Zeolite catalysts modified with group IIIA metal

Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By condensation of entire molecules or entire hydrocarbyl...

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585467, 585470, 585474, 585475, C07C 268, C07C 522, C07C 552

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043742947

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.

REFERENCES:
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patent: 3944626 (1976-03-01), Honna et al.
patent: 4128504 (1978-12-01), Plank et al.
patent: 4157293 (1979-06-01), Plank et al.
patent: 4302622 (1981-11-01), Chu

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