PRODUCTION OF MONOLITHIC SEPARATING COLUMNS

摘要

The method for the production of monolithic separating columns useful for chromatographic separation of two substances as a carrier material in catalytic processes or flow synthesis or in the solid phase extraction, comprises reducing diameter of porous monolithic form bodies, which exhibit inhomogeneous boundary region. The diameter of the bodies is reduced around 20 mu m by single- or multiple grinding of the outer layer. The grind bodies are covered in liquid-tight manner. The diameter of the bodies is reduced in a nib-free grinding process and with the help of a rotating grinding wheel. The method for the production of monolithic separating columns useful for chromatographic separation of two substances as a carrier material in catalytic processes or flow synthesis or in the solid phase extraction, comprises reducing diameter of porous monolithic form bodies, which exhibit inhomogeneous boundary region. The diameter of the bodies is reduced around 20 mu m by single- or multiple grinding of the outer layer. The grind bodies are covered in liquid-tight manner. The diameter of the bodies is reduced in a nib-free grinding process and with the help of a rotating grinding wheel. The diameter of the bodies is reduced on a lathe by rotating between nibs and gradually reduced around 0.1-3 mm. The monolithic form bodies are produced by a sol-gel method and have a diameter between 4-8 mm. An independent claim is included for a monolithic separation column.