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Is there a catalyst that can separate glycerin?

Q: In the production of bio-diesel and glycerol from the transetherification of jatropha oil with methanol in the presence of silica gel as the catalyst, I want to know if there is a catalyst that can separate the glycerin from the bio-diesel without the conventional method of allowing the heavier liquid to settle or the application of centrifugation?

A: I am not aware of such a catalyst. I am not sure I understand the question. Glycerol will form with the bio-diesel. Glycerol and bio-diesel are insoluble. The fact that they can phase separate in a conventional decanter is good.

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