Patent ID: 9061954
Filing Date: 2015-06-23
Classification: B01J,C07C,Y02P

Abstract:
1. A process for the dehydration of an alcohol having at least 2 carbon atoms to produce a corresponding olefin comprising: forming a catalyst comprising a phosphorous modified zeolite by: selecting a zeolite with an Si/Al ratio between 4 and 30 from an H steaming the zeolite at a temperature ranging from 400 to 870° C. for 0.01 to 200 hours; leaching the zeolite at conditions effective to remove at least 10% of Al from the zeolite; introducing P at conditions effective to introduce at least 0.05 wt % of P; separating solids from liquids; and calcining; introducing a first stream into a reactor, wherein the first stream comprises an alcohol; contacting the first stream with the catalyst in the reactor at conditions effective to dehydrate at least a portion of the alcohol to produce an olefin; and recovering from the reactor a second stream comprising an olefin; wherein the reactor is operated under conditions comprising an alcohol WHSV of at least 2 h