火焰原子吸收光谱法测定氢化丁腈橡胶催化剂脱除液中铑  

Determination of Rh in Removal Solution of the Catalyst from HNBR by FAAS

作　　者：姚明[1] 赵伟栋[2] 王书俊[1] 徐瑞清[1] 

机构地区：[1]北京化工大学可控化学反应科学与技术基础教育部重点实验室,北京100029 [2]航天部航天材料及工艺研究院,北京100076

出　　处：《光谱学与光谱分析》2003年第2期377-379,共3页Spectroscopy and Spectral Analysis

摘　　要：本文采用火焰原子吸收方法分析水相中铑的含量,精确度高,准确性好。并借助此方法研究络合-萃取法脱除氢化丁腈橡胶中催化剂的较佳工艺条件。以硫脲为络合剂,用量为催化剂15倍(mol比),88％的甲酸为萃取剂,用量为胶液体积的一半,脱除反应温度110℃,反应时间2h时,Rh的脱除率达98％以上。The content of Rhodium in extraction solution of the catalyst from HNBR was determined by FAAS. The results showed that this method was simple, rapid, accurate and convenient. Furthermore, this method was used as a means to investigate the optimum process conditions for removing catalyst from HNBR by ligation-extraction technology. When sulfocarbmide was used as a ligation agent and 88 % formic acid as an extraction agent, the removal rate of Rh was greater than 98 % under the condition of 100degreesC and two hours of reaction time.

关 键 词：火焰原子吸收光谱法 测定 氢化丁腈橡胶 催化剂脱除液 铑 

分 类 号：TQ333.7[化学工程—橡胶工业]