Phosphorus-doped carbon-coated noble metal liquid-phase hydrogenation catalyst as well as preparation method and application thereof

The invention discloses a phosphorus-doped carbon-coated noble metal liquid-phase hydrogenation catalyst as well as a preparation method and application thereof. According to the phosphorus-doped carbon-coated noble metal liquid-phase hydrogenation catalyst provided by the invention, under the combined action of relatively good dispersibility of the phosphorus-doped carbon coating layer and the noble metal particles, the sulfur poisoning resistance and the stability of the catalyst are remarkably improved on the premise of ensuring the activity of the noble metal catalyst, so that the service life of the catalyst is prolonged. The invention provides application of the phosphorus-doped carbon-coated noble metal liquid-phase hydrogenation catalyst in catalytic hydrogenation of o-chloronitrobenzene, and the phosphorus-doped carbon-coated noble metal liquid-phase hydrogenation catalyst can inhibit the dechlorination phenomenon of o-chloronitrobenzene, reduce the content of byproducts and improve the selectivity o