| 超稳Y沸石热稳定性的研究 |
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| 引用本文： | 何农跃,施其宏,邱孝培,张信,匡跃平.超稳Y沸石热稳定性的研究[J].石油化工,1994(2). |
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| 作者姓名： | 何农跃 施其宏 邱孝培 张信 匡跃平 |
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| 作者单位： | 湘潭大学中心实验室，汕头大学化学系，长岭炼油厂，湘潭广播电视大学，中国石油天然气总公司炼化局 |
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| 摘 要： | 本文结合工业应用的需要，采用ＤＴＡ对Ｙ沸石及超稳Ｙ沸石ＦＳＥＹ、ＵＳＹ、ＨＳＹ、ＲｅＹ和ＳＲＮＹ水热处理前后的热稳定性进行了系统考察。结果表明，各类超稳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，但经水热处理后其差距变小并且晶格破坏温度都有所降低。ＸＲＤ、ＦＴ－ＩＲ和￣（２９）Ｓｉ、￣（２７）ＡｌＭＡＳＮＭＲ测试结果表明，水热处理过程中产生的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，水热处理，非骨架铝，热稳定性 |
The Study on the Thermal Stability of Ultrastable Y Zeolites |
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| He Nongyue.The Study on the Thermal Stability of Ultrastable Y Zeolites[J].Petrochemical Technology,1994(2). |
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| Authors: | He Nongyue |
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| Abstract: | It has been show that all ultrastable Y zeolites,especially FSEY and HSY,have betterthermal stability than NH_4Y zeolite. However,after steam treatment, the thermal stabilityof all ultrastable Y zeolites,especially FSEY and HSY,decreased, and it seemed that,from IR,￣(27)Al MAS NMR,￣(29)Si MAS NMR and XRD results,the nonframework aluminumformed during the steam treatment was the cause of the decrease. As a result of the de-crease,the difference among the ultrastable Y zeolites after hydrothermal treatment be-came much smaller than that prior to hydrothermal treatment, but the thermal stability ofFSEY and HSY is still slightly better than that of USY,ReY and SRNY. |
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| Keywords: | ultrastable Y zeolite hydrothermal treatment thermal stability nonframeworkaluminum |
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