Preparation of NaY zeolite membranes in fluoride media and their application in dehydration of bio-alcohols
Preparation of NaY zeolite membranes in fluoride media and their application in dehydration of bio-alcohols
复制标题
氟化物介质中NaY沸石膜的制备及其在生物醇脱水中的应用
DOI：
10.1016/j.seppur.2014.03.018
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发表时间：
2014-05
影响因子：
8.6
通讯作者：
Chen Xiangshu
中科院分区：
文献类型：
--
作者：
Zhang Fei;Xu Longnv;Hu Na;Bu Na;Zhou Rongfei;Chen Xiangshu
在氟化铵存在下制备了改性NaY分子筛膜。研究了含氟NaY分子筛膜的结晶和分离性能，并与无氟膜进行了比较。在凝胶中加入氟化铵，影响了NaY分子筛和分子筛层的晶化和形貌，有效抑制了NaY分子筛层中P型分子筛杂质相的形成。与无氟膜相比，氟化物衍生的NaY分子筛膜具有更薄的分子筛层，并且对生物醇（乙醇和丁醇）的脱水显示出更高的通量和分离因子。对于甲醇、乙醇、异丙醇和正丁醇水溶液，分离因子随醇类动力学直径的增大而增大。氟衍生膜的合成重现性和膜在脱水过程中的稳定性也进行了研究。29 Si和19 F MAS NMR结果证实，氟阴离子不包括在FAU晶体。
Improved NaY zeolite membranes were prepared in the presence of ammonium fluoride. The crystallization and separation performance of fluoride-derived NaY zeolite membranes were studied in comparison with fluoride-free membranes. The addition of ammonium fluoride in gel influenced the crystallization and the morphologies of NaY zeolite and zeolite layers, and effectively suppressed the formation of the impurity phase of P-type zeolite in NaY zeolite layers. The fluoride-derived NaY zeolite membranes had thinner zeolite layers and displayed both higher fluxes and separation factors for the dehydration of bio-alcohols (ethanol and butanol) than the fluoride-free membranes. The separation factors increased with the increasing kinetic diameters of alcohols for the methanol, ethanol,i-propanol andn-butanol aqueous solutions. Synthesis reproducibility of fluoride-derived membranes and membrane stability during the dehydration process were also investigated.29Si and19F MAS NMR results confirmed that fluorine anions were not included in FAU crystals.
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影响因子：
8.6
作者：
Kita, H;Fuchida, K;Okamoto, K
通讯作者：
Okamoto, K
DOI：
10.1016/s0167-2991(09)60864-8
发表时间：
1986
期刊：
Studies in Surface Science and Catalysis
影响因子：
--
作者：
J. Guth;H. Kessler;R. Wey
通讯作者：
J. Guth;H. Kessler;R. Wey
影响因子：
8.6
作者：
M. Attfield;C. Catlow;A. Sokol
通讯作者：
M. Attfield;C. Catlow;A. Sokol
影响因子：
9.5
作者：
Sato, Kiminori;Sugimoto, Kazunori;Nakane, Takashi
通讯作者：
Nakane, Takashi
影响因子：
5.2
作者：
M. Gualtieri
通讯作者：
M. Gualtieri