| 改性HY沸石催化作用的研究(Ⅰ)——间二甲苯异构化生成对二甲苯的选择性 |
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| 引用本文： | 王秋莹,菅盘铭,许学翔,许言和,高芹忠,杨青山.改性HY沸石催化作用的研究(Ⅰ)——间二甲苯异构化生成对二甲苯的选择性[J].兰州大学学报(自然科学版),1990(4). |
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| 作者姓名： | 王秋莹 菅盘铭 许学翔 许言和 高芹忠 杨青山 |
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| 作者单位： | 兰州大学化学系
(王秋莹，菅盘铭，许学翔，许言和，高芹忠)，兰州大学化学系(杨青山) |
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| 摘 要： | 用载铂HY沸石作催化剂进行了间二甲苯异构化反应,与未载铂的HY沸石比较、其对二甲苯的选择性有明显提高.经NH_3 TPD法证实载铂后总酸度、酸强度降低,说明载铂HY的酸性和择形度有利于对二甲苯的生成,研究了该反应的脉冲反应动力学.
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| 关 键 词： | 沸石 催化 异构化反应 选择性 Pt |
A Catalysis Study on the HY Zeolite Modified with Pt The Para-isomer Selectivity of Meta-xylene Isomerization |
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| Wang Qiuying,Jian Panming,Xu Xuexiang,Xu Yanhe,Gao Qinzhong,Yang Qingshan.A Catalysis Study on the HY Zeolite Modified with Pt The Para-isomer Selectivity of Meta-xylene Isomerization[J].Journal of Lanzhou University(Natural Science),1990(4). |
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| Authors: | Wang Qiuying Jian Panming Xu Xuexiang Xu Yanhe Gao Qinzhong Yang Qingshan |
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| Institution: | Department of Chemistry |
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| Abstract: | The selectivity for para-isomer in isomerization of meta-xylene over HY type zeolite modified with Pt is determined by pulsed-chromatographictechnique.when the supportiing Pt is0.5% on the HY zeolite the conversionof meta-xylene is 63%,the selectivity for para-isomer reaches 94%.This reaction is still an acid catalysis which can be measured by the methodof dose poisoning pulse gas chromatography with the poison pyridine.Theabsorption quantity of NH_3 on modified zeolite samples decreases shar ply.This shows that there exists the effect of pore fouling shape selection.Thereaction appears as a first order kinetic characteritic.The apparent activa-tion energy is 67.1KJ/Mol. |
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| Keywords: | Zeolite Catalysis Isomerization reaction Selectivity Pt |
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