vízgáznemváltás

Vízgáznemváltás is a Hungarian term that translates to "water gas shift reaction." It is a reversible chemical process that involves the reaction of carbon monoxide with steam to produce carbon dioxide and hydrogen gas. The balanced chemical equation for the reaction is CO + H2O <=> CO2 + H2. This reaction is typically carried out at elevated temperatures, usually between 300 and 700 degrees Celsius, and often in the presence of a catalyst such as iron oxide or copper oxide.

The water gas shift reaction is of significant industrial importance. It is a key step in many processes, including the production of hydrogen for ammonia synthesis and methanol production. In these applications, the reaction is used to increase the yield of hydrogen from synthesis gas, which is a mixture of carbon monoxide and hydrogen produced from the gasification of coal or natural gas. By shifting the equilibrium towards the products, more hydrogen can be obtained. The reaction can also be used in reverse, as the "reverse water gas shift reaction," to produce carbon monoxide from carbon dioxide and hydrogen, although this is less common. Understanding the thermodynamics and kinetics of the water gas shift reaction is crucial for optimizing the efficiency of these industrial processes.