作者: Fumitaka Hayashi , Masaaki Kitano , Toshiharu Yokoyama , Michikazu Hara , Hideo Hosono
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摘要: The inorganic electride [Ca24Al28O64]4+(e−)4 (C12A7:e−) has unique properties, that is, chemical stability and a low work function comparable to of metal K. However, its surface area is (≈1 m2 g−1) because sintering occurs during high-temperature annealing, which needed remove CaO layers formed by reaction with Ca works as reductant. We report simple synthesis method for moderate-surface-area C12A7:e− (9–19 m2 g−1) using rapid thermal annealing (RTA) technique. consists 1) high-temperature evacuation, 2) reaction metal, 3) RTA. influence these conditions was first studied achieve both high electron concentration. Next, samples were examined Ru catalyst supports NH3 synthesis. activity Ru-loaded as-prepared moderate but increased fivefold RTA processing prior loading result structure reconstruction. improvement in the dispersion degree results from trebled overall (3550 μmol NH 3 gcat−1 h−1 at 340 °C) compared conventional Ru/C12A7:e−.