A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a sulfated metal oxide; and B) a mobile acid component selected from the group consisting of chlorosulfonic acid, fluorosulfonic acid, a fluorinated monosulfonic acid, a fluorinated sulfonimide, a fluorinated disulfonic acid, and an adjunct acid mixture is disclosed.

Un catalizador que abarcaba A) un componente ácido inmóvil seleccionó del grupo que consistía en un polímero perfluorinated del intercambio de ion en una ayuda inerte, un ácido perfluorosulfonic modificado silane, y un óxido de metal sulfatado; y B) un componente ácido móvil seleccionado del grupo que consiste en el ácido chlorosulfonic, el ácido fluorosulfonic, un ácido monosulfonic fluorado, un sulfonimide fluorado, un ácido disulfonic fluorado, y una mezcla ácida del adjunto se divulga.

 
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