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알칼리형 연료전지의 수소극 Raney Ni 촉매에 관한 연구
The Study on Raney Ni Used as the Catalyst of Hydrogen Electrode in Alkaline Fuel Cell
HWAHAK KONGHAK, June 1992, 30(3), 328-338(11), NONE
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Abstract
평균 입자 크기와 겉보기 밀도가 작은 Ni 촉매가 우수한 촉매능을 보여주었으며, 이 Ni로 제조된 Raney Ni이 역시 뛰어난 촉매능을 나타내었다. Raney Ni의 제조온도로는 750℃가 적당하였다. CO화학흡착과 벤젠의 수소화 반응에서는 Ni과 Raney Ni의 최적 PTFE 혼합량은 각각 10wt%, 5wt%였으나, 전극방응 실험에서 Raney Ni의 경우는 10wt%이었다. Raney Ni의 촉매능은 수소 활성화처리에 의해 상당한 영향을 받았다.
Ni with a small average particle size and apparent density showed a good catalytic activity, and Raney Ni prepared from these Ni powders also exhibited an excellent catalytic activity. It was found that the best preparation temperature of Raney Ni catalyst was about 750℃. For the chemisorption of CO and the hydrogenation of benzene, the optimal weight ratio of PTFE-binder to Ni and Raney Ni was 10wt% and 5wt%, respectively. For electrode reaction experiments, however, 10wt% PTFE-bonded Raney Ni hydro-gen electrode showed the best electrode performance. The catalytic activity of Raney Ni was considerably affected by the treatment of H2 activation.
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Winsel A, Chem. Ing. Tech., 43, 191 (1971)
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Tracey VA, Powder Metallurgy, 2, 45 (1979)
