There is described a process for the transalkylation of a polycycloalkyl aromatic compound, particularly the transalkylation of dicyclohexylbenzene to produce monocyclohexylbenzene. The process comprises contacting the polycycloalkyl aromatic compound with benzene in the presence of a catalyst selected from the group consisting of an acidic solid comprising a Group IVB metal oxide modified with an oxyanion of a Group VIBA metal oxide, TEA-mordenite, zeolite beta and a porous crystalline material having an X-ray diffraction pattern including d-spacing maxima at 12.4.+-.0.25, 6.9.+-.0.15, 3.57.+-.0.07 and 3.42.+-.0.07 Angstrom. Preferably the catalyst is a WO.sub.x /ZrO.sub.2 material.

É descrito um processo para o transalkylation de um composto aromatic do polycycloalkyl, particularmente o transalkylation do dicyclohexylbenzene ao monocyclohexylbenzene do produto. O processo compreende contatar o composto aromatic do polycycloalkyl com benzene na presença de um catalizador selecionado do grupo que consiste em um sólido acidic que compreende um óxido de metal do grupo IVB modificado com um oxyanion de um óxido de metal do grupo VIBA, do Chá-mordenite, do zeolite beta e de um material cristalino poroso que tem um teste padrão de diffraction do raio X including máximos do d-afastamento no angstrom 12.4.+-.0.25, 6.9.+-.0.15, 3.57.+-.0.07 e 3.42.+-.0.07. Preferivelmente o catalizador é um material de WO.sub.x /ZrO.sub.2.

 
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