选用两步变温喷涂晶种法在大孔α-Al2O3管状载体上合成高性能的NaA沸石膜.首先,在448 K下喷涂大晶种(2μm),对载体表面的大孔进行初步修饰;然后在此基础上在353K喷涂小晶种(0.4μm),从而形成一层薄而致密的晶种层;最后在353 K水热合成NaA沸石膜.采用SEM和XRD等表征手段对制备的NaA沸石膜进行表征,并进行渗透汽化测试.测试表明:在348K下分离90％乙醇/10％水溶液,通量达到2.71 kg/(m2·h),分离因数＞2 000.
参考文献
| [1] | 徐如人;庞文琴;于吉红.分子筛与多孔材料化学[M].北京:科学出版社,2004:245-246. |
| [2] | Yoshio Morigami;Masakazu Kondo;Jun Abe;Hidetoshi Kita;Kenichi Okamoto .the first large-scale pervaporation plant using tubular-type module with zeolite NaA membrane[J].Separation and Purification Technology,2001(1):251-260. |
| [3] | Wang Z B;G-e Q Q;Gao J S et al.High-performance zeolite membranes on inexpensive large-pore supports:Highly reproducible synthesis using a seed paste[J].Chem Sus Chem,2011,4:1570-1573. |
| [4] | JURGEN CARD;MANFRED NOACK;PETER KOLSCH .Zeolite Membranes:From the Laboratory Scale to Technical Applications[J].Adsorption,2005(3/4):215-227. |
| [5] | Michael Tsapatsis .Toward High-Throughput Zeolite Membranes[J].Science,2011(Nov.11 TN.6057):767-768. |
| [6] | Yanmei Liu;Zhanzhao Yang;Congli Yu .Effect of seeding methods on growth of NaA zeolite membranes[J].Microporous and mesoporous materials: The offical journal of the International Zeolite Association,2011(2/3):348-356. |
| [7] | Li X M;Peng Y;Wang Z B et al.Synthesis of highly b-oriented zeolite MFI films by suppressing twin crystal growth during the secondary growth[J].Cryst Eng Comm,2011,13:3657-3660. |
| [8] | Zhang, FZ;Fuji, M;Takahashi, M .In situ growth of continuous b-oriented MFI zeolite membranes on porous alpha-alumina substrates precoated with a mesoporous silica sublayer[J].Chemistry of Materials,2005(5):1167-1173. |
| [9] | Won Cheol Yoo;Jared A. Stoeger;Pyung-Soo Lee .High-Performance Randomly Oriented Zeolite Membranes Using Brittle Seeds and Rapid Thermal Processing[J].Angewandte Chemie,2010(46):8699-8703. |
| [10] | Laura C.Boudreau;Michael Tsapatsis .A highly oriented thin film of zeolite A[J].Chemistry of Materials,1997(8):1705-1709. |
| [11] | Maria Pilar Bernal;George Xomeritakis;Michael Tsapatsis .Tubular MFI zeolite membranes made by secondary (seeded) growth[J].Catalysis Today,2001(1/3):101-107. |
| [12] | Re Lai;George R. Gavalas .Surface Seeding in ZSM-5 Membrane Preparation[J].Industrial & Engineering Chemistry Research,1998(11):4275-4283. |
| [13] | Huang AS;Lin YS;Yang WS .Synthesis and properties of A-type zeolite membranes by secondary growth method with vacuum seeding[J].Journal of Membrane Science,2004(1/2):41-51. |
| [14] | Toraj Mohammadi;Afshin Pak .Making zeolite a membrane from kaolin by electrophoresis[J].Microporous and Mesoporous Materials,2002(1):81-88. |
| [15] | 盛春光,杨建华,殷德宏,鲁金明,陈赞,王金渠.采用两步晶种法在大孔 α-Al2O3载体上合成NaA沸石膜[J].石油化工,2011(08):820-824. |
| [16] | 任秀秀,杨建华,陈赞,杨兴宝,鲁金明,张艳,王金渠.含氟体系下高性能丝光沸石分子筛膜的制备及其性能[J].催化学报,2012(09):1558-1564. |
| [17] | Wei Xiao;Zhan Chen;Liang Zhou .A simple seeding method for MFI zeolite membrane synthesis on macroporous support by microwave heating[J].Microporous and mesoporous materials: The offical journal of the International Zeolite Association,2011(1):154-160. |
| [18] | Xiaoxia Chen;Jinqu Wang;Dehong Yin .High-Performance Zeolite T Membrane for Dehydration of Organics by a New Varying Temperature Hot-Dip Coating Method[J].AIChE Journal,2013(3):936-947. |
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