利用色谱分离技术及碳平衡原理构建了准确可靠的乙醇脱水制乙烯的分析方法,并对HZSM-5分子筛催化剂的活性进行了评估。结果表明,在乙醇质量浓度为50%,质量空速为2.0/h,温度为280℃的反应条件下,催化剂的活性比较理想,乙醇的转化率和乙烯的选择性分别达到99.60%和98.10%。进一步升高反应温度,乙烯的选择性明显下降。 The chromatographic separation technique and carbon equilibrium principle were used to establish an accurate and reliable analytical method for the dehydration of ethanol to ethylene. The catalytic activity of HZSM-5 zeolite catalyst was also evaluated. The results showed that under the reaction conditions of ethanol concentration of 50%, mass space velocity of 2.0 / h and temperature of 280 ℃, the activity of the catalyst was satisfactory, the conversion of ethanol and the selectivity of ethylene reached 99.60% and 98.10% respectively. . When the reaction temperature is further increased, the selectivity of ethylene is obviously decreased.