The heteroatom lattice substitution method in a borosilicate zeolite pore oversized and large

摘要

The present invention provides a method for manufacturing a zeolite having lattice substituted heteroatoms. Brought into contact with an acid: (a) calcined borosilicate zeolite, thereby, the method can further include generating a zeolite is deboronation at least partially; this (b) zeolite de boron and at least partially , aluminum salt, gallium salt, and can be contacted with a salt-containing aqueous solution containing a salt of one or more selected from the group consisting of iron, thereby containing aluminum atoms, gallium atoms, or combinations thereof iron atom It includes generating a silicate or zeolite having a silicate lattice. Step (b) is performed at a pH of about 3.5 or less. Preferably, both steps (a), step (b) or at temperatures up to about 300 ℃ from about ambient temperature, preferably, under stirring / tumbling, is carried out.