Magnesium-nitrogen co-doped titanium dioxide loaded palladium-indium bimetallic catalyst as well as preparation method and application thereof

The invention discloses a magnesium-nitrogen co-doped titanium dioxide loaded palladium-indium bimetallic catalyst as well as a preparation method and application thereof. The preparation method is implemented according to the following steps: (1) preparing a magnesium-nitrogen co-doped titanium dioxide precursor; (2) loading In; (3) loading Pd; (4) precipitating; (5) reduction; and (6) cooling the reduced solution to room temperature, carrying out suction filtration, washing with deionized water until the pH value of the filtrate is neutral, and finally carrying out vacuum drying on a sample to obtain a solid, namely the magnesium-nitrogen co-doped titanium dioxide loaded palladium-indium bimetallic catalyst. The invention provides application of the magnesium-nitrogen co-doped titanium dioxide loaded palladium-indium bimetallic catalyst prepared by the method in synthesis of ethylbenzene by hydrogenation reduction of styrene, synthesis of p-ethylaniline by hydrogenation reduction of p-vinyl aniline and synt