正戊烷与甲醇制芳烃工艺条件的优化

以负载ZnO的ZSM-5为催化剂,利用固定床微型反应装置系统地考察了反应温度、反应空速、投料摩尔比对甲醇与正戊烷共芳构化反应的影响.结果表明:与单独芳构化相比,正戊烷与甲醇共芳构化可提高芳烃的选择性,抑制干气的生成;随着甲醇与正戊烷摩尔比的增大,正戊烷的转化率下降;正戊烷与甲醇在ZSM-5分子筛上进行芳构化反应的适宜反...

OPTIMIZATION OF PROCESS CONDITIONS FOR PENTANE AND METHANOL CO-AROMATIZATION

The effects of the reaction temperature, hydrocarbon base mass space velocity, and the feed molar ratio of methanol to n-pentane on the co-aromatization performance were systematically investigated in a fixed bed micro-reactor with ZSM-5 molecular sieve modified by ZnO as the catalyst. The results showed that the co-aromatization of n-pentane and methanol significantly improved the selectivity of aromatics and inhibited the formation of dry gas, the conversion rate of n-pentane decreased with the increase of the molar ratio of methanol to n-pentane. The optimum reaction conditions for the co-aromatization of n-pentane and methanol on ZSM-5 molecular sieve covered a temperature of 475 ℃, a hydrocarbon base mass space velocity of 2 h^-1, and a molar ratio of methanol to n-pentane of 3:1. The selectivity of aromatics in the co-aromatization of n-pentane with methanol was 31.68% at the optimum reaction conditions.