Transient methods in heterogeneous catalysis
Transient methods in heterogeneous catalysis
Transient methods in heterogeneous catalysis are powerful tools used to investigate the dynamics and kinetics of catalytic reactions occurring on solid surfaces. These methods involve monitoring the changes in reactant concentrations, reaction intermediates, and product formation over short time intervals during a catalytic reaction. By capturing these fast transient events, researchers can gain valuable insights into the mechanisms and kinetics of surface reactions, as well as the role of different catalysts in promoting or inhibiting specific chemical transformations. Common transient techniques include temperature-programmed desorption (TPD), temperature-programmed reaction spectroscopy (TPRS), pulse response analysis, and laser-based techniques such as time-resolved infrared spectroscopy (TR-IR) and pump-probe experiments. These methods offer a detailed understanding of both adsorption and desorption processes on catalytic surfaces, allowing for the design of more efficient catalysts with enhanced activity, selectivity, and stability. Overall, transient methods play a crucial role in advancing our understanding of heterogeneous catalysis and facilitating the development of novel catalysts for various industrial applications.
Keywords
· Temporal analysis
· Isotopic exchange
· Mechanisms
· Active sites
· New methodologies for kinetic