Patent ID: 7718835

Claim:
A process of producing dimethylnaphthalene comprising: dehydrogenating a dimethyltetralin isomer to produce dimethylnaphthalene in the presence of a metal catalyst for dehydrogenation, wherein the carrier of the metal catalyst is alumina (Al 2 O 3 ), silica (SiO 2 ), a silica-alumina mixture, or zeolite, and the metal catalyst also contains 0.05 to 2.5% by weight of platinum (Pt), 0.1 to 3.0% by weight of tin (Sn) or indium (In), 0.5 to 15.0% by weight of at least one selected from the group consisting of potassium (K), magnesium (Mg), and cesium (Cs), 0.3 to 3.0% by weight of chlorine, and 0.01 to 3.0% by weight of zinc (Zn) or gallium (Ga) as active components based on a weight of the resulting catalyst.