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Parametric studies of DD3R particles seeding on the modified surface of α-alumina support and synthesis of DD3R zeolite membrane
Journal of the European Ceramic Society ( IF 5.7 ) Pub Date : 2018-05-21 , DOI: 10.1016/j.jeurceramsoc.2018.05.026
Aynaz Meshkat , Mohammad Javad Vaezi , Ali Akbar Babaluo , Masoud Gohar Geranbaha

The effects of suspension concentration, number of coating stages and dipping time on seeding quality of DD3R particles on the ceramic supports were investigated. The supports were immersed in aqueous suspensions (0.1, 0.2 and 0.3 wt. %) of the DD3R seeds for three different dipping times 30, 90 and 240 s with different stages of 1, 2 and 3. The SEM analysis was used to study the quality of the seeded layers. The optimized seeding conditions of 0.2 wt. % suspension concentration, 2 number of coating stages and 30 s for dipping time leaded to obtain a uniform seeded layer with monolayer structure. The DD3R zeolite membrane was synthesized via hydrothermal method under the optimized seeding conditions. The XRD and SEM analyses confirmed the synthesis of DD3R membrane with proper quality. The single gas permeation results showed a good performance in the separation of CO2 from CH4.



中文翻译:

DD3R颗粒在α-氧化铝载体改性表面上晶种的参数研究及DD3R沸石膜的合成

研究了悬浮液浓度,涂覆阶段数和浸渍时间对DD3R颗粒在陶瓷载体上晶种质量的影响。将载体浸入DD3R种子的水悬浮液(0.1、0.2和0.3 wt。%)中,在30、90和240 s的三个不同浸入时间(1、2和3的不同阶段)中进行浸没。使用SEM分析研究种子层的质量。最佳播种条件为0.2 wt。悬浮液浓度的%,2个涂覆阶段数和30秒的浸渍时间导致获得具有单层结构的均匀种子层。在最佳接种条件下,通过水热法合成了DD3R分子筛膜。XRD和SEM分析证实了DD3R膜的合成具有适当的质量。来自CH 4的2

更新日期:2018-05-21
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