Method for Making a Catalyst Comprising a Phosphorus Modified Zeolite to be Used in an Alcohols Dehy

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A method of forming a phosphorus modified zeolite includes introducing phosphorus into a zeolite having at least one ten member ring in a structure thereof in an amount of from 0.5 to 30 weight percent, followed by a separation of solid from liquid if any. The method includes mixing the phosphorus modified zeolite with a component selected among binders, salts of alkali-earth metals, salts of rare-earth metals, and clays. The method includes making a catalyst body from the mixture by extruding the mixture into a desired shape. The method optionally includes a drying step, optionally followed by a washing step. The method includes a calcination step, optionally followed by a washing step and drying. An alcohol having at least 2 carbon atoms may be converted into a corresponding olefin in a dehydration process in the presence of the phosphorus modified zeolite.