The invention discloses a synthetic method for a
phosphorus-containing ZSM-5
molecular sieve. The method comprises the following steps: mixing a first organic template with an aluminum source, wherein in the obtained mixture, a mol ratio of the first organic template to Al2O3 in the aluminum source is 0.2-40: 1; treating the mixture in an enclosed reaction vessel at a temperature of 50 to 190 DEG C for 0.1 to 5 h and then carrying out cooling so as to obtain an
intermediate product; and uniformly mixing the
intermediate product with a second organic template, a
silicon source and water and carrying out hydrothermal
crystallization so as to obtain the
phosphorus-containing ZSM-5
molecular sieve; wherein the aluminum source is an
aluminum phosphate molecular sieve and / or
silicon-
phosphorus-aluminum molecular
sieve. The method adopts a synthetic process
route different from that in the prior art, abandons usage of high-cost silica-
alumina gel as the
silicon source and the aluminum source and can directly prepare the phosphorus-containing ZSM-5 molecular
sieve, so synthesis cost is reduced.