Optimization of Process Variables in the Synthesis of Tributyl Citrate Using a Polyvinylpolypyrrolidone-Supported Brønsted Acidic Ionic Liquid Catalyst

<div>Effect of the reaction temperature on the esterification of citric acid with n-butanol. Reaction conditions: citric acid, 0.06 mol; n-butanol, 0.3 mol; catalyst, 6 wt%; temperature, 115°C.</div>

International Journal of Polymer Science

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Figure 4

Figure 4: Optimization of Process Variables in the Synthesis of Tributyl Citrate Using a Polyvinylpolypyrrolidone-Supported Brønsted Acidic Ionic Liquid Catalyst 

Figure 4 | Optimization of Process Variables in the Synthesis of Tributyl Citrate Using a Polyvinylpolypyrrolidone-Supported Brønsted Acidic Ionic Liquid Catalyst 