFe1-x(x=0.50~1.00) system alloy, the characteristics of TiCoxFe1-x(x=0.50~1.00) system alloy by X-ray diffractometer (XRD), pressure composition temperature (PCT) curve, scanning electron microscopy (SEM) and the H2-N2 gas mixture separation of TiCoxFe1-x(x=0.50~1.00)- stainless steel (SS) composite membranes. The formation of TiCoxFe1-x(x=0.50~1.00) system alloys with cubic crystal same as TiCo was confirmed by X-ray diffractometer. TiCoxFe1-x(x=0.50~1.00) system alloys showed the hysteresis at 120°C. As the Fe content of TiCoxFe1-x(x=0.50~1.00) system alloys increased, the hysteresis was increased both range x=0.90~1.00 and x=0.55~0.60, and the range x=0.55~0.90 gave decreased hysteresis. TiCo0.55Fe0.45 alloy was the one showed the lowest hysteresis among them. The lowest value of hydrogen permeation pressure of TiCoxFe1-x(x=0.50~1.00)-SS composite membrane was TiCo0.55Fe0.45-SS composite membrane with the value of 2.5 atm at 120°C; otherwise, TiCo0.90Fe0.10-SS composite had the highest pressure value among the membranes with the value of 10 atm. TiCo0.55Fe0.45-SS composite membrane was the best to separate the H2-N2 gas mixture excellently among the TiCoxFe1-x(x=0.50~1.00)-SS composite membranes since TiCo0.55Fe0.45 had the least hysteresis, and hydrogen permeation pressure was the lowest with value of 2.5 atm.
수소분리용 TiCoxFe1-x(x=0.50~1.00)계 금속막 제조
초록
TiCoxFe1-x(x=0.50~1.00)계 합금을 제조하고, 합금의 특성을 X-ray diffractometer (XRD), pressure composition temperature (PCT)곡선, scanning electron microscopy (SEM)에 의해 조사하였고, TiCoxFe1-x(x=0.50~1.00)-stainless steel (SS) 복합막에 대해 H2-N2 혼합기체분리실험을 하였다. X-선 회절분석에 의하면 TiCoxFe1-x(x=0.50~1.00)계 합금의 결정구조는 TiCo와 같은 입방정구조이었다. TiCoxFe1-x(x=0.50~1.00)계 합금은 120°C에서 hysteresis현상을 나타내었고, 합금 중 Fe의 양이 증가함에 따라 x=0.90~1.00과 0.50~0.55 범위에서는 hysteresis가 증가하였고, x=0.55~0.90 범위에서는 감소하였다. 가장 작은 hysteresis를 나타낸 합금은 TiCo0.55Fe0.45이었다. 120°C에서 TiCoxFe1-x(x=0.50~1.00)-SS 복합막의 수소투과압력의 최저값은 TiCo0.55Fe0.45에서 2.5 atm을 나타내었고, 최대값은 TiCo0.90Fe0.10에서 10 atm을 나타내었다. TiCoxFe1-x(x=0.50~.00)-SS 복합막 에 의하여 120°C에서 H2-N2 혼합기체를 분리하는 경우, 가장 우수한 복합막은 고압부의 수소투과압력이 2.5 atm으로 가장 낮 고, hysteresis가 가장 작은 TiCo0.55Fe0.45-SS 복합막이었다.