积分球紫外分光光度计法测量MTO催化剂碳含量

Measurement of carbon content in MTO catalysts by integrating sphere ultraviolet spectrophotometer method

为快速、准确测量MTO催化剂碳含量,通过研究不同碳含量的再生催化剂和待生催化剂的积分球紫外漫反射光谱,得到催化剂的碳含量与其紫外漫反射的反射比(碳含量-反射比)成线性关系,并确定不同催化剂碳含量-反射比的标准曲线。通过反射比法测得的催化剂碳含量与高频感应红外吸收法测得的结果相比误差小于3%。反射比法分析速度快,适于工业化含碳催化剂的碳含量测量。

In order to measure carbon content rapidly and accurately,the integrating sphere ultraviolet diffuse reflection spectra of regenerated catalysts and spent catalysts which had different carbon contents were studied. The results showed that,the catalyst carbon content and its ultraviolet diffuse reflectance had a linear relationship. The standard curve of carbon content-reflectance was determined by the study.To measure catalyst carbon content,compared to the results of high frequency induction infrared absorption method,the measurement results using reflectance method had a deviation of less than 3%. The reflectance method had a high analysis speed,and it was suitable for industrialized catalyst carbon content analysis.