SELECTIVE PRODUCTION OF META-DIISOPROPYLBENZENE
In a process for the selective production of meta-diisopropylbenzene, a C9+ aromatic hydrocarbon feedstock containing meta- and ortho-diisopropylbenzene is contacted with benzene under conversion conditions with a catalyst comprising a molecular sieve selected from the group consisting of zeolite be...
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Zusammenfassung: | In a process for the selective production of meta-diisopropylbenzene, a C9+ aromatic hydrocarbon feedstock containing meta- and ortho-diisopropylbenzene is contacted with benzene under conversion conditions with a catalyst comprising a molecular sieve selected from the group consisting of zeolite beta, mordenite and a porous crystalline inorganic oxide material having an X-ray diffraction pattern including the d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstrom. The contacting step selectively converts ortho-diisopropylbenzene in the feedstock to produce an effluent in which the ratio of meta-diisopropylbenzene to ortho-diisopropylbenzene is greater than that of the feedstock. The effluent is the fed to a separation zone for recovery of a product rich in meta-diisopropylbenzene.
L'invention concerne un procédé de production sélective de méta-diisopropylbenzène, au cours duquel on met en contact une charge C9+ d'hydrocarbure aromatique contenant méta- et ortho-diisopropylbenzène avec du benzène en conditions de transformation avec un catalyseur comportant un tamis moléculaire choisi dans le groupe formé de zéolite bêta, de mordénite et d'un matériau d'oxyde inorganique cristallin poreux ayant un diagramme de diffraction de rayons X correspondant à un maximum d à 12,4 |
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