杨昆;张铁珍;马文慧;侯凯湖;

• 1:河北工业大学化工学院

• 2:中国石油石油化工研究院大庆化工研究中心

摘要(Abstract)：

以ZSM-5为硅源,采用水热法制备ZSM-5-MCM-41介微孔复合分子筛,并分别采用浸渍法和离子交换法对它进行磷酸(P)改性;根据XRD、NH3-TPD和Py-IR等分析技术,对改性ZSM-5-MCM-41进行表征和催化乙醇脱水性能评价.结果表明:磷酸(P)改性未影响ZSM-5-MCM-41的晶相性质,但使其L酸量显著增加、B酸量减少;与未改性的ZSM-5-MCM-41相比,磷酸(P)离子交换法改性ZSM-5-MCM-41的催化乙醇脱水活性和稳定性得到明显改善;在常压、温度为295℃、液时空速(LHSV)为2h-1的条件下,在P改性ZSM-5-MCM-41催化剂上乙醇的转化率和乙烯选择性大于98%,连续反应100h催化剂的活性未下降.P改性ZSM-5-MCM-41可作为工业规模乙醇脱水过程的催化剂.

关键词(KeyWords)：ZSM-5-MCM-41;复合分子筛;离子交换法;乙烯;乙醇脱水

Abstract:

Keywords:

基金项目(Foundation):

作者(Author):杨昆;张铁珍;马文慧;侯凯湖;

Email:

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