超临界水气化制氢耦合金属单质及其氧化物制备的技术探索

As a very competitive hydrogen production technology, supercritical water gasification technology has important practical significance in exploring the combination route with hydrogen metallurgy under the carbon peaking and carbon neutrality goals. This paper presents a new technical route: supercritical water gasification for hydrogen production complete the reduction of metal oxide in the same reactor, simplifying the metallurgical process. The feasibility of this technology was verified from thermodynamics and experiment, and Fe₃O₄, Cu and MoO₂ powders could be rapidly reduced to prepare in supercritical water gasification atmosphere with glycerol mass concentrations of 2%, 5% and 10%. Under the mass concentration of formic acid 50%, 60% and 70%, blue tungsten oxide and violet tungsten oxide can be obtained by supercritical water gasification, and under the mass concentration of 50%, the needle structure is obvious and less agglomeration.