Pd 코팅 된 중공사형 La0.1Sr0.9Co0.2Fe0.8O3-δ 촉매의 제조 및 미량 산소 제거 특성 연구

정병준; 이홍주; 김민광; 이승환; 박정훈; Byeong Jun Jeong; Hong Ju Lee; Min Kwang Kim; Seung Hwan Lee; Jung Hoon Park

Korean Chemical Engineering Research, Vol.57, No.6, 774-780, December, 2019

DOI10.9713/kcer.2019.57.6.774 Export Citation

Pd 코팅 된 중공사형 La0.1Sr0.9Co0.2Fe0.8O3-δ 촉매의 제조 및 미량 산소 제거 특성 연구

Preparation of Pd Coated Hollow Fiber-Type La0.1Sr0.9Co0.2Fe0.8O3-δ Catalyst and Study on Removal Characteristics of Minute Oxygen

정병준, 이홍주¹, 김민광¹, 이승환¹, 박정훈^{1, †}

동국대학교 신소재화학과, 38066 경주시 동대로 123
¹동국대학교 화공생물공학과, 04620 서울특별시 중구 필동로 1길 30

Byeong Jun Jeong, Hong Ju Lee¹, Min Kwang Kim¹, Seung Hwan Lee¹, and Jung Hoon Park^{1, †}

Department of Advanced Materials Chemistry, Dongguk University, 123, Dongdae-ro, Gyeongju, 38066, Korea
¹Department of Chemical and Biochemical Engineering, Dongguk University, 30, Pildong-ro 1gil, Jung-gu, Seoul, 04620, Korea

E-mail:

초록

본 연구에서는 저온에서 매립지 가스(LFG)하에서 메탄의 완전 산화 특성 분석을 위한 고성능 Pd 코팅 La0.1Sr0.9Co0.2Fe0.8O3-δ (LSCF-1928)촉매를 개발하였다. LSCF-1928 촉매를 분말형과 중공사형으로 성형한 후 중공사형의 표면을 무전해도금법으로 Pd를 코팅하였다. 성형된 촉매는 TPR을 통해 촉매에 흡착 된 산소종과 그 흡착 량을 분석하였고, SEM을 통해 중공사형 기공구조를 확인하였으며, XRD를 통해 촉매의 안정성을 확인하였다. 메탄 산화 실험 결과 LSCF-1928 촉매의 메탄 완전산화 온도는 475 °C 이었으나, Pd코팅 된 LSCF-1928 촉매는 이보다 낮았으며, O2 전화 율 또한 일반 LSCF-1928 촉매보다 Pd 코팅 LSCF-1928 촉매가 높았음을 확인하였다.

An efficient Pd-coated La0.1Sr0.9Co0.2Fe0.8O3-δ (LSCF-1928) catalyst for total oxidation of methane under landfill gas at low tmeperature has been developed. Synergism was observed between Pd coating and LSCF-1928 substrate. When Pd coating on LSCF-1928, we used electroless plating method and conformed characteristic of catalyst through TPR(Temperature Programmed Reduction) analysis, XRD(X-ray Diffraction) analysis, SEM(Scanning Electron Microscope). The results demonstrated that the Pd coated LSCF-1928 catalysts showed higher performance than non-Pd LSCF-1928. Pd coated LSCF-1928 had low total oxidation temperature of methane (< 475 °C) which is lower than total oxidation temperature of methane about non-Pd LSCF-1928 catalysts (= 475 °C). Also, O2 conversion rate was higher than non-Pd LSCF-1928 at same temperature.

Keywords:Perovskite;Hollow fiber catalyst;Total oxidation;Oxygen removal;Biogas

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