Catalyst based on dealuminated mordenite containing at least one metal from groups VI, VII or VIII, and its use for dismutation and/or transalkylation of aromatic hydrocarbons
AssigneeInstitut Francais du Petrole
InventorsElisabeth Merlen, Fabio Alario
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Abstract
A catalyst for transforming aromatic hydrocarbons, preferably for dismutation of toluene to produce benzene and xylenes and transalkylation of toluene and aromatic compounds containing at least 9 carbon atoms per molecule to produce xylenes, contains 40% to 90% by weight of a mordenite in its acid form in a proportion of and 10% to 60% by weight of binders. The mordenite comprises less than 0.1% by weight of sodium and has a Si02/A2O3 molar ratio of over 70. The catalyst also contains at least one metal from groups VI, VII or VIII and optionally an additional metal from groups III or IV.
Claims22
A final calcined catalyst for dismutation and/or transalkylation of toluene and/or alkylaromatics containing at least 9 carbon atoms per molecule which contains:
- 40% to 90% by weight of at least one zeolite with a mordenite structure which is at least partially in its acid form, having a Si/Al molar ratio of 47.9 to 60, said mordenite containing at most 0.1% by weight (expressed with respect to zeolite) of sodium;
- a total of 0.01% to 5% weight, with respect to the zeolite, of at least one metal from the group formed by elements from groups VI, VII and VIII of the periodic table;
- 10% to 60% by weight of at least one binder.
Dependencies are inferred from the claim text.