In situ electrochemically controlled promotion of complete and partial oxidation catalysts

摘要: Publisher Summary In this chapter, the main features of electrochemical promotion are described with emphasis on complete and partial oxidation reactions. The origin effect is also discussed basis work function measurements, recent surface spectroscopic investigations, ab initio quantum mechanical studies. catalytic activity selectivity metal films interfaced solid electrolytes can be varied in situ a very pronounced reversible manner via electrical potential application between catalyst film counter electrode contact electrolyte. particularly for working serves simultaneously as an reaction under study. increase rate up to factor 100 higher than open-circuit 3x10 5 times larger change electrocatalytic rate. This novel has been termed “nonFaradaic modification activity” (NEMCA effect) or “electrochemical promotion” “controlled promotion.” phenomenological NEMCA reactions briefly light kinetic, spectroscopic, echanical investigations. addition explaining Na + -conducting electrolytes, chapter provided first scanning tunneling microscopy (STM) confirmation spillover/backspillover phenomena. Moreover, describes theoretical methodology investigation role promoters heterogeneous catalysis.