84 research outputs found
Novel zwitterionic oxorhenium(V) complexes: synthesis, characterization and crystal structure of [ReOX2(Hdhp)(PPh3)] (X = Cl, Br; H2dhp = 2,3-dihydroxypyridine)
Full text linkIs No News (Perceived as) Bad News? An Experimental Investigation of Information Disclosure
Full text linkPreparation and Characterization of SBA-15 Supported Cobalt–Molybdenum Sulfide Catalysts for HDS Reaction: An All Sulfide Route to Hydrodesulfurization Catalysts
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Zur experimentellen Chemotherapie der Isonicotinsäurehydrazid (INH)-resistenten Tuberkulose
No full textSulfided Supported Tungsten and Molybdenum Catalysts Promoted by Nickel or Cobalt. An ESR Study
No full textThe ESR signals related with the sulfide phase present in W(Mo)/SiO2(y-Al2O3) are found to disappear as reasult of nickel or cobalt introduction. Consequently Ni(Co)-W(Mo)/SiO2(y-Al2O3) catalysts showed less complex ESR spectra in wich only two different ESR signals could be analyzed. This 'promotor' effect is discussed in terms of surface reorganization due to the incorporation od NI2+(Co2+)ions in the WS2(MoS2)phase.
Absorption of carbonmonoxide is found to affect the ESR spectra of W/SiO2 and Ni-W/SiO2 in different ways, indicating that nickel influences the absorptive and electronic properties of the catalyst. The effects of CO absorption can be explained by means of electron transfer from CO to the catalyst
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