High efficiency desulfurization catalyst in natural rubber, together with sulfur yellow, can prevent vulcanization reversion, improve heat resistance, reduce heat generation, aging resistance, improve rubber and cord adhesion and vulcanization rubber modulus. It is used in the rubber of shoulder rubber and cushion layer of load tires, which can solve the problem of shoulder hollow of slant load tires, and also can be used in the large-size thick products of natural rubber and various rubber miscellaneous products.

Most of the hydrogenation reactions are exothermic, and most of them are carried out at high temperatures. The hydrogen and most of the materials used have the danger of ignition and explosion, and some of the materials, products or intermediate products are toxic and corrosive. In case of leakage, reactor blockage and other failures, there is a great risk of fire and explosion.