METHOD FOR PREPARING MONOOLEFIN BY MEANS OF HYDROGENATION OF DIOLEFIN

Disclosed is a method for preparing a monoolefin by means of the hydrogenation of a diolefin. The method comprises the step of reacting a raw material containing a diolefin with hydrogen in the presence of a catalyst, wherein the catalyst includes a carrier comprising a first carrier and a second carrier covering the outside surface of the first carrier, and a catalytic active component loaded on the second carrier, in which the first carrier has a porosity of ≤35%, the ratio of the thickness of the second carrier to the effective diameter of the first carrier is between 0.01-0.2, the pore distribution curve of the second carrier has two pore distribution peaks, the pore size corresponding to the peak value of a first pore distribution peak is in the range of 4-80 nm, and the pore size corresponding to the peak value of a second pore distribution peak is in the range of 100-8000 nm. The method has an improved conversion rate and selectivity for a hydrogenation reaction. L'invention concerne un procédé pour la