caa a22 4500 46788885X CHVBK 20180406152742.0 cr unu---uuuuu 170328e20061001xx s 000 0 eng 10.1007/s11144-006-0081-8 doi (NATIONALLICENCE)springer-10.1007/s11144-006-0081-8 Tmperature programmed techniques study on the nature of the oxidant in/on V 2 O 5 catalyst [Elektronische Daten] [Yun Hin Taufiq-Yap, Kenneth C. Waugh] Summary: The nature of the oxidising species in/on a vanadium pentoxide (V2O5) catalyst has been studied using a combination of transient techniques: (i) Temperature programmed desorption (TPD), (ii) Temperature programmed reduction (TPR), (iii) Temperature programmed oxidation (TPO) and (iv) Temperature programmed reaction (TPRn). Chemisorbed oxygen was found not to exist on a fully oxidised V2O5 catalyst by TPD. The TPR in CO over V2O5 catalyst gave three peak maxima at 930, 982 and 1043 K, indicating that three types of kinetically different oxygen states exist in/on the catalyst. Reoxidation of the CO reduced V2O5 catalyst by N2O resulted in the quantitative replacement of the lattice oxygen. A further reduction of the N2O reoxidised catalyst gave a significantly different TPR profile compared to the original material suggesting that a less crystalline material had formed. The presence of phosphorus in (VO)2P2O7 was found to labilise the lattice oxygen. Springer-Verlag/Akadémiai Kiadó, 2006 Taufiq-Yap Yun Hin Department of Chemistry, Universiti Putra Malaysia,, 43400 UPM Serdang, Malaysia aut Waugh Kenneth C. Department of Chemistry, University of Manchester,, PO Box 88, Manchester M60 1QD, United Kingdom aut Reaction Kinetics and Catalysis Letters Kluwer Academic Publishers 89/1(2006-10-01), 9-19 0133-1736 89:1<9 2006 89 11144 https://doi.org/10.1007/s11144-006-0081-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11144-006-0081-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Taufiq-Yap Yun Hin Department of Chemistry, Universiti Putra Malaysia,, 43400 UPM Serdang, Malaysia aut NATIONALLICENCE 700 1- Waugh Kenneth C. Department of Chemistry, University of Manchester,, PO Box 88, Manchester M60 1QD, United Kingdom aut NATIONALLICENCE 773 0- Reaction Kinetics and Catalysis Letters Kluwer Academic Publishers 89/1(2006-10-01), 9-19 0133-1736 89:1<9 2006 89 11144 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer