紀要論文 α-Al2O3担持Ptナノ粒子触媒のCO酸化活性と着火現象
Ignition-extinction phenomena in CO oxidation reaction over “dry” impregnated platinum nanoparticles on α-Al2O3

田口, 明  ,  尾崎, 智弘

36pp.45 - 52 , 2017-09-15 , 富山大学研究推進機構水素同位体科学研究センター
ISSN:13463675
NII書誌ID(NCID):AA11841872
内容記述
To understand the hydrogen absorption and desorption behaviors of Pd under air, we performed real time measurements of the electrical resistance of Pd under gas mixture with various oxygen contents. The hydrogen absorption rate was independent of oxygen concentration. Conversely, the hydrogen desorption rate in the presence of oxygen was faster than that without oxygen, suggesting that the additional desorption path including water formation reaction appears in the hydrogen desorption process in the presence of oxygen. The hydrogen concentration in Pd at equilibrium decreased with increasing oxygen concentration in gas phase because the hydrogen adsorption sites become partially occupied by oxygen atoms.
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