苯是重要的有机化工原料,制苯工业在化学工业中占有重要地位。采用裂解汽油加氢,脱烷基制苯是重要的途径之一。在此工艺过程中,要使用脱烷基制苯催化剂以提高苯的产率。在制备和使用这种催化剂时,常需要测定其中活性组分三氧化二铬(Cr_2O_3)与氧化钠(Na_2O)的含量,本文提供了上述组分的原子吸收光谱分析法。 (一)仪器和试剂 Benzene is an important organic chemical raw materials, benzene industry in the chemical industry holds an important position. Using pyrolysis gasoline hydrogenation, dealkylation of benzene is one of the important ways. In this process, the use of dealkylation of benzene catalyst to improve benzene yield. In the preparation and use of this catalyst, it is often necessary to determine the active ingredient of chromium oxide (Cr 2 O 3) and sodium oxide (Na 2 O). The above-mentioned components are provided by atomic absorption spectrometry. (A) instruments and reagents