论文部分内容阅读
钼体系催化剂是一类重要的催化剂。催化剂中钼的含量对催化剂的活性起着重要作用,快速准确地测定其中钼的含量对于催化剂的研究是很必要的。硫氢酸盐光度法是测定钼常用的方法,具有操作简便、结果准确之优点。由于该催化剂只能在氮气保护下溶于汽油,遇到空气和水时钼即析出,故不能直接用文献[1]介绍的方法测定钼体系催化剂中钼。本文对汽油在无水乙醇中的溶解情况进行试验,表明催化剂的汽油溶液能溶于无水乙醇,而且稳定,从而解决了试样的稀释、分取和储存等问题。本法将钼的硫氰酸盐光度法应用到钼体系催化剂中钼的测定,得到了满意的结果。仪器与试剂 72型分光光度计;50％硫氰酸钾溶
Molybdenum system catalyst is an important class of catalysts. The molybdenum content in the catalyst plays an important role in the activity of the catalyst. It is necessary to determine the molybdenum content quickly and accurately for the catalyst research. Sulfate spectrophotometry is a commonly used method for the determination of molybdenum, with the advantages of simple operation and accurate results. As the catalyst can only be dissolved in gasoline under the protection of nitrogen, molybdenum is precipitated when it encounters air and water, so molybdenum can not be directly determined by the method described in the literature [1]. In this paper, the gasoline dissolved in ethanol was tested, indicating that the catalyst gasoline solution can be dissolved in ethanol, and stable, thus solving the sample dilution, separation and storage and other issues. The law of the molybdenum thiocyanate spectrophotometric determination of molybdenum molybdenum catalyst, obtained satisfactory results. Instruments and reagents 72 spectrophotometer; 50% potassium thiocyanate dissolved