| 甲醇脱水生成二甲醚的沸石催化剂 |
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| 引用本文： | 刘志坚,廖建军,谭经品,李大东.甲醇脱水生成二甲醚的沸石催化剂[J].石油化工,1999,28(4):2. |
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| 作者姓名： | 刘志坚 廖建军 谭经品 李大东 |
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| 作者单位： | 1. 长岭炼油化工总厂,湖南省岳阳,414012
2. 石油化工科学研究院,北京,100083 |
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| 摘 要： | 用压力微反装置评价甲醇脱水生成二甲醚沸石催化剂的活性，用ＸＲＤ、２４００吸附仪和ＮＨ３－ＴＰＤ研究沸石催化剂的结构及表面酸性。试验结果表明，沸石表面的强酸中心是甲醇脱水生成二甲醚的活性中心。该中心易受Ｎａ２Ｏ中毒而失活，催化剂的活性顺序是ＺＳＭ ５型沸石＞β型沸石＞Ｙ型沸石＞γ Ａｌ２Ｏ３。同时，还考察了ＳｉＯ２／Ａｌ２Ｏ３摩尔比、焙烧温度、晶粒大小、反应条件对甲醇脱水生成二甲醚反应的影响。
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| 关 键 词： | 沸石催化剂 甲醇 二甲醚 |
| 修稿时间： | 1998-11-24 |
Study on the Zeolite Catalysts for Dimethyl Ether Synthesis from Methanol |
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| LIU Zhi-jian,LIAO Jian-jun,TAN Jing-pin,LI Da-dong.Study on the Zeolite Catalysts for Dimethyl Ether Synthesis from Methanol[J].Petrochemical Technology,1999,28(4):2. |
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| Authors: | LIU Zhi-jian LIAO Jian-jun TAN Jing-pin LI Da-dong |
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| Abstract: | The activity of zeolite catalysts were evaluated using a pressure microreactor.The structure and the surface acidity of zeolite catalysts were studied using XRD,2400 adsorber and NH 3 TPD.The results demonstrate that the strong acid sites on zeolite surface form the active sites for dimethyl ether synthesis from ethanol,this kind of sites easily deactivate because of Na 2O poisoning,and the activity of zeolite catalysts decreases in the order of ZSM 5>β>Y>γ Al 2O 3.The influence of SiO 2/Al 2O 3 ratio,calcination temperature,grain size,and reaction conditions was also studied. |
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| Keywords: | zeolite catalysts methanol dimethyl ether |
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