MAGNETIC NANOMETER SOLID BASE CATALYST AND ITS PREPARATION METHOD

摘要

The present invention relates to a magnetic nanometer solid base catalyst and its preparation method. The magnetic core of the catalyst is wrapped by solid base active component Firstly utilize the method that all return mixing-liquid membrane reactor which is based on liquid-liquid reaction, is adopted to carry out qulick nucleation reaction to prepare the nanometer magnetic core, secondly mix it with relevant salt solution, use all return mixing-liquid membrane reactor to carry out qulick nucleation reaction, then get hydrotalcite which contains magnetic core, calcining it to transfer into solid base composite oxide, the magnetic core is wrapped into composite oxide. The characteristic of the catalyst is: nanometer size and high specific area, high activity and selectivity in catalytic reaction. Since the catalyst is magnetic it can be gathered to recover and highly dispersed in reaction system by extra magnetic field. The catalyst can be use in base-catalysed organic reaction, such as alcohol ether synthesis, ester exchange, aldehyde ketone condensation etal.