A kind of method of organic phosphorus compound modified zsm-5 zeolite

The present invention provides a kind of methods of organic phosphorus compound modified HZSM-5 molecular sieve, it is characterized in that being mixed with one or more of organic phosphorus compounds selected from tetrabutylammonium hydroxide phosphorus, tetrabutyl phosphonium bromide phosphorus, phosphoric acid di-n-butyl, 1- butyl phosphoric acid, three normal-butyl phosphorous oxides, tributylphosphine, phosethyl-Al, tetraphenyl phosphonium bromide, triphenyl ethyl phosphonium bromide phosphorus, triphenylbut base phosphonium bromide and triphenylbenzylphosphonium phosphonium bromide with HZSM-5 molecular sieve, mixture is through drying, roasting.The ZSM-5 molecular sieve that organic phosphorus compound method of modifying provided by the invention obtains shows higher pore volume and specific surface area and more B acid acid centres.