China at present commands a total production capacity of 1.46 million tons of methanol-to-propylene production equipment, but process performance is poor. In a national program implemented in 2011, considerable progress was achieved: a largely improved catalyst could be continuously used for more than 1000 hours, the overall methanol conversion rate was higher than 99%, selectivity for C3 was 45%, for C2  9%~13%, for C7 and heavy hydrocarbons less than 3%, and performance was stable after regeneration.

CAS news release, December 25, 2018