The IR spectrum rcsearch shows, there were no hydroxyl groups and no B acid sites on the AIPO4-5. But there were two hydroxyl groups at 3666cm-1 and 3620 cm-1on the SnAPO_5, B acid sites were present.
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- 从TPR谱所得结果表明；Sn已进入骨架且不易被还原成零价的Sn.；AlPO_(4-5)的IR谱上无羟基峰出现；其表明没有B酸位存在；而SnAPO_(-5)出现了3666cm~(-1)和3620cm~(-1)二个羟基峰；表明有B酸位存在
