Chromatographic separations using a unique silica polymorph
AssigneeUnion Carbide Corporation
InventorsThomas P. J. Izod, Jack A. Duisman
Life of this patent
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Abstract
Chromatographic separation of mixtures containing low molecular weight alcohols, ethylene glycol, phenol and water are made in the liquid and gas phase using as a column packing a unique crystalline silica polymorph, synthesized hydrothermally from a reaction system containing silica, water, an alkylonium base and fluoride anions.
Claims8
A process for the chromatograpic separation of mixtures of compounds having a hydroxyl functional group, said mixtures containing,
- (a) two or more members of the group consisting of ethylene glycol, methanol, ethanol, 2-propanol, 1-propanol and water or
- (b) phenol and water, which comprises passing said mixtures over a fixed bed of F-silicalite.
A method of chromatographically separating a fluid sample mixture which comprises intermittently injecting said fluid sample mixture into a carrier fluid and passing said carrier fluid through a chromatographic separating column containing a fixed bed of F-silicalite;
- said sample fluid mixture containing two or more members of the group consisting of ethylene glycol, methanol, ethanol, 2-propanol, 1-propanol and water.
A method of chromatographically separating a fluid sample mixture which comprises intermittently injecting said fluid sample mixture into a carrier fluid and passing said carrier fluid through a chromatographic separation column containing a fixed bed of F-silicalite;
- said sample fluid mixture containing phenol and water.
Dependencies are inferred from the claim text.