TWO-PHASE AMMOXIMATION

摘要

The invention relates to a process for preparing oximes from ketones or aldehydes, hydrogen peroxide and ammonia, the reaction being carried out in a system of one aqueous phase and one phase of hydrocarbons inert under the reaction conditions in the presence of at least one interphase. contactor and a catalyst system which consists of at least two components, one component of the catalyst system being present in heterogeneous form and being based on titanium, silicon and oxygen and one other component being a homogeneously dissolved or suspended ammonium salt.