Supported SOD membrane with steam selectivity by a two-step repeated hydrothermal synthesis
Supported SOD membrane with steam selectivity by a two-step repeated hydrothermal synthesis
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两步重复水热合成具有蒸汽选择性的负载型SOD膜
DOI：
10.1016/j.micromeso.2013.08.013
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发表时间：
2014
影响因子：
5.2
通讯作者：
J. Caro
中科院分区：
文献类型：
--
作者：
Nanyi Wang;Yi Liu;A. Huang;J. Caro
采用两步重复水热合成法，制备了负载型超氧化物歧化物膜。与LTA膜相比，超氧化物歧化物膜更稳定，可用于催化膜反应器中存在H2、CH4和CO2等其他物种的水蒸气的脱除。在实际操作条件下，估算了水蒸气与可能的反应物和产物的等摩尔混合物在125~200℃之间的混合分离因子，发现H2O/H2、H2O/CH4和H2O/CO2的混合气体分离因子在125~200℃之间略有降低，分别从8.1~4.6、17.9~14.5、33.4~22.6降低。对于水和甲醇的分离，得到混合分离系数为200。
By a two-step repeated hydrothermal synthesis, supported SOD membranes have been prepared. Compared with LTA membranes, SOD membranes are more stable and can be used in the removal of steam in catalytic membrane reactors in the presence of other species like H2, CH4and CO2in the feed or retentate. Under practice-relevant conditions, the mixture separation factors for equimolar mixtures of steam with possible reactants and products have been evaluated between 125 and 200 °C. The mixed gas separations factors for H2O/H2, H2O/CH4, and H2O/CO2were found to decrease slightly with increasing temperatures from 125 to 200 °C and decrease from 8.1 to 4.6, from 17.9 to 14.5, and from 33.4 to 22.6, respectively. For the water separation from methanol a mixture separation factor of 200 was found.