摘要
用ＮＨ４Ｃｌ和Ｈ２ＳＯ４为浸取剂，络合浸取废甲醇催化剂中的ＺｎＯ和ＣｕＯ，以制备活性ＺｎＯ和ＣｕＳＯ４５Ｈ２Ｏ。浸取ＺｎＯ的适宜条件为：温度８５～１００℃，ＮＨ４Ｃｌ投加量为理论量的１．９～２．１倍，浸取时间为２０ｍｉｎ。浸取ＣｕＯ的适宜条件为：Ｈ２ＳＯ４浓度为２～３ｍｏｌ／Ｌ，分两次加入，其加入量以恰好与ＣｕＯ反应完全为宜。
ZnO and CuO are recovered from spent methanol catalyst by a complex leaching process with NH 4Cl and H 2SO 4 as leaching agents to prepare activated ZnO and CuSO 4·5H 2O.The leaching conditions for ZnO are as follows:85～100℃,the dose of NH 4Cl being 1.9～2.1 times as much as its theoretical dose,20min of leaching time;and those for CuO:the dose of H 2SO 4 with concentration of 2～3mol/L,added trice,is just sufficient to completely react with CuO.
出处
《化工环保》
CAS
CSCD
北大核心
1997年第5期291-294,共4页
Environmental Protection of Chemical Industry
关键词
废甲醇催化剂
络合浸取
氯化铵
spent methanol catalyst,complex leaching,ammonium chlorine.
