以二乙胺(DEA)为模板剂,合成了SAPO-34分子筛,详细考察了磷酸用量、水用量以及硅源和铝源等因素的影响.结果表明,在0.7≤ n(P2O5)/n(Al2O3)≤1.2及25≤n(H2O )/n( Al2O3)≤100范围内,可以得到纯相SAPO-34分子筛,铝源对所得样品的组成影响较大.同时,采用三乙胺(TEA)、吗啉(MOR)以及二乙胺-三乙胺(DEA-TEA)混合模板剂合成了SAPO-34,通过X射线衍射、X射线荧光分析、扫描电镜、热重和29Si固体核磁共振等手段对所得样品进行了表征.结果显示,不同模板剂促使硅进入SAPO-34骨架的能力顺序为SAPO-34 (DEA)＞ SAPO-34 (MOR)＞ SAPO-34 (TEA); SAPO-34骨架中所能容纳的最大Si(4Al)含量顺序为SAPO-34 (DEA)≈SAPO-34 (MOR)＞ SAPO-34 (TEA).
参考文献
| [1] | Qi G Z;Xie Z K;Yang W M;Zhong S Q Liu H X Zhang Ch F Chen Q L .[J].Fuel Processing Technology,2007,88:437. |
| [2] | Park Y K;Baek S W;Ihm S K .[J].Journal of Industrial and Engineering Chemistry,2001,7:167. |
| [3] | Hunger M;Seiler M;Buchholz A .[J].Catalysis Letters,2001,74:61. |
| [4] | Arstad B;Kolboe S .[J].Catalysis Letters,2001,71:209. |
| [5] | Liang J;Li H Y;Zhao S Q;Guo W G Wang R H Ying M L .[J].Applied Catalysis,1990,64:31. |
| [6] | Wilson S;Barger P .[J].Microporous and Mesoporous Materials,1999,29:117. |
| [7] | Lok B M;Messina C A;Patton R L;Gajek R T,Cannan T R,Flanigen E M .[P].US 4 440 871,1984. |
| [8] | Briend M;Vomscheid R;Peltre M J;Man P P Barthomeuf D .[J].Journal of Physical Chemistry,1995,99:8270. |
| [9] | Dumitriu E;Azzouz A;Hulea V;Lutic D Kessler H .[J].Microporous Materials,1997,10:1. |
| [10] | Vistad φ B;Akporiaye D E;Taulelle F;Lillerud K P .[J].Chemistry of Materials,2003,15:1639. |
| [11] | Buchholz A;Wang W;Xu M;Arnold A Hunger M .[J].Microporous and Mesoporous Materials,2002,56:267. |
| [12] | Wei Y X;Zhang D Z;Xu L;Chang F X He Y L Meng S H Su B L Liu Z M .[J].Catalysis Today,2008,131:262. |
| [13] | 刘中民;蔡光宇;何长青;杨立新,王作周,罗静慎,常彦君,石仁敏,姜增全,孙承林 .[P].CN 1 088 483,1994. |
| [14] | 何长青;刘中民;蔡光宇;杨立新,王作周,罗静慎,潘小珊,盖增全,常彦君,石仁敏 .[P].CN 1 096 496,1994. |
| [15] | Liu G Y;Tian P;Li J Z;Zhang D Z Zhou F Liu Z M .[J].Microporous Mesoporou Mater,2008,111:143. |
| [16] | Liu G Y;Tian P;Zhang Y;Li J Z Xu L Meng S H Liu Z M .[J].Microporous Mesoporou Mater,2008,114:416. |
| [17] | Pastore H O;Coluccia S;Marchese L .[J].Annual Review of Materials Research,2005,35:351. |
| [18] | 李军,张凤美,李黎声,舒兴田.双模板剂法SAPO-34分子筛的合成及其性能[J].石油炼制与化工,2005(06):49-52. |
| [19] | Lee YJ;Baek SC;Jun KW .Methanol conversion on SAPO-34 catalysts prepared by mixed template method[J].Applied Catalysis, A. General: An International Journal Devoted to Catalytic Science and Its Applications,2007(0):130-136. |
| [20] | 何长青;刘中民;杨立新;蔡光宇 .[J].催化学报,1995,16:33. |
| [21] | 刘红星,谢在库,张成芳,陈庆龄.不同模板剂合成SAPO-34分子筛的表征与热分解过程研究[J].化学物理学报,2003(06):521-527. |
| [22] | Prakash A M;Unnikrishnan S .[J].J ChemSoc Faraday Trans,1994,90:229. |
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%