Takushi Yokoyama

TL;DR: In this paper, the effect of Na on the size of Co nanoparticles, reduction of Co(II) to Co(0), and increase in surface basicity was investigated.

TL;DR: A flow system using ion-exclusion chromatography and continuous hydride/atomic absorption spectrometry was developed for the simultaneous determination of arsenious acid (As(III)) and arsenic acid(As(V)) in geothermal water at the ppm level.

TL;DR: In this article, a relationship between chemical compositions of geothermal waters and siliceous deposits was investigated, and the results indicated that iron and aluminium were concentrated into these silicerous deposits.

TL;DR: Transmission electron microscopy and X-ray absorption fine structure measurements revealed that the size of the Pd particles decreased with an increase in the specific surface area of ZrO2, suggesting that zero-valent small Pd clusters consisting of more than one Pd atom are the active species for the decarbonylation reaction.

TL;DR: The formation of aluminum hydroxide particles smaller than 0.2 microm with positive charges, consisting of 6-coordinate aluminum, and their subsequent adsorption on the surface of the solid are the most important factors contributing to the formation of silica scales.