Z. Guangming
2005
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Journal
China Surfactant Detergent & Cosmetics
Abstract
The synthesis of pentaerythritol triacrylate(PETA)catalyzed by a solid super acid SO~(2-)_4/TiO_2/La~(3+) was studied.The effects of the reaction condition on productivity rate and the catalyst preparation condition on the catalyst activity were investigated with optimal process conditions obtained.The features of the catalyst surface constitution and the catalysis mechanism were also briefly discussed.Experimental results show the recommended conditions are,ratio of acid to alcohol 3.5∶1,amount of catalyst,polymerization retarder and toluene were 2 %,1.5 % and 55 % respectively,reaction time 3 h at about 120 ℃,activation temperature of the catalyst 500 ℃,activation time 3 h,productivity rate 78.5 %。