2018
DOI: 10.3390/membranes8030043
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Abstract: Continuous and high silica SSZ-13 zeolite membranes were prepared on porous mullite supports from high SiO2/Al2O3 ratio or aluminum-free precursor synthesis gel. Single gas permeance (CO2 and CH4) of the high silica SSZ-13 zeolite membrane was decreased with the SiO2/Al2O3 ratio in the precursor synthesis gel, while the ideal CO2/CH4 selectivity of the membrane was gradually increased. Moreover, effects of synthesis conditions (such as H2O/SiO2 and RNOH/SiO2 ratios of precursor synthesis gel, crystallization t… Show more

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Cited by 18 publications
(17 citation statements)
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References 31 publications
(40 reference statements)
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“…High silica SSZ-13 zeolite membranes were prepared as reported in our previous work. 37 The precursor synthesis gel composition of the membranes was 1000 SiO 2 /100 Na 2 O/5Al 2 O 3 /100 TMAdaOH/80000 H 2 O, and the Si/Al ratio of the as-prepared membrane was 79. In this work, the as-synthesized SSZ-13 zeolite membranes were post-treated by inorganic acid, including H 2 SO 4 (Xinguang, 95%−98%), HCl (Xinguang, 36%−38%), HNO 3 (Aike, 1.51 g/cm 3 ) and H 3 PO 4 (Fuchen, 85%).…”
Section: Methodsmentioning
confidence: 99%
“…High silica SSZ-13 zeolite membranes were prepared as reported in our previous work. 37 The precursor synthesis gel composition of the membranes was 1000 SiO 2 /100 Na 2 O/5Al 2 O 3 /100 TMAdaOH/80000 H 2 O, and the Si/Al ratio of the as-prepared membrane was 79. In this work, the as-synthesized SSZ-13 zeolite membranes were post-treated by inorganic acid, including H 2 SO 4 (Xinguang, 95%−98%), HCl (Xinguang, 36%−38%), HNO 3 (Aike, 1.51 g/cm 3 ) and H 3 PO 4 (Fuchen, 85%).…”
Section: Methodsmentioning
confidence: 99%
“…二次生长法是预先在载体表面涂敷晶种并作为 生长中心继续生长成膜的一种合成方法 [20] (图 2), 该方法可缩短合成时间, 提高合成效率, 而且能更 好地控制膜层厚度和晶体微观结构。此外, 晶种在 载体表面的修饰作用还可减少载体对成膜过程的影 响, 避免缺陷的产生。目前国内外从事 CHA 分子筛 膜合成研究的主要团队, 基本采用二次生长法, 其 中包括最初合成 CHA 分子筛膜的科罗拉多大学的 Falconer 和 Noble 等 [5,[21][22][23] 。针对 SSZ-13 膜 的二次生长法合成, 国外课题组例如 Kosinov 和 Choi 等 [14,[24][25][26] 成功合成出薄而均匀且分离性能良好 的高硅 SSZ-13 膜; 国内的顾学红、周荣飞、陈祥树 等 [27][28][29][30][31][32][33][34]…”
Section: 二次生长法unclassified
“…The membrane also displayed extremely high CO 2 -CH 4 separation performance. Nevertheless, continuous and high silica SSZ-13 zeolite membranes were prepared on porous mullite supports from high SiO 2 /Al 2 O 3 ratio or aluminum-free precursor synthesis gel [35]. From the research, it was found that single gas permeance (CO 2 and CH 4 ) of the high silica SSZ-13 zeolite membrane decreased with the SiO 2 /Al 2 O 3 ratio in the precursor synthesis gel, while the ideal CO 2 /CH 4 selectivity of the membrane was gradually increased.…”
Section: Gas Separationsmentioning
confidence: 99%