| 硅铝胶老化温度对气相转移法合成MCM-22分子筛的影响 |
| |
| 引用本文： | 刘星生,李英霞.硅铝胶老化温度对气相转移法合成MCM-22分子筛的影响[J].石油化工,2011,40(1):34-37. |
| |
| 作者姓名： | 刘星生 李英霞 |
| |
| 作者单位： | 1. 江西师范大学化学化工学院,江西南昌,330022
2. 北京化工大学化工资源有效利用国家重点实验室,北京,100029 |
| |
| 摘 要： | 以硅酸为硅源、偏铝酸钠为铝源制备硅铝胶,采用气相转移法(VPT)合成了MCM-22分子筛。采用TG-DTA,~(27)AlMAS NMR,~(29)Si MAS NMR等方法对硅铝胶进行了表征,讨论了硅铝胶老化温度对硅铝胶结构及合成MCM-22分子筛的影响。实验结果表明,硅铝胶老化温度的改变影响硅铝胶的含水量和Si的存在形式,导致在合成MCM～22分子筛过程中硅铝胶能够提供的结构单元不一样,从而影响MCM-22分子筛的合成。硅铝胶老化温度为80℃时,硅铝胶的含水量最高,Si的存在形式更具多样性,有利于硅铝胶后期的晶化合成。
|
| 关 键 词： | 硅铝胶 老化温度 气相转移法 MCM-22分子筛 |
Effect of Aluminosilica Gel Aging Temperature on Synthesis of MCM-22 Molecular Sieves by Vapor-Phase Transfer |
| |
| Liu Xingsheng,Li Yingxia.Effect of Aluminosilica Gel Aging Temperature on Synthesis of MCM-22 Molecular Sieves by Vapor-Phase Transfer[J].Petrochemical Technology,2011,40(1):34-37. |
| |
| Authors: | Liu Xingsheng Li Yingxia |
| |
| Affiliation: | Liu Xingsheng~1,Li Yingxia~2 (1.College of Chemistry and Chemical Engineering,Jiangxi Normal University,Nanchang Jiangxi 330022,China,2.State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China) |
| |
| Abstract: | MCM-22 molecular sieves were synthesized through vapor-phase transfer method(VPT) from hexamethylene imine and aluminosilica gels which were prepared from silicic acid and sodium metaaluminate.The aluminosilica gels were characterized by means of TG-DTG,~(27)A1 MAS NMR and ~(29)Si MAS NMR.Effects of aging temperature of the aluminosilica gel on its structure and MCM-22 molecular sieve synthesis were investigated.The results showed that the aging temperature change affected the H_2O content and the Si form i... |
| |
| Keywords: | aluminosilica gel aging temperature vapor-phase transfer method MCM-22 molecular sieve |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《石油化工》浏览原始摘要信息 |
|
点击此处可从《石油化工》下载全文 |
|
