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| HY沸石催化剂催化苯酚和三氯乙醛的二次缩合反应 | |
| 引用本文： | 盖利刚,马玉道,王琪珑,李振环,崔得良.HY沸石催化剂催化苯酚和三氯乙醛的二次缩合反应[J].石油化工,2005,34(5):454-459. |
| 作者姓名： | 盖利刚 马玉道 王琪珑 李振环 崔得良 |
| 作者单位： | 1. 山东大学,化学与化工学院,山东,济南,250100 2. 中国科学院,山西煤炭化学研究所,山西,太原,030001 3. 山东大学,晶体材料研究所,山东,济南,250100 |
| 摘 要： | 以三氯乙醛为亲电试剂,在HY沸石催化剂上实现了苯酚和三氯乙醛的二次缩合反应。研究了反应温度、时间、催化剂(催化剂用量、硅铝比、催化剂失活、回收和再生)、溶剂、原料配比、投料方式等反应参数对二次缩合反应的影响,筛选了催化剂,优化了反应参数。研究结果表明,硅铝比较高的HY沸石催化剂,Brnsted酸位较少,和含有孤对电子的酚羟基氧的相互作用较弱,保证了芳环的亲核性,可以较好地催化苯酚和三氯乙醛的二次缩合反应。 |
| 关 键 词： | HY沸石 催化剂 苯酚 三氯乙醛 二次缩合反应 |
| 文章编号： | 1000-8144(2005)05-0454-06 |
| 修稿时间： | 2004年11月9日 |
Consecutive Condensation of Phenol and Chloral over HY Zeolite Catalysts |
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| Gai Ligang,Ma Yudao,Wang Qilong,Li Zhenhuan,Cui Deliang.Consecutive Condensation of Phenol and Chloral over HY Zeolite Catalysts[J].Petrochemical Technology,2005,34(5):454-459. | |
| Authors: | Gai Ligang Ma Yudao Wang Qilong Li Zhenhuan Cui Deliang |
| Affiliation: | Gai Ligang1,Ma Yudao1,Wang Qilong1,Li Zhenhuan2,Cui Deliang3 |
| Abstract: | Condensation of phenol and chloral over HY zeolite catalysts was studied in detail.The reaction mechanism and conditions,namely reaction temperature,time,catalyst,solvent,and proportion of reactants and their addition order,were investigated.Catalyst preparation and reaction conditions were optimized.With increase of n(Si)∶n(Al),interaction between Brnsted acid sites and phenol hydroxyl weakened and nucleophilicity of aromatic ring enhanced.Therefore,HY zeolite with high n(Si) ∶n(Al)was suitable catalyst for consecutive condensation of phenol and chloral.Deactivation of the catalysts was mainly caused by strong polar reactant-phenol,by-products and stereoeffect of consecutive condensation products.Regenerated HY zeolite catalysts could be reused for many times. |
| Keywords: | HY zeolite catalyst phenol chloral consecutive condensation |
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