Operando X-ray absorption spectra and mass spectrometry data during hydrogenation of ethylene over palladium nanoparticles.

We report the series of Pd -edge X-ray absorption spectra collected during hydrogenation of ethylene with variable ethylene/hydrogen ratio over carbon supported palladium nanoparticles. The data presented in this article includes normalized X-ray absorption spectra, -weighted oscillatory χ() functions extracted from the extended X-ray absorption fine structure (EXAFS) and -weighted Fourier-transformed EXAFS data, χ(). Each spectrum is reported together with the hydrogen, ethylene and helium flow rates, adjusted during its collection. In addition, time evolution of the ratio of / signals of 30 and 28 registered by online mass spectrometer is presented. The data analysis is reported in Bugaev et al., , 2019 [1].