In Situ Hydrogenation and Desulfurization of CS2 by Mg-Based Hydrogen Storage Material:Products and Mechanism Analysis

Abstract

Mg-based hydrogen storage material was prepared by ball milling, and then the material was used to react with CS2. The morphology and hydrogen desorption properties of the hydrogen storage material as well as the CS2hydrogenation product were analyzed. Results show that in situ hydrogenation and desulfurization of CS2happens with the MgH2in the hydrogen storage material as hydrogen donator and desulfurizer at 300 °C and ordinary pressure, and MgS, CH4and H2S are generated from the reaction. There is a coupling relationship between dehydrogenation of the hydrogen storage material and hydrogenation of CS2. The addition of nickel and molybdenum show negative effect on the sulfur fixation capability of the Mg-based hydrogen storage material though they could decrease the dehydrogenation temperature of the material.