The invention is directed to a method for modifying a microporous metalloaluminophosphate
molecular sieve, the method comprising the steps of a) introducing a compound containing
at least one M-X group within the cages of said microporous molecular sieve; and
b) reacting said compound containing at least one M-X group with the acid groups
located in the cages of the molecular sieve, wherein the compound containing at
least one M-X group is selected from the group consisting of compounds of formula
MX3, compounds of formula M2X6, and mixtures thereof,
M being a metal belonging to Group 13 of the Periodic Table, and each X independently
being a hydrogen or halogen atom. Preferably, X is a hydrogen atom. The present
invention also relates to modified metalloaluminophosphate molecular sieves, preferably
modified silicoaluminophosphate molecular sieves, as well as to the use of these
modified molecular sieves in catalytic processes, such as processes for the conversion
of oxygenated hydrocarbon feedstocks.
