| NH4BF4改性Y沸石的结构和性质 |
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| 引用本文： | 高滋,徐金锁.NH4BF4改性Y沸石的结构和性质[J].高等学校化学学报,1994,15(5):651-654. |
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| 作者姓名： | 高滋 徐金锁 |
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| 作者单位： | 复旦大学化学系, 上海, 200433 |
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| 基金项目： | 国家自然科学基金，中国石油化学工业总公司资助 |
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| 摘 要： | 用NH4BF4溶液处理普通的Y沸石后,得到了一系列不含B的脱铝Y沸石。本文运用多种实验手段对它们进行了表征,并与其它改性方法得到的脱铝Y沸石进行比较,发现这类Y沸石脱铝羟基空穴较少,晶格热稳定性较高,且具有特殊的表面酸性分布,因而NH4BF4处理亦是一种有特色的Y沸石改性方法。
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| 关 键 词： | NH4BF4改性Y沸石 脱铝空穴 热稳定性 酸性分布 |
| 收稿时间： | 1993-09-13 |
Structure and Properties of Y Zeolites Modified by NH_4BF_4 |
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| GAO Zi, XU Jin-Suo.Structure and Properties of Y Zeolites Modified by NH_4BF_4[J].Chemical Research In Chinese Universities,1994,15(5):651-654. |
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| Authors: | GAO Zi XU Jin-Suo |
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| Institution: | Department of Chemistry, Fudan University, Shanghai, 200433 |
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| Abstract: | A series of dealuminated Y zeolites containing no boron in the framework were prepared by treating conventional NH4Y with aqueous solution of NH4BF4. The structure and properties of these dealuminated Y zeolites were characterized with various techniques and compared with other types of modified Y zeolites. It was found that these zeolites have less dealumination defects, higher thermostability and specific acid site distribution,NH4BF4treatment is a feasible modification method for preparing dealuminated Y zeolites with special features. |
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| Keywords: | NH_4BF_4 modified Y zeolite Dealumination defects Thermal stability Acid site distribution |
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