Abstract Zn-modified SAPO-34 zeolites with different SAPO-34 intermediates were prepared by an impregnation method, and their catalytic performance in MTO reaction was systematically studied. The physicochemical properties of all samples were characterized by XRD, SEM, N 2 adsorption-desorption, NH 3 -TPD, FTIR, and XRF. The results show that the template, here TEA, has a protective effect on Templated-SAPO-34 structure during aqueous Zn modification process, which affects the structural integrity of Zn/Temp.-SAPO-34 zeolite and thus determines its product distribution. The prepared Zn/Temp.-SAPO-34 zeolite is a highly selective catalyst for ethene production from methanol, with the highest reported ethene to propene ratio of 2.00. Graphic Abstract

中文翻译：

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TEA对水相Zn改性过程中模板化SAPO-34结构的保护作用

摘要 采用浸渍法制备了不同SAPO-34中间体的Zn改性SAPO-34沸石，并系统研究了其在MTO反应中的催化性能。所有样品的理化性质通过XRD、SEM、N 2 吸附-解吸、NH 3 -TPD、FTIR和XRF表征。结果表明，模板，这里是 TEA，在水相 Zn 改性过程中对 Templated-SAPO-34 结构具有保护作用，影响 Zn/Temp.-SAPO-34 沸石的结构完整性，从而决定其产物分布。制备的 Zn/Temp.-SAPO-34 沸石是一种从甲醇生产乙烯的高选择性催化剂，据报道最高的乙烯丙烯比为 2.00。图形摘要