Novel Glycerol Based Heterogeneous Carbon Base Catalyst Useful For The Transesterification Of Vegetable Oils To Biodiesel, A Process And Use Thereof.

Abstract

The present invention provides heterogeneous carbon-based solid base catalyst from glycerol-based carbon acid catalyst and a novel method for the preparation of heterogeneous carbon-based solid base catalyst from glycerol-based carbon acid catalyst by treating with alkali solution. This glycerol-based solid base catalyst is employed for transesterification of vegetable oils like sunflower oil, high oleic sunflower oil, soybean oil, palm oil, castor oil, rice bran oil and any other refined clean oils for the preparation of biodiesel. This catalyst is highly active, reusable, moisture tolarent and simplifies the biodiesel process particularly for transesterification of vegetable oils by replacing the traditional homogeneous alkaline catalysts. The present invention also provides a two-step process for the production of biodiesel from high free fatty acid containing non-edible oils namely jatropha, karania, deodorizer distillate, used oils and animal fat by employing glycerol-based carbon acid catalyst for esterification followed by carbon-based base catalyst for transesterification thus replacing sulfuric acid and alkali respectively thus making the biodiesel process more environmentally friendly.

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