摘要
研究了以稀土元素Sm、Nd、Y对固体超强酸SO2-4/TiO2进行改性,并用于催化合成二芳基乙烷,考察了影响反应的因素。结果表明,稀土掺杂固体超强酸SO2-4/TiO2/REn+具有催化性能高、性能稳定且连续催化活性基本保持不变的优点。最佳实验条件为:苯乙烯与二甲苯之比为1∶7.5,催化剂用量为1%(总投料质量分数),反应时间为3小时,反应温度为回流温度,产率可达96.7%。
The synthesis of diphenylethylane with xylol and styrene as reactants and solid superacid SO_4^(2-)/TiO_2 doped with rare earth metal ions as catalyst has been studied. The factors that have influence on the reaction have been also investigated. The results showed that the optimal conditions were using 1% of catalyst with the molar ratio of xylol to styrene being 7.5∶1 and the reaction temperature being 140℃ and reaction time being 3h. The yield of diphenylethylane under such conditions was about 97.5%.The catalyst showed many advantages such as high catalytic activity and stability, abatement of pollution and corrosiveness.
出处
《稀土》
EI
CAS
CSCD
北大核心
2005年第2期8-10,14,共4页
Chinese Rare Earths
基金
山东省教育厅资助课题(JOOC54)
关键词
稀土固体超强酸
催化活性
合成
二芳基乙烷
rare earth solid surperacid
catalytic activity
synthesis
diphenylethylane
