Mesoporous molecular sieve (MCM-41)-filled sodium alginate hybrid nanocomposite membranes for pervaporation separation of water-isopropanol mixtures
Mesoporous molecular sieve (MCM-41)-filled sodium alginate hybrid nanocomposite membranes for pervaporation separation of water-isopropanol mixtures
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DOI：
10.1016/j.seppur.2005.08.006
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发表时间：
2006-04-01
影响因子：
8.6
通讯作者：
Aminabhavi, TM
中科院分区：
文献类型：
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作者：
Bhat, SD;Naidu, BVK;Aminabhavi, TM
采用溶液浇铸和戊二醛交联法制备了海藻酸钠（NaAlg）和MCM-41填充的NaAlg纳米复合膜。对mcm -41填充NaAlg膜的渗透蒸发性能进行了测试，并与普通NaAlg膜在30℃条件下脱水异丙醇的性能进行了比较。在10-50质量%的饲料组成范围内，20质量%的mcm -41负载NaAlg膜的选择性最高，在10-50质量%的饲料组成范围内，选择性在29,991 ~ 3332之间。普通NaAlg膜的通量在0.067 ~ 0.340 kg/(m(2)h之间，而填充20质量% mcm -41的NaAlg膜的通量增加到0.110 ~ 0.555 kg/(m(2)h)。据我们所知，这是第一次报道介孔分子筛（MCM-41）与NaAlg混合混合复合材料在异丙醇脱水中的成膜性能，在分子筛作为填料的高负载下对水产生高选择性。(c) 2005 Elsevier B.V.版权所有
Sodium alginate (NaAlg) and the inesoporous molecular sieve (MCM-41)-filled NaAlg nanocomposite membranes have been prepared by solution casting and crosslinked with glutaraldehyde. Pervaporation performance of the MCM-41-filled NaAlg membranes has been tested and compared with plain NaAlg membrane for dehydrating isopropanol at 30 degrees C. In the studied feed composition range of 10-50 mass% of water, 20 mass% MCM-41-loaded NaAlg membrane gave the highest selectivity ranging between 29,991 and 3332 in the range of feed water compositions of 10-50 mass%. Flux for the plain NaAlg membrane ranged between 0.067 and 0.340 kg/(m(2)h), while for 20 mass% MCM-41-filled NaAlg membrane, flux increased to 0.110 and 0.555 kg/(m(2)h). To the best of our knowledge, this is the first study reported on the membrane forming properties of an admixed hybrid composite of a mesoporous molecular sieve (MCM-41) with NaAlg used in dehydration of isopropanol, yielding high selectivity to water at higher loadings of the molecular sieve as a filler. (c) 2005 Elsevier B.V. All rights reserved.