Catalytic conversion of alcohols and/or ethers to olefins

A process for converting alcohols and/or ethers to olefins, said process comprising:

• contacting a feed comprising one or more alcohols and/or one or more ethers with a conversion catalyst in a reaction zone at a temperature from about 200° C. to about 550° C. under conditions effective to produce an olefin-containing effluent, the olefin-containing effluent comprising 5 wt.% or more of C3+ olefins, 40 wt.% or more of olefins and 30 wt.% or less of aromatics relative to a weight of hydrocarbons in the olefin-containing effluent, the conversion catalyst comprising a zeolite selected from at least one of MRE or ZSM-48, wherein the zeolite comprises 0.1 to 2 wt.% Zn.