Liquid-phase and zeolite-based catalytic processes were developed by CDTech
(Pohl and Ram, 2005; Sy et al., 1993), Mobil-Badger, and UOP (Hwang and Chen,
2010). This catalyst is regenerable, and transalkylation reactions also occur over this
catalyst. Among different the zeolite-based processes, the technology developed
by CDTech uses reactive distillation, while the others use two fixed-bed reactors
for performing alkylation and transalkylation reactions.