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

<div>Reusability of the [BsPVPP]HSO<sub>4</sub> catalyst for the esterification of citric acid with n-butanol. Reaction conditions: citric acid, 0.06 mol; n-butanol, 0.31 mol; catalyst, 6.6 wt%; temperature, 120°C; time, 5.5 h.</div>

International Journal of Polymer Science

fig6

Figure 6

Figure 6: Optimization of Process Variables in the Synthesis of Tributyl Citrate Using a Polyvinylpolypyrrolidone-Supported Brønsted Acidic Ionic Liquid Catalyst 

Figure 6 | Optimization of Process Variables in the Synthesis of Tributyl Citrate Using a Polyvinylpolypyrrolidone-Supported Brønsted Acidic Ionic Liquid Catalyst 