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提出了尿素醇解合成碳酸二甲酯体系中1-甲基-3-丁基咪唑氯化锌离子液体催化剂的含量分析方法。采用紫外光谱法测定了离子液体催化剂的最大吸收波长,并建立了标准工作曲线,其线性相关系数为0.9986,方法的相对标准偏差RSD为2.5%,回收率为98.7%～102.4%。
A method for the content analysis of 1-methyl-3-butylimidazolium chloride zinc ionic liquid catalyst in the alcoholysis of urea to dimethyl carbonate was proposed. The maximum absorption wavelength of ionic liquid catalyst was determined by UV spectrophotometry. The standard operating curve was established. The linear correlation coefficient was 0.9986. The relative standard deviation (RSD) was 2.5% and the recovery was 98.7% ~ 102.4%.