Solid Superacid So <sub> 4 </ Sub> <sup> 2 - </ Sup> / Tio <sub> 2 </ Sub> / La <sup> 3 + </ Sup> Catalytic Synthesis Of Tdcpp, Tbc Research

To phosphorus oxychloride and epichlorohydrin Synthesis of (1,3-dichloro-2-propyl) ester (TDCPP), citric acid, n-butyl alcohol synthesis of Tributyl Citrate (TBC). The catalytic properties of the catalyst SO₄^2-/TiO₂/La³⁺ in esterification of citric acid with n-butanoland phosphorus oxychloride with epichlorohydrin were studied. The correlation between its structure and properties was also investigated. And through evaluation of the activity of catalysts and physico-chemical characterization of the catalysts to study the relationship between structure and properties of the catalytic synthesis of solid superacid TDCPP,TBC industrialization and provide a useful basis.By orthogonal experiment, inspected the concentration of sulfuric acid, soaking time, the calcination temperature and baking time on the solid superacid catalyst SO₄^2-/TiO₂/La³⁺ the impact of the catalytic activity, and through IR and XRD, thermal analysis and SEM methods of catalyst were characterized.This paper reported the Acid Value and esterification synthesis of Tris (1, 3-dichloro-2-propyl) ester under TiCl₄,AlCl₃ or solid super acid SO₄^2-/TiO₂/La³⁺. The catalytic properties and stability of SO₄^2-TiO₂/La³⁺ was surveyed. The suitable synthesis condition are defined as follows: Sulfuric acid concentration is 0.8mol/L, roasting temperature550℃, the mass of La³⁺5mol%, impregnation time 24h, roasting time 3h. The yield of TDCPP was about 98. 5%. The structure of the product was defined by IR and TG.This paper reported the esterification synthesis of TBC under no catalyst, H₂S0₄, or solid super acid S0₄^2-/Ti0₂/La³⁺ The correlation between reaction conversion, water yieldand reaction time was surveyed. The effects of initial molar ratio and catalyst quantity were investigated and the optimum synthesis conditions were found. The suitable synthesis condition are defined as follows: the mass of catalyst 3.5%, n (citric acid): (n-butyl alcohol) =1: 4.5, esterification of temperaturel45℃. The yield of TBC was about 96. 5%. The structure of the products was defined by IR and TG.