Study on titanates catalysts supported on silica gel and their application to esterification reaction was written by Wang, Xiaoling;Xu, Jiaye;Yang, Xueting. And the article was included in Xi’an Shiyou Daxue Xuebao, Ziran Kexueban in 2008.Category: esters-buliding-blocks The following contents are mentioned in the article:
The solid supporting catalysts-silica supporting titanates are synthesized by the reactions of titanium tetrachloride firstly with 2- ethylhexanol of different mole ratios and then with silica gel. The reaction conditions are optimized by orthogonal experiments The results show that the preferable conditions are as follows: the titanium tetrachloride to 2-ethylhexanol mole ratio of 1:3; the reaction temperature of 120°; the reaction time of 2 h; and the theoretic solid supporting rate of 20%. The content of titanium in the solid supporting titanate is measured, and the silica supporting catalysts are characterized by IR spectroscopy. The solid supporting catalysts of different amount are applied to the esterification reaction of benzoic acid with 2-ethylhexanol, and the catalysis effect of them is compared with that of titanate. It is found that the the activity of solid supporting catalysts is worse than that of titanate, but among the solid supporting catalysts, the solid supporting catalyst prepared by the titanium tetrachloride to 2-ethylhexanol mole ratio of 1:2 has the best catalyzing effect, and it has also higher activity after being used repeatedly 5 times, which shows the silica supporting catalyst has good stability. This study involved multiple reactions and reactants, such as 2-Ethylhexyl benzoate (cas: 5444-75-7Category: esters-buliding-blocks).
2-Ethylhexyl benzoate (cas: 5444-75-7) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Category: esters-buliding-blocks
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics