The invention discloses an
alkylation raw material selective hydrogenation catalyst and a preparation method thereof and belongs to the technical field of hydrogenation catalysts. The catalyst is characterized by comprising the following components in percentage by weight: 0.2%-0.3% of Pd, 1.0%-5.0% of
titanium dioxide and the balance of
sepiolite and auxiliary agents. The preparation method comprises the following steps: preparing
sepiolite, crushing, soaking, removing scum, filtering,
drying; adding meta-
titanic acid powder accounting for 4-6% of the
mass of the
sepiolite into the dried sepiolite, crushing the sepiolite and the meta-
titanic acid powder together until the particle size is smaller than 160 meshes, performing
roasting modification for 6-8 hours at the
roasting temperature of 400-500 DEG C to obtain modified sepiolite; adding the modified sepiolite, extruding into strips, airing,
roasting to obtain a catalyst carrier; preparing a PdCl2 solution, carrying out isopyknic impregnation on the PdCl2 solution and the carrier obtained in the step (3), carrying out draining, and carrying out roasting so as to obtain the finished catalyst. The selective hydrogenation catalysthas catalytic activity equivalent to that of a
noble metal catalyst, is low in cost, and also has very high 1-
butene isomerization activity.