Hydrogenation Reprocessing of Tire Rubber in a Mixture with Petroleum Tar in the Presence of Ultradispersed Catalysts

Abstract

Hydroconversion of tire rubber in a mixture with petroleum tar in the presence of ultradispersed catalysts formed in situ in a hydrocarbon medium from the catalyst precursor was studied. Aqueous solutions of ammonium paramolybdate, nickel nitrate, and cobalt nitrate and mixtures of these solutions were used as catalyst precursors. In hydroconversion of a mixture of rubber and tar, the ultradispersed catalysts used increase the yield of distillate products and reduce the yield of the gas and condensation products. The yield of the liquid products is maximal (64.0%) with the Mo catalyst and decreases in the order Mo, Ni, Co. Binary ultradispersed catalysts based on molybdenum and nickel compounds show high performance.