非缓冲体系柠檬酸对超稳Y型分子筛的改性 Ⅰ.催化剂的制备与结构表征 |
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引用本文: | 丁荣刚,阎子峰,刘欣梅,钱岭,王槐平.非缓冲体系柠檬酸对超稳Y型分子筛的改性 Ⅰ.催化剂的制备与结构表征[J].石油化工,1998(6). |
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作者姓名: | 丁荣刚 阎子峰 刘欣梅 钱岭 王槐平 |
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作者单位: | 石油大学炼制系,石油大学仪器分析中心 |
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摘 要: | 研究了非缓冲体系条件下,用柠檬酸对USY分子筛进一步脱铝改性的可行性。对改性后的分子筛样品采用X射线衍射测试、差热分析等手段进行了结构与性能的表征。结果表明,柠檬酸在比较温和的条件下对USY进行改性后,其硅铝比、结晶度均有所提高,热稳定性也显著增加。
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关 键 词: | 柠檬酸 超稳Y型分子筛 改性 催化裂化催化剂 |
Modification of Ultrastable Y Zeolites with Unbuffered System of Citric Acid Ⅰ.Preparation and Characterization of Catalysts |
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Abstract: | he feasibility of preparing high silicon to aluminium ratio zeolite by treating USY with unbuffered system of citric acid was exploredThe modified zeolite was characterized by XRD and DTAIt has been shown that the silicon to aluminium ratio,crystallinity and thermal stability of zeolite after moderate modification are increased |
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Keywords: | citric acid ultrastable Y zeolite modification FCC catalyst |
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