| 硅藻土为原料原位晶化合成ZSM-5分子筛 |
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| 引用本文： | 刘春英,柳云骐,冯锡兰,崔敏,李汝奕,董洁.硅藻土为原料原位晶化合成ZSM-5分子筛[J].当代化工,2016(2):265-268. |
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| 作者姓名： | 刘春英 柳云骐 冯锡兰 崔敏 李汝奕 董洁 |
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| 作者单位： | 1. 中国石油大学(华东) 理学院,山东 青岛,266580;2. 中国石油大学(华东) 化学工程学院,山东 青岛,266580;3. 辽河油田建设工程公司,辽宁 盘锦,124010 |
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| 摘 要： | 以硅藻土为原料,采用原位晶化方法合成ZSM-5分子筛,考察了晶化时间、水硅比、模板剂用量等因素对合成分子筛的影响。采用X射线衍射(XRD)、扫描电子显微镜(SEM)、热重(TG)手段对所合成的样品进行了表征。得出了最适宜的合成条件:晶化温度170℃,晶化时间为72 h,水硅比为n(H_2O):n(SiO_2)=45~96,模板剂用量为n(模板剂):n(Al_2O_3)=12~20。该法合成的ZSM-5分子筛具有较高的相对结晶度,具有较小的粒径且分布均一,粒径为400~500 nm。
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| 关 键 词： | 硅藻土 ZSM-5分子筛 原位晶化 |
Synthesis of ZSM-5 Zeolites From Diatomite by In-situ Crystallization |
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| Abstract: | ZSM-5 zeolites were synthesized from diatomite as raw material by in-situ crystallization. The preparation factors were investigated such as crystallization time, water content, and template content. The synthesized samples were characterized by means of XRD, SEM, and TG. The optimal synthesis conditions for ZSM-5 zeolites were obtained as follows: crystallization temperature 170 ℃, crystallization time 72 h, n(H2O):n(SiO2) = 45~96, n(template):n(Al2O3) = 12~20. The prepared ZSM-5 zeolites has high crystallinity,small and uniform particle size of 400~500 nm. |
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| Keywords: | Diatomite ZSM-5 zeolite In-situ crystallization |
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