HHGJW0021 微量1,2-二氯乙烷在乙烯环氧化中的作用测定填充柱

微量1,2-二氯乙烷在乙烯环氧化中的作用测定填充柱，液化石油气，二甲醚，甲缩醛，乙缩醛，乙醇，室内空气，焦炉煤气，炼厂气，天然气，变压器油，多氯联苯，植物油，增塑剂，塑化剂，消毒剂

微量1,2-二氯乙烷在乙烯环氧化中的作用测定填充柱
微量1,2-二氯乙烷在乙烯环氧化中的作用测定填充柱 详细信息：

在乙烯环氧化的原料气中添加微量的1,2-二氯乙烷能较大地提高乙烯环氧化的选择性。1,2-二氯乙烷在反应条件下能分解出氯,并以强、弱两种吸附态存在于催化剂的表面上。它们一方面抑制催化剂表面起深度氧化作用的氧原子的吸附强度和浓度,一方面又排斥反应生成的环氧乙烷,使它更快地脱附,从而减少环氧乙烷异构化的机会,提高乙烯环氧化的选择性。同时吸附在催化剂表面上的氯又与乙烯反应生成1,2-二氯乙烷。这样有机氯化物在催化剂表面上的分解消耗和反应生成达成平衡,以维持催化反应的持续进行。


浩瀚色谱（山东）应用技术开发有限公司采用专用填充柱,在原料气分析方法的基础上建立了一套工业尾气中的微量1,2-二氯乙烷(EDC)的分析方法.

名称：不锈钢填充柱

型号：HHGJW0021

规格：3m*3mm，60-80目

高温度：240°C

编号：20230404001

微量1,2-二氯乙烷在乙烯环氧化中的作用测定填充柱 测试谱图：



Details of the application of Agilent 8860 to chromatographic columns filled with glass balls: The Agilent 8860 test spectrum for the application of a chromatographic column filled with glass balls:Determination of the role of trace amounts of 1,2-dichloroethane in ethylene epoxidation using packed columns

Detailed information on the role of trace amounts of 1,2-dichloroethane in ethylene epoxidation using packed columns:



Adding trace amounts of 1,2-dichloroethane to the feed gas for ethylene epoxidation can greatly improve the selectivity of ethylene epoxidation. 1,2-dichloroethane can decompose into chlorine under reaction conditions and exist on the surface of the catalyst in both strong and weak adsorption states. On the one hand, they inhibit the adsorption strength and concentration of oxygen atoms on the catalyst surface that play a deep oxidation role, and on the other hand, they repel the reaction generated ethylene oxide, making it desorb faster, thereby reducing the opportunity for ethylene oxide isomerization and improving the selectivity of ethylene epoxidation. The chlorine adsorbed on the catalyst surface reacts with ethylene to produce 1,2-dichloroethane. In this way, the decomposition consumption and reaction generation of organic chlorides on the catalyst surface are balanced to maintain the continuous progress of the catalytic reaction.




Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a set of analytical methods for trace amounts of 1,2-dichloroethane (EDC) in industrial exhaust gas using specialized packed columns based on the analysis method of raw gas





Name: Stainless steel filled column



Model: HHGJW0021



Specification: 3m * 3mm, 60-80 mesh



Maximum temperature: 240 ° C



No.: 20230404001






The role of trace amounts of 1,2-dichloroethane in ethylene epoxidation was determined using a packed column test spectrogram: