| 水热处理对超稳Y沸石分子筛热稳定性的影响 |
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| 引用本文： | 匡跃平 何农跃. 水热处理对超稳Y沸石分子筛热稳定性的影响[J]. 湘潭大学自然科学学报, 1993, 15(2): 70-74 |
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| 作者姓名： | 匡跃平 何农跃 |
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| 作者单位： | 湘潭广播电观大学，湘潭大学中心实验室，汕头大学化学系，中国石油天然气总公司炼化局，长岭炼油化工厂 岳阳 |
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| 摘 要： | 本文对Y沸石及超稳Y沸石的热稳定性进行了探讨,结果表明,各种超稳Y沸石的热稳定性都比Y沸石高;水热处理前各种超稳Y沸石热稳定性彼此相差较大,但经水热处理后差距变小并且晶格破坏温度都有所降低,非骨架铝可能是造成这种热稳定性变差的原因。
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| 关 键 词： | 超稳Y沸石 热稳定性 分子筛 |
THE EFFECT OF HYDROTHERMAL TREATMENT ON THE THERMAL STABILITY OF ULTRASTABLE Y ZEOLITES |
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| Kuang Yueping. THE EFFECT OF HYDROTHERMAL TREATMENT ON THE THERMAL STABILITY OF ULTRASTABLE Y ZEOLITES[J]. Natural Science Journal of Xiangtan University, 1993, 15(2): 70-74 |
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| Authors: | Kuang Yueping |
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| Abstract: | It has been shown that all the ultrastable Y zeolites,especially FSEY and HSY,have better thermal stability than NH_4Yzeolite, However,after steam treatment, the thermal stability ofall ultrastable Y zeolites,especially FSEY and HSY,were decreased.According to IR,~(27)Al NMR,~(29)Si NMR and XRD, it seemed that thenonfamework aluminum formed during the steam treatment gave rise tothe decrease. As a result of the decrease, the difference among theultrastable Y zeolites after hydrothermal treatment became much smallerthan before hydrothermal treatment,but the thermal stability of FSEYand HSY was still slightly better than that of USY,ReY and SRNY. |
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| Keywords: | ultrastable Y zeolite hydrothermal treatment thermal stability nonframewerk aluminum |
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