| 石雷.Na2O或K2O对气相合成1–苯基氮杂环庚烷的CoO/SiO2-Al2O3催化剂的作用[J].分子催化,2012,(4):340-346 |
| Na2O或K2O对气相合成1–苯基氮杂环庚烷的CoO/SiO2-Al2O3催化剂的作用 |
| Effect of Na2O or K2O on CoO/SiO2-Al2O3 Catalyst for the Vapor-Phase Synthesis of 1-Phenylazepane |
| 投稿时间：2012-03-20 修订日期：2012-07-19 |
| DOI： |
| 中文关键词: Na2O, K2O, CoO/SiO2-Al2O3, 1–苯基氮杂环庚烷, 气相合成 |
| 英文关键词:Na2O, K2O, CoO/SiO2-Al2O3, 1-Phenylazepane, Vapor-phase synthesis |
| 基金项目:辽宁省教育厅基金(2009A421) |
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| 中文摘要: |
| 研究了Na2O或K2O对苯胺和1,6己二醇气相合成1–苯基氮杂环庚烷的CoO/SiO2-Al2O3催化剂的作用，并采用X射线衍射、透射电子显微镜、H2–程序升温还原、NH3–程序升温脱附等技术对催化剂进行了表征。结果表明，Na2O助剂能增加催化剂的弱酸中心数，减少中强酸中心数，使催化剂的选择性得到提高。加入K2O使催化剂的弱酸中心数显著减少，并使CoO在反应过程中易于烧结，因此不利于1–苯基氮杂环庚烷的合成。 |
| 英文摘要: |
| The CoO/SiO2-Al2O3 doped with Na2O or K2O for the vapor-phase synthesis of 1-phenylazepane from aniline and 1,6-hexanediol was studied. The catalysts were characterized by XRD, TEM, H2-TPR and NH3-TPD. The results indicated that Na2O not only increased the amount of weak acid sites of the catalyst, but also decreased the amount of the middle-strong acid sites, as a result, Na2O improved the selectivity of the catalyst. The addition of K2O took disadvantage of the synthesis of 1-phenylazepane for the amount of weak acid sites decreased remarkably and the CoO particles were sintered easily during the reaction. |
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