In-situ photoelectron spectroscopy with online activity measurement for catalysis research

We report Ambient pressure X-ray Photoelectron Spectroscopy Endstation with an integrated chemical analytical system that consists of a residual gas analyzer in the 2nd differential pumping stage and a new low-reactive sample holder heating assembly. This system has a linear response to the reaction chamber gas pressure. The sample heating assembly also has a low dark reaction rate up to 400 °C for H2 and CO oxidation. We expect this chemical analytical system will expand our capabilities in conducting in-operando catalysis research.

► We report AP-XPS system with an integrated chemical analytical system.
► We tested this system for CO oxidation and H2 oxidation experiments.
► This system expands AP-XPS capabilities in conducting catalysis research.