A distorted 4 - coordinated Al species is identified on the SAPO - 34 sample after MTH reaction.

在SAPO一 34分 子筛上反应诱导了畸变四配位Al的生成.

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Electron probe microanalysis ( EPMA ) shows that silicon is only substituted for phosphorus.

电子探针分析结果表明,硅只取代磷进入SAPO -5分 子筛骨架.

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