[1]丁民正,张小亮,王刘杰,等.以廉价高岭土和硅藻土为原料合成方沸石分子筛膜[J].江西师范大学学报(自然科学版),2014,(03):295-299.
 DING Min-zheng,ZHANG Xiao-liang,WANG Liu-jie,et al.The Synthesis of Analcime Zeolite Membranes from Local Kaolin and Diatomite[J].,2014,(03):295-299.
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以廉价高岭土和硅藻土为原料合成方沸石分子筛膜()
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《江西师范大学学报》(自然科学版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2014年03期
页码:
295-299
栏目:
出版日期:
2014-06-30

文章信息/Info

Title:
The Synthesis of Analcime Zeolite Membranes from Local Kaolin and Diatomite
作者:
丁民正;张小亮;王刘杰;卢章辉;胡娜;桂田;陈祥树
江西师范大学化学化工学院,江西省无机膜材料工程技术研究中心,江西 南昌 330022
Author(s):
DING Min-zheng;ZHANG Xiao-liang;WANG Liu-jie;LU Zhang-hui;HU Na;GUI Tian;CHEN Xiang-shu
关键词:
高岭土硅藻土方沸石分子筛膜2次生长法氢气分离
Keywords:
kaolindiatomiteanalcime zeolite membranesecondary growthhydrogen separation
分类号:
TQ028.8
文献标志码:
A
摘要:
以廉价高岭土和硅藻土为主要原料,在管状莫来石支撑体上采用2次水热生长法合成了方沸石分子筛膜.通过气体渗透性能测试和XRD、SEM等对膜进行表征,重点考察了合成溶胶中的碱度、合成温度、晶化时间对膜层的晶体形貌和结构以及渗透性能的影响.结果表明:在n( H2 O): n( Na2 O)为200的合成溶胶体系中,合成温度为150℃的条件下晶化反应6 h,可制备出结晶度好且渗透性能较高的纯相方沸石分子筛膜.室温下该膜的氢气渗透率为1.8×10-8 mol·m-2·s-1·Pa-1,H2/CO2气体分离因子为15,高于其努森扩散值(4.7).
Abstract:
The analcime( ANA)zeolite membranes were synthesized on the tubular mullite supports by the seconda-ry growth method using local cheap kaolin and diatomite as silica and aluminum sources. The X-ray diffraction ( XRD),scanning electron microscope( SEM)and gas permeation tests were used to characterize and evaluate the as-synthesized membranes. Several parameters were systematically investigated to evaluate their influence on crystal-lization and gas separation performance of the membranes,including the alkalinity,synthesis temperature and crys-tallization time. The results showed that pure ANA zeolite membranes with high crystallinity and good permeation performance were synthesized at 150℃ for 6 h under the optimized n( H2 O)/n( Na2 O)ratio of 200 in the synthesis sols. The hydrogen permeance and ideal selectivity of H2/CO2 are achieved to 1. 8 × 10 -8 mol·m-2 ·s-1 ·Pa-1 and 15,respectively,which is higher than their Knudsen diffusion values of 4. 7 at room temperature.

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备注/Memo

备注/Memo:
国家自然科学基金(21106059,21310102015);江西省自然科学基金(2010GQH0068,20122BAB203018);江西师范大学青年英才培养计划资助项目
更新日期/Last Update: 1900-01-01