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·1998· 精细化工 FINE CHEMICALS 第 35 卷

为 0.00202%、0.00241%和 0.00213%。 （2）在 APTES 浓度 46 g/L 和水热晶化次数为
由图 7 可见，该 13X 分子筛膜对二甲醚、甲醇、 2 次时，所制备得到的 13X 分子筛膜最佳，其膜层
丙醛 3 种杂质均具备较好的脱除性能，对二甲醚、 厚度达到了 10~15 μm，均匀分布的分子筛粒径为
甲醇、丙醛的穿透时间分别为 25.2、102 和 178 h， 1~1.5 μm。
对二甲醚、甲醇、丙醛 3 种杂质的吸附量分别达到 （3）含二甲醚、甲醇、丙醛 3 种杂质的氮气和
37.166、125.012 和 345.585 mg/g。此外，并没有观 乙烯原料气净化实验表明，该 13X 分子筛膜比颗粒
察到明显的乙烯共吸附现象。 状 13X 分子筛吸附剂具备更佳的深度净化性能。乙

烯体系中，13X 分子筛膜对二甲醚、甲醇、丙醛的
穿透时间分别长达 25.2、102 和 178 h，吸附量分别
达到 37.166、125.012、345.585 mg/g。结果表明，
13X 分子筛膜作为替代颗粒状 13X 分子筛吸附剂在
深度净化气态轻质烯烃中含氧化物领域有着巨大的
应用前景。

参考文献：
[1] ZhangYong (张勇). Progress in olefin technology (烯烃技术进展)
[M]. Beijing: China Petrochemical Press (中国石化出版社), 2008:
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图 7 乙烯体系中 13X 分子筛膜对二甲醚、甲醇、丙醛杂 [2] Losch P, Pinar A B, Willinger M G, et al. H-ZSM-5 zeolite model
crystals: Structure-diffusion-activity relationship in methanol-to-
质吸附穿透曲线 olefins catalysis [J]. Journal of Catalysis, 2017, 345: 11-23.
Fig. 7 Dimethyl ether, methanol and propanal adsorption [3] Yu B Y, Chien I L. Design and optimization of the methanol-to-olefin
penetration curves in a C 2 H 4 system by 13X process. part II: comparison of different methods for propylene/
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由图 8 分析可知，5 次使用后，该 13X 分子筛 [5] Yang Chunyu (杨春育), Huang Jianping (晃建平), Huang Hairong
( 黄海蓉 ). Adsorption on zeilite of methanol from liquid C 4
膜仍旧能将初始摩尔分数为 0.002%的二甲醚杂质 hydrocarbon [J]. Petrochemical Technology (石油化工), 2001, 30(9):
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