研制了新型纯硅沸石Silicalite-1/聚二甲基硅氧烷(PDMS)无机有机复合膜,进行了乙醇/水渗透汽化性能评价实验,采用扫描电镜(SEM)和X射线衍射(XRD)对膜的物理及微观结构分析和表征.分别采用原位法和晶种法制备性能相异的纯硅底膜.通过调控PDMS溶液的浓度来控制涂层的厚度和性能,研究Silicalite-1层和PDMS层对复合膜性能的影响.结果表明:所制备的无机有机复合膜在渗透汽化过程中表现出良好的稳定性,在保持高渗透通量的同时,复合膜的选择性得到了相当的提高.在60℃和乙醇质量分数为5%时,复合膜的通量和分离系数分别高达2.67 kg/(m2·h)和54.9.
参考文献
| [1] | Noack M;Kolsch P;Schafer R et al.Preparation of MFI membranes of enlarged area with high reproducibility[J].Microporous and Mesoporous Materials,2002,49:25-37. |
| [2] | Yan Y;Davis M E;Gavalas G R .Preparation of zeolite ZSM-5 membrane by in-situ crystallization on porousAl2O3[J].Industrial and Engineering Chemistry Research,1995,34:1652-1661. |
| [3] | Lin X;Kita H;Okamoto K .Silicalie membrane preparation,characterization,and separation performance[J].Industrial and Engineering Chemistry Research,2001,40:4069-4078. |
| [4] | Matsufuji T;Nishiyama N .Separation of butane and xylene isomers with MFI-type zeolitic membrane synthesized by a vapor-phase transport method[J].Journal of Membrane Science,2000,178:25-34. |
| [5] | Mikihiro Nomura;Tang Bin;Sin-ichi Nakao .Selective ethanol extraction from fermentation broth using a silicalite membrane[J].Separation and Purification Technology,2002(1):59-66. |
| [6] | Bowen T C;Kalipcilar H;Falconer J L .Pervaporation of organics/water mixtures through B-ZSM-5 zeolite membranes on monolith supports[J].Journal of Membrane Science,2003,215:235-247. |
| [7] | Sano T;Yanagishita H;Kiyozumi Y .Separation of ethanol/water mixture by silicalite membrane on pervaporation[J].Journal of Membrane Science,1994,95:221-228. |
| [8] | Kong CL;Lu JM;Yang JH;Wang JQ .Preparation of silicalite-1 membranes on stainless steel supports by a two-stage varying-temperature in situ synthesis[J].Journal of Membrane Science,2006(1/2):258-264. |
| [9] | Zhao Q Y;Wang J Q;Chu N et al.Preparation of high-permeance MFI membrane with the modified secondary growth method on the macroporous α-alumina tubular support[J].Journal of Membrane Science,2008,320(1-2):303-309. |
| [10] | Kong C;Lu J;Wang J Q .Catalytic dehydrogenation of ethylbenzene to styrene in a zeolite siliealite-1 membrane reactor[J].Journal of Membrane Science,2007,306(1-2):29-35. |
| [11] | 张雄福,王金渠,刘海鸥,刘长厚.沸石膜反应器苯脱氢反应性能[J].高校化学工程学报,2001(02):121-126. |
| [12] | 孙维国,杨建华,王爱芳,王金渠,韩会林,鲁金明.两步变温水热合成制备纯硅分子筛膜及其渗透性能[J].过程工程学报,2008(03):599-602. |
| [13] | Toru Ikegami;Hiroshi Yanagishita;Dai Kitamoto;Hideyuki Negishi;Kenji Haraya;Tsuneji Sano .Concentration of fermented ethanol by pervaporation using silicalite membranes coated with silicone rubber[J].Desalination: The International Journal on the Science and Technology of Desalting and Water Purification,2002(1/3):49-54. |
| [14] | H. Matsuda;H. Yanagishita;H. Negishi;D. Kitamoto;T. Ikegami;K. Haraya;T. Nakane;Y. Idemoto;N. Koura;T. Sano .Improvement of ethanol selectivity of silicalite membrane in pervaporation by silicone rubber coating[J].Journal of Membrane Science,2002(2):433-437. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%