| 摘要 |
The present invention is the use of a catalyst (i) in a MTO process to convert an alcohol or an ether into light olefins or (ii) in a dehydration process to convert an alcohol into an olefin wherein said catalyst comprises a phosphorus modified zeolite and is made by a method comprising the following steps in this order,
a) the essential portion of the phosphorus is introduced into a zeolite comprising at least one ten members ring in the structure,
b) the phosphorus modified zeolite of step a) is mixed with at least a component selected among one or more binders, salts of alkali-earth metals, salts of rare-earth metals, clays and shaping additives,
b)* making a catalyst body from mixture b),
c) an optional drying step or an optional drying step followed by a washing step,
d) a calcination step,
d*) an optional washing step followed by drying,
e) optionally a small portion of phosphorus is introduced in the course of step b) or b)* or at end of step b) or b)*. |
