(上海大學(xué) 上海市鋼鐵冶金重點實驗室， 上海 200072)
摘 要: 把分子態(tài)的氫轉(zhuǎn)變?yōu)榈入x子態(tài)的氫可以從熱力學(xué)和動力學(xué)層面上提高氫還原金屬氧化物的能力。中等氣壓下（102~104 Pa）非平衡態(tài)氫等離子體中存在的主要活潑粒子包括H、 H+、 H2+和H3+，其中原子氫的濃度最大， 是比較穩(wěn)定且具有重要化學(xué)反應(yīng)活性的粒子。 根據(jù)熱力學(xué)計算， 這些粒子的還原能力大小為： H+>H2+>H3+ >H。 通過CuO在直流脈沖輝光氫等離子體中的還原實驗證實了等離子態(tài)的氫能強化氫還原金屬氧化物的能力。
關(guān)鍵字: 氫； 等離子體; 還原; 金屬氧化物
（ Shanghai Enhanced Ferrometallurgy Laboratory,
Shanghai University， Shanghai 200072, China）
Abstract: Transforming molecular hydrogen to plasma hydrogen can enhance the reduction ability of hydrogen in the terms of thermodynamics and kinetics. In nonequilibrium hydrogen palsma at moderate pressure(102-104 Pa), the main chemically active species are H, H+, H2+ and H3+. The monatomic hydrogen has important chemical value for its greatest concentration and stability. The order of the reduction ability for these species is H+>H2+>H3+ >H. The experimental results for the reduction of CuO with nonequilibrium hydrogen plasma produced by a DC pulsed glow discharge indicate that plasma hydrogen offers improved reduction ability.
Key words: hydrogen; plasma; reduction; metal oxide
