河南科学
河南科學
하남과학
HENAN SCIENCE
2013年
1期
43-45
,共3页
有机膦%镍催化剂%EDTA
有機膦%鎳催化劑%EDTA
유궤련%얼최화제%EDTA
organophosphorus%nickel catalysts%EDTA
用干法灰化法对有机膦配位镍催化剂进行前处理,盐酸溶解残渣,紫脲酸铵作为指示剂,采用EDTA络合滴定法测定其中的镍含量.探讨了前处理方法、溶解残渣的酸的选择以及指示剂的选择对测定结果的影响.结果表明,该方法用于测定含镍量较高的有机膦配位镍类催化剂具有准确度高、精密度好、方法简便、易于操作的特点.
用榦法灰化法對有機膦配位鎳催化劑進行前處理,鹽痠溶解殘渣,紫脲痠銨作為指示劑,採用EDTA絡閤滴定法測定其中的鎳含量.探討瞭前處理方法、溶解殘渣的痠的選擇以及指示劑的選擇對測定結果的影響.結果錶明,該方法用于測定含鎳量較高的有機膦配位鎳類催化劑具有準確度高、精密度好、方法簡便、易于操作的特點.
용간법회화법대유궤련배위얼최화제진행전처리,염산용해잔사,자뇨산안작위지시제,채용EDTA락합적정법측정기중적얼함량.탐토료전처리방법、용해잔사적산적선택이급지시제적선택대측정결과적영향.결과표명,해방법용우측정함얼량교고적유궤련배위얼류최화제구유준학도고、정밀도호、방법간편、역우조작적특점.
@@@@The nickel content of nickel catalysts coordinated with organophosphorus was determined by EDTA complexometric method. The pretreatment was implemented by dry cineration,the residue was dissolved with hydrochloric acid,and murexide was used indicator in the method. The influences of pretreatment methods,the acid choice of dissolution of residue and the choice of indicator were discussed. Results showed that the method was simple to operate,and had advantages of high accuracy and precision for measuring high nickel of nickel catalysts coordinated with organophosphorus.
