骨架呈负电性，具有可交换的阳离子，被广泛用作吸附剂、催化剂和催化剂载体，是一种具有优异择形选择性、热稳定性和湿热稳定性的新型催化材料。

SAPO is a novel class of catalytic materials which exhibit excellent shape selectivity, thermal stability and hydrothermal stability, which can catalyze hydrocarbon reactions.

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研究表明，离子交换蒙脱石中吸附水的存在状态和数量明显地依赖于其可交换金属阳离子的水合能力和交换数目。

The results show that the amount and state of the adsorbed water are obviously correlated with the hydration power of the metal ions and the amount of exchanged metal ions.

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根据宣城沸石化学成分、可交换阳离子组成和热处理晶体结构演化，判断宣城沸石为富钙斜发沸石，具有低热稳定性的特点。

According to chemical composition, exchangeable cation and thermal behaviors of crystal structure, Xuancheng zeolite should belong to calcium-rich clinoptilolite with low thermal stability.

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