Physical blending of SAPO-34 with ZnO increases the ratio of ethene to propene, and the efficacy of ZnO on increasing ethene to propene ratio increases with increasing proximity between SAPO-34 domains and ZnO surfaces, which exemplifies a facile method of adjusting product distribution by coupling of different catalyst functions. Based on the characterization and reaction results, the effect of ZnO on methanol conversion over SAPO-34 zeolite is interpreted as opening up a parallel reaction pathway involving the reactive intermediate, formaldehyde, and the proximity effect manifests the critical transportation of formaldehyde between SAPO-34 domains and ZnO surfaces on product selectivity.

SAPO-34与ZnO的物理共混会增加乙烯与丙烯的比例，并且随着SAPO-34结构域与ZnO表面之间的接近度增加，ZnO在提高乙烯与丙烯比例方面的功效也会提高，这证明了一种简便的方法可通过不同催化剂功能的耦合。根据表征和反应结果，ZnO对SAPO-34沸石上甲醇转化的影响被解释为打开了涉及反应性中间体甲醛的平行反应路径，并且邻近效应表明SAPO-34之间甲醛的关键运输区域和ZnO表面对产物的选择性。