Chemical conversion process

In a process for converting a non-olefinic feedstock containing 1 to about 6 carbon atoms per molecule which includes (a) contacting said feedstock with a solid composition comprising a small pore crystalline microporous three dimensional, catalyst having the ability to promote said conversion, and matrix material at conditions effective to convert said feedstock, to produce a hydrocarbon product containing light olefins and to at least partially deactivate said solid composition;

• (b) contacting said deactivated solid composition with regeneration medium at conditions effective to at least partially regenerate said solid composition;
• and (c) repeating step (a);
• the improvement which comprises (d) conditioning said solid composition in the presence of at least one added conditioning agent, said conditioning agent being substantially incapable of entering the pores of said catalyst, prior to step (a) to provide said solid composition with increased effectiveness in step (a).

In a process for converting a feedstock containing methanol, ethanol, dimethyl ether, diethyl ether, and mixtures thereof, which includes contacting said feedstock with solid particles comprising a small pore crystalline microporous three dimensional solid catalyst having the ability to promote said conversion and matrix material, said solid particles being present in the fluidized state or in a fixed bed, at conditions effective to convert said feedstock and to produce a product containing ethylene, propylene, butenes and mixtures thereof, the improvement which comprises conducting said contacting in the presence of at least one added conditioning agent comprising a basic material in an amount effective to improve the performance of said solid particles in said contacting, said conditioning agent being substantially incapable of entering the pores of said catalyst.