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本文报道了Cr(Ⅵ)-C_(12)H_8N_2-NaNO_2-NH_3-NH_4Cl(pH9.4)体系极谱催化波机制的研究.阐明它不是氢催化波.而是Cr(Ⅲ)的多元配合物中NO_2~-被催化还原,同时溶液中的NO_2~-又参与了平行电极反应的催化反应.活性多元配合物的组成为:Cr(Ⅲ)·(C_(12)H_8N_2)·(NO_2~-)_2·(NH_3).
This paper reports the polarographic catalytic wave mechanism of the Cr (Ⅵ) -C_ (12) H_8N_2-NaNO_2-NH_3-NH_4Cl (pH9.4) system and shows that it is not a hydrogen catalytic wave but a multicomponent complex of Cr The catalytic activity of NO_ (2 -) catalyzed reduction of NO_ (2 -) in solution and the catalytic action of NO_ (2 ~) in solution on the parallel electrode reaction were also studied.The composition of the active multivalent complex was Cr (Ⅲ) · (C 12 H 8 N 2) ) _2 (NH_3).