Yasuaki Okamoto

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The chemical vapor deposition of Co(CO)(3)NO under controlled conditions onto MoS(2) catalysts supported on SiO(2) achieves the edge-differentiating deposition of Co between (1010) and (1010) edges of MoS(2) particles, the former edge being preferentially decorated by Co at a low Co content to form a catalytically "active" structure for hydrodesulfurization.
The elucidation of a molecular structure of the active sites (i.e., the Co-Mo-S phase) of Co-Mo hydrodesulfurization catalysts has received extensive attention. In the present study, we unambiguously determined, for the first time, the NO adsorption behavior and magnetic property of the Co-Mo-S phase by preparing unique Co-Mo/Al(2)O(3) catalysts(More)
Enlargement of digital image is a prime technique in the digital image processing field. Generally, an image enlargement is realized by linear interpolation method. However, the enlargement image by linear interpolation will appear blurred. The heavy blurred areas, those include high-frequency components, such as step-edges and peaks. In order to realize(More)
The applicability of capillary zone electrophoresis (CZE) to ions having relatively low natural occurrences in sea water is limited by method's relatively poor concentration detection sensitivity. A combination of CZE with indirect UV detection and transient isotachophoresis (tITP) pre-concentration was developed to evolve the CZE practical utility towards(More)
It is established by using Co-Mo model sulfide catalysts, XAFS and FTIR that Co atoms constituting CoMoS phases are not oxidized by NO adsorption and that only 55% of the CoMoS phases is susceptible to NO adsorption even at the maximum coordinative unsaturation attainable under usual HDS reaction conditions (623-673 K).
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