In this paper, we study the preparation of catalyst calcium oxide shell bumble bee cal ไซน์ที่ 900 temperature and C 2 hours. Using the method of coating embed potassium iodide. In the dilute post byusing potassium in the catalyst.Potassium content of coating buried since 15-25%wt.Weight of calcium oxide,. Weight of catalyst used in the reaction%wt, since 1-3. And the molar ratio of methanol to oil equals 6: 1 9: and, 1 12:1 reaction time, temperature and C 60 3 hours. Found that calcium oxide catalysts doped potassium can be used to produce biodiesel from oil palm. The percent conversion of 83%.
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