Zeolite catalysts modified with group IIIA metal
AssigneeMobil Oil Corporation
InventorChin-Chiun Chu
Life of this patent
Estimating the term…
Abstract
A zeolite catalyst composition suitable for para-selective conversion of substituted aromatic compounds, e.g., conversion of aromatic compounds to dialkylbenzene compounds rich in the 1,4-dialkylbenzene isomer. Such a composition comprises a zeolite catalyst component having a silica to alumina mole ratio of at least 12 and a constraint index of about 1 to 12, and a minor amount, e.g., at least 0.5 weight percent of a Group IIIA element, e.g., scandium, yttrium or Rare Earth elements, and optionally phosphorus, said elements being present in the form of their oxides.
Claims15
A catalyst composition suitable for para-selective conversion of substituted aromatic compounds, said composition comprising a modified crystalline zeolite catalyst component characterized by a silica to alumina mole ratio of at least 12 and a constraint index within the approximate range of 1 to 12, said composition further having incorporated thereon at least 0.5 weight percent of at least one element of Group IIIA of the Periodic Chart, said element being in its oxide form when combined with said catalyst composition.
Dependencies are inferred from the claim text.