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Table 4 Esterification of Oleic acid and rice bran oil have been performed with glycerol (3:1) in the presence of SiO2-TiO2 and SiO2-Al2O3(6 h; T = 200 °C, catalyst = 2 % by weight, 84 % FFAs, 16 % triglycerides)

From: The use of rice bran oil within a biorefinery concept

  Catalyst Substrate Starting FFAs (%) Final FFAs (%) Conv (%)
1 SiO2-TiO2 Oleic acid 100 5.0 95.0
2 SiO2-Al2O3 Oleic acid 100 11.0 89.0
3 SiO2-TiO2 Rice bran oil 84.2 7.0 92.0
4 SiO2-Al2O3 Rice bran oil 84.2 19.0 77.0