| 王潇潇.Cu改性SAPO-11分子筛催化萘和甲醇甲基化反应的研究[J].分子催化,2016,30(5):435-443 |
| Cu改性SAPO-11分子筛催化萘和甲醇甲基化反应的研究 |
| Study on Methylation of Naphthalene with Methanol over SAPO-11 Zeolites Modified by Cu |
| 投稿时间：2016-08-03 修订日期：2016-09-20 |
| DOI： |
| 中文关键词: SAPO-11分子筛 Cu改性 水热合成法 浸渍法 萘 2, 6 -二甲基萘 |
| 英文关键词:SAPO-11 zeolite Cu modification Hydrothermal synthetic method Impregnation method Naphthalene 2,6-Dimethylnaphthalene |
| 基金项目:太原科技大学校青年科技研究基金项目（20153006）；山西省青年科技研究基金（2015021042） |
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| 中文摘要: |
| 分别采用水热合成法和浸渍法对SAPO-11分子筛进行Cu改性。通过XRD、SEM、NH3-TPD、TPR、29SiMAS NMR以及N2 adsorption-desorption等表征手段对改性前后SAPO-11分子筛的结构、酸性进行表征，并研究了改性后分子筛催化合成2,6-二甲基萘反应性能的影响规律。结果表明，经水热合成法进行Cu改性的SAPO-11分子筛结晶度升高，酸中心数量增加，比表面积和孔体积上升，从而使萘的转化率、2,6-二甲基萘的选择性、2,6-二甲基萘与2,7-二甲基萘的比值及2,6-二甲基萘的收率提高。 |
| 英文摘要: |
| In this paper, SAPO-11 zeolite catalyst has been modified by Cu through the use of hydrothermal synthetic method and impregnation method, respectively. The structure and acid property of SAPO-11 before and after modification were characterized by XRD, SEM, NH3-TPD, TPR, 29SiMAS NMR and N2 absorption-desorption, and the influence of the catalytic performance of SAPO-11 zeolite modified on the synthesis of 2,6-dimethylnaphthalene (2,6-DMN) was also studied. Results show that SAPO-11 zeolite was modified by Cu through hydrothermal synthetic method, the crystallinity of zeolite was increased, the amount of acidic sites, surface area and pore volume were increased. As a result, the naphthalene conversion, 2,6-DMN selectivity, the ratio of 2,6-DMN to 2,7-DMN and 2,6-DMN yield increased significantly. |
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