(C) 1994 Academic Press. Inc.doi:10.1006/jcat.1994.1225B. ChenJ.G. GoodwinJournal of CatalysisChen, B., Goodwin, J.G., "Characterization of Ru-Cu catalysts using H2 chemisorption at 77 K", J. Catal., Vol. 148, No. 1, 409-12 (1994)....
Reaction conditions: 10wt% D-sorbitol aqueous solution 25 g, catalyst 0.3 g, n(Ca(OH)2) = 1.7 mmol, 205 °C, 5.0 MPa H2, 2 h, 500 r/min. Note: an(WOx)/n(Ru) = 0.25. bn(WOx)/n(Ru) = 0 .50. 1,2-BD = 1,2-butanediol. ...
A key step for the HER is the desorption of H2, which can occur either through the Heyrovsky or the Tafel steps. The Tafel step is the simple desorption of H2 by the combination of two H atoms previously adsorbed on the catalyst surface, while the Heyrovsky step in alkaline environments ...
CO2 chemisorption is not very relevant for the lowest ruthenium loading catalyst (1Ru/CeO2), while for the highest ruthenium loading catalyst 5Ru/CeO2, hydrogenation is less favourable. According to H2-TPR and XPS characterization, the optimum behaviour of 3Ru/CeO2 could be related to and ...
Can [M(H)2(H2)(PXP)] pincer complexes (M=Fe, Ru, Os; X=N, O, S) serve as catalyst lead structures for NH3 synthesis from N2 and H2? The potential of pincer complexes [M(H)2(H2)(PXP)] (M=Fe, Ru, Os; X=N, O, S) to coordinate, activate, and thus catalyze the ...
The metal dispersion of the catalysts was evaluated by CO pulse chemisorption using a Micromeritics ChemiSorb 2750 pulse chemisorption system. The stoichiometry of CO chemisorption was CO/Ru = 1 23. Prior to chemisorption, was maintained at the catalyst was reduced under 300 °C under ...
distribution and the catalytic activity of Ru/AC catalyst.The influence of CA on the texture of AC and Ru/AC,Ru dispersion and catalytic activity were investigated.Transmission electron microscopy (TEM),thermogravimetric analysis (TGA),CO pulse chemisorption and N 2physisorption indicated that minor ...
significantlyenhanced.Temperature·dependentactivityshowedhysteresisoverthecatalystsindi— cotingthatCWAOofmethylaminefollowedachemisorptionmechanism. @2014,DalianInstituteofChemicalPhysics,ChineseAcademyofSciences. PublishedbyElsevierB.V.Allrightsreserved. Thereleaseoflargeamountsofwastewatercontainingor— ...
Nanosheet g-C3N4-H2 was derived from thermal exfoliation of bulk g-C3N4 under hydrogen atmosphere, then a green catalyst with ultrafine Ru species supported on the nanosheet g-C3N4-H2 was prepared by facile ultrasonic assisted impregnation-deposition method and the Ru/g-C3N4-H2 catalyst displayed ...
Micrometrics AutoChem II Chemisorption Analyser (Micrometrics, Norcross, GA, USA) was used for temperature programmed reduction with hydrogen (H2-TPR) to observe the reduction properties of the catalyst, while temperature programmed desorption of carbon monoxide (CO–TPD) was used to determine the con...