English to French Tech/Engineering Construction / Civil Engineering utilisation de produits d

Process to make ethylene and propylene, in a combined XTO-OC process, from an oxygen-containing organic feedstock being methanol, dimethylether or mixture thereof comprising:
a)
providing a first portion and a second portion of said oxygen-containing organic feedstock
providing a catalyst comprising zeolitic molecular sieves containing a 10 membered ring pore openings in their microporous structure,