| Y分子筛改性对其结构和酸性的影响 |
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| 引用本文： | 程时文,兰玲,于彦校,袁晓亮,金君素,吴平易. Y分子筛改性对其结构和酸性的影响[J]. 石化技术与应用, 2011, 29(5): 401-405 |
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| 作者姓名： | 程时文 兰玲 于彦校 袁晓亮 金君素 吴平易 |
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| 作者单位： | 1. 北京化工大学化学工程学院,北京,100029
2. 中国石油石油化工研究院,北京,100195 |
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| 基金项目： | 中国石油石油化工研究院资助基金项目(项目名称:多产乙烯原料的加氢裂化催化材料研究;项目编号:09-YK-05-07) |
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| 摘 要： | 采用铵交换、水热处理、水热-草酸处理的方法对Y分子筛进行改性，考察了改性方法对Y分子筛的硅铝比、相对结晶度、晶胞常数、比表面积、孔结构、骨架振动及酸性的影响。结果表明，随着改性程度的加深，Y分子筛的体相和骨架硅铝比均增大，晶胞常数由2．4630nm降至2．4462nm，并可保持较高的相对结晶度；水热处理后产生大量的非骨架铝，再经草酸处理可有效脱除所产生的非骨架铝，表现出更高的比表面和二次孔孔容；总酸量下降，中强酸酸量增大；水热处理后强L酸量增加，草酸改性则可以提高B酸量。
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| 关 键 词： | 分子筛 Y分子筛 铵离子交换 水热处理 草酸 酸性 晶胞常数 孔容 |
Effects of modification methods on structure and acidic property of Y zeolite |
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| Cheng Shiwen,Lan Ling,Yu Yanxiao,Yuan Xiaoliang,Jin Junsu,Wu Pingyi. Effects of modification methods on structure and acidic property of Y zeolite[J]. Petrochemical Technology & Application, 2011, 29(5): 401-405 |
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| Authors: | Cheng Shiwen Lan Ling Yu Yanxiao Yuan Xiaoliang Jin Junsu Wu Pingyi |
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| Affiliation: | Cheng Shiwen1,Lan Ling2,Yu Yanxiao1,Yuan Xiaoliang2,Jin Junsu1,Wu Pingyi2(1.College of Chemical Engineering,Beijing University of Chemical Technology,Beijing 100029,China,2.Petrochemical Research Institute,PetroChina,Beijing 100195,China) |
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| Abstract: | Y zeolites were modified by different isomorphous substitution methods,including ammonium ion exchange,hydrothermal treatment and hydrothermal-oxalic acid treatment.The effects of modification methods on the Si/Al molar ratio,relative crystallinity,unit cell constant,specific surface area,pore structure,skeletal vibration and acidic property were investigated.The results showed that with deepening modification,the Si/Al mole ratio increased in bulk phase and framework of Y zeolite,the unit cell constant(a0)... |
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| Keywords: | zeolite Y zeolite ammonium ion exchange hydrothermal treatment oxalic acid acidic property unit cell constant pore structure |
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