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TiO2 첨가에 의한 팔라듐 촉매의 열적 안정성 향상 연구
Improvement of Thermal Stability of Pd Catalyst upon Incorporation of TiO2
HWAHAK KONGHAK, October 1999, 37(5), 634-638(5), NONE
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Abstract
팔라듐 촉매의 열적 안정성을 향상시키기 위하여 란타니움 알루미나에 2 wt% 팔라듐을 담지한 후, 10 mole% 티타니아를 첨가하여 TiO2/Pd/La-Al2O3촉매를 제조하였다. 제조된 촉매는 X선 회절법, 열중량 분석법, 승온 탈착법과 X선 흡광 미세구조분석법으로 분석하였으며 또한 메탄연소 반응성도 측정하였다. TiO2가 첨가되더라도 팔라듐 촉매의 메탄연소 반응성은 변하지 않았으며 1,473K로 고온에서 열처리하더라도 촉매활성 성분으로 알려진 PdO이 안정하게 존재하였다. TiO2와 팔라듐 촉매간의 상호작용에 의해 촉매의 열적 안정성이 향상되었다고 생각되었다.
Improvement of thermal stability of the surpported Pd catalyst has been achieved with the incorporation of TiO2 onto the catalyst. The catalyst was characterizes with X-ray diffraction, thermo-gravimetric analysis, temperature programmed desorption and X ray absorption fine structure. The activity of methane combustion of the presence of TiO2. The interaction between the Pd catalyst and TiO2 at 1,473K suppressed the transformation of PdO into Pd, thereby improving the thermal stability of palladium catalyst.
Keywords
References
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