Process for the isomerization of a hydrocarbonaceous feedstock

Chemistry of hydrocarbon compounds – Unsaturated compound synthesis – By skeletal isomerization

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502208, 502214, C07C 523

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054930669

ABSTRACT:
Process for the preparation of branched olefins comprising contacting a hydrocarbonaceous feedstock comprising linear olefins having at least four carbon atoms at elevated temperature with a catalyst which comprises a MeAPO and/or MeAPSO medium-pore molecular sieve having an anhydrous composition expressed in molar oxide ratios as follows; (MeO).sub.a (Al.sub.2 O.sub.3).sub.b (P.sub.2 O.sub.5).sub.c (SiO.sub.2).sub.d, whereby (a+b)/c is greater than 1.0, a ranges from 0.003 to 0.2, b and c range from 0.05 to 0.3, d is at most 0.4 and a/(c+d) is at least 0.05 when SiO.sub.2 is present, and Me is at least one of Mg, Mn, Co and Zn.

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"Skeletal Rearrangement Reactions of Olefins, Paraffins, and Aromatics over Aluminophosphate-Based Molecular Sieve Catalysts," by R. J. Pellet, P. K. Coughlin, E. S. Shamshoum, and J. A. Rabo, Perspectives in Molecular Sieve Science, Americam Chemical Society, Washington, DC 1988, pp. 512-531.
European Search Report, Sep. 19, 1994.

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