摘要
研究了有硫氰酸盐存在下用ＭＩＢＫ（甲基异丁基酮）萃取Ｐｄ（Ⅱ）；在０．５～４．０ｍｏｌ／ＬＨＣｌ介质中，有１０００倍ＳＣＮ￣－存在下，Ｐｄ（Ⅱ）被定量萃取，有机相：水相可达１：５．萃取容量达１．２ｇ／Ｌ，通过对各级配合物分布的计算，表明此时Ｐｄ（Ⅱ）以Ｐｄ（ＳＣＮ）＿４形式存在，初步认为是Ｐｄ（ｓｃＮ）＿４与质子化的Ｍ１８Ｋ形成盐而被萃取。
The extraction of Pd(Ⅱ)-thiocyanate complex with MIBK(methyl-isobutyl-ketone)was investigated.reacts with thiocyanate and forms anionic complexwhich could be extracted by MIBK in a wide range of HCI medium (0.5～4mol/L).Based on the stability constants of various complexes and the concentration of Pd(Ⅱ)and thiocyanate,the distrisbution of various forms of Pd(Ⅱ)-thiocyanate-chloride com-plex has been calculated and the extraction mechanism is proposed as an ion associationsystem.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
1994年第2期91-96,共6页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
国家自然科学基金资助项目
关键词
萃取
铂系金属
硫氰酸
络合物
extraction,platinum series metal complexes
