京大田中研究室をはじめとするESICBでの共同研究の成果がCatalysis Science and Technology誌(RSC)にAcceptされました。Our paper reporting dynamic behavior of Pd nanoparticles by operand XAS was published in Catalysis Science and Technology (RSC).

「Real-time Observation of the Effect of Oxygen Storage Material on Pd-based Three-Way Catalysts under Ideal Automobile Exhaust Conditions: An Operando Study」Asakura, Hiroyuki; Hosokawa, Saburo; Tamai, Kazuki; Ohyama, Jun-ya; Shishido, Tetsuya; Kato, Kazuo; Teramura, Kentaro; Tanaka, Tsunehiro Catalysis Science and Technology, 2021, DOI:

The dynamic behavior of Pd species and the CeO2 support of 1 wt% Pd/Al2O3 and Pd/CeO2 catalysts during three-way catalysis was examined in real time with operando multi-probe analysis using a micro
gas chromatograph, a NOx meter, and a quadrupole mass spectrometer and time-resolved quick X-ray absorption spectroscopy (XAS) measurements. With additional ex situ NO pulse measurement, the results demonstrated the effect of oxygen storage materials under ideal automobile exhaust conditions, which can be summarized into a well-known anchoring effect of CeO2 on active metal species, an oxygen storage/release effect to maintain near stoichiometric conditions on the catalyst surface, NO reduction ability of CeO2 itself, and storage/release of carbonaceous species on/from CeO2.