Process for the production of propylene oxide

A continuous process for the production of propylene oxide comprising:

• reacting propene with hydrogen peroxide in a methanolic solution in the presence of a titanium silicalite-1 catalyst to obtain propylene oxide,
• wherein a reaction feed comprising propene, methanol and hydrogen peroxide is introduced into a reactor, wherein the reaction feed comprises from 110 to 190 micromol of potassium cations (K+), relative to 1 mol hydrogen peroxide contained in the reaction feed, and
• wherein the reaction feed further comprises phosphorus (P) in the form of anions of at least one phosphorus oxyacid.