硅钼蓝光度法快速测定SAPO-34分子筛中硅含量  

SAPO-34 molecular sieve silicon content of silicon molybdenum blue spectrophotometric determination

作　　者：裴婷 李大鹏 高瑞民 王明峰 张书勤 陈刚 张菊 卢永斌 张伟 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]陕西延长石油(集团)有限责任公司碳氢高效利用技术研究中心,陕西西安710075

出　　处：《应用化工》2015年第10期1955-1959,共5页Applied Chemical Industry

基　　金：陕西延长石油(集团)有限责任公司<308科研攻关项目研究>(ycsy2013ky-A-15)

摘　　要：建立一种以分光光度法测定SAPO-34分子筛中硅含量的分析方法。以硅和钼酸铵在盐酸介质中形成硅钼黄杂多酸,再以抗坏血酸将硅钼黄还原成硅钼蓝后,对硅含量进行测定。结果表明,体系中硅钼蓝的最大吸收波长为806 nm,绘制的标准曲线在0.100 0～6.000 mg/L内服从朗伯-比尔定律,所得相关系数为R^2=0.999 5。该分析方法用于SAPO-34分子筛中硅含量的测定,精密度及稳定性良好,操作简单、快速。To establish a spectrophotometric method determination of SAPO-34 silicon content in molecular sieve analysis method. With silicon and ammonium molybdate formed in hydrochloric acid medium silicon molybdenum yellow heteropoly acid,using silicon with ascorbic acid molybdenum yellow after reduction of silicon molybdenum blue,for determination of silica content. The results show that the maximum absorption wavelength of silicon molybdenum blue is 806 nm,draw the standard curve of within 0. 100 0～ 6. 000 mg / L to lambert beer＇s law,the correlation coefficient R^2= 0. 999 5. The analysis method is used for SAPO-34 on the determination of silicon content in molecular sieve,precision and good stability,simple operation,fast.

关 键 词：硅 硅钼蓝 SAPO-34分子筛 分光光度法 

分 类 号：TQ016.51[化学工程]