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How To Oxidize Silicon Tetrachloride (sicl4) To Silicon Dioxide (sio2)


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#1 sandman

sandman

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Posted 02 October 2007 - 02:09 AM

hello,
I am working on a chemical process which hopefully results in SiCl4 as a byproduct. I have been unable to find a way to convert SiCl4 to SiO2 (silica) and Cl2 or HCl for recycle back into the reaction process. The only think I have found is SiCl4 + H2O = H2SiO4 + 4HCl. Is there a way to convert H2SiO4 to SiO2 and H2O? Any suggestions or leads would be helpful.

Thanks,

#2 ADL

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Posted 05 October 2007 - 01:40 PM

QUOTE (sandman @ Oct 2 2007, 02:09 AM) <{POST_SNAPBACK}>
hello,
I am working on a chemical process which hopefully results in SiCl4 as a byproduct. I have been unable to find a way to convert SiCl4 to SiO2 (silica) and Cl2 or HCl for recycle back into the reaction process. The only think I have found is SiCl4 + H2O = H2SiO4 + 4HCl. Is there a way to convert H2SiO4 to SiO2 and H2O? Any suggestions or leads would be helpful.

Thanks,

The only method that I know and is done in a laboratory is:
SiCl4 (gas) + O2 -> SiO2 (solid) + 2Cl2 (in the presence of heat)

#3 ADL

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Posted 05 October 2007 - 01:49 PM

The only method that I know and is done in a laboratory is:
SiCl4 (gas) + O2 -> SiO2 (solid) + 2Cl2 (in the presence of heat)




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