Method for making a catalyst comprising a phosphorus modified zeolite to be used in an alcohols dehydration process

A method for making a catalyst comprising the following steps in this order:

• a) introducing phosphorus into a zeolite comprising at least one ten member ring in a structure thereof,
• b) mixing the phosphorus modified zeolite of step a) 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 the mixture of step 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,
• wherein all phosphorus in the zeolite is introduced in step a), and wherein the zeolite has a silicon to aluminum ratio, prior to introduction of the phosphorus, that is below 20.

A method comprising:

• introducing phosphorus into a zeolite comprising at least one ten member ring in a structure thereof to form a phosphorus modified zeolite, wherein the zeolite has a silicon to aluminum ratio, prior to introduction of the phosphorus, that is below 20, and wherein the zeolite structure is selected from MFI, MTT, FER, MEL, TON, MWW, EUO, MFS, and ZSM-48;
• mixing the phosphorus modified zeolite 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 to form a mixture;
• making a catalyst body from the mixture;
• calcining the catalyst body to form a catalyst;
• and
• converting an alcohol having at least 2 carbon atoms into a corresponding olefin in a dehydration process, wherein conversion of the alcohol is performed in the presence of the catalyst;
• wherein all phosphorus in the zeolite is introduced prior to introduction of any binder, salt of alkali-earth metal, salt of rare-earth metal, clay or shaping additive to the zeolite.