%0 Journal Article
%T Active site of praseodymium orthovanadate catalyst in oxidative dehydrogenation of propane<br>
%A Weide Zhang
%A Chaktong Au
%A Huilin Wan
%A <br>
%J 科学通报(英文版)
%D 1998
%I 
%X The pure phase of praseodymium orthovanadate (PrVO4) has been prepared by the citrate method. The active site of Pr-VO4 was studied by ESR, NO-TPD, O2-TPD and18O2-isotope exchange methods. The results of ESR and NO-TPD confirmed the presence of V4+ in the catalyst.18O2-isotope exchange was through a single exchange procedure. From the result of O2 + TPD and the kinetic study of18O2-isotope exchange, one can reach a conclusion that the V4+ species associated with oxygen vacancies are the site for O2 activation. The adsorbed O2 or O  are the active oxygen species in propane oxidative dehydrogenation.
%K praseodymium orthovanadate
%K active site
%K propane oxidative dehydrogenation
%K catalyst<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=01BA20E8BA813E1908F3698710BBFEFEE816345F465FEBA5&cid=96E6E851B5104576C2DD9FC1FBCB69EF&jid=DD6615BC9D2CFCE0B6F945E8D5314523&aid=3FB994A4095B5F628F728B797B31F1BA&yid=8CAA3A429E3EA654&vid=BE33CC7147FEFCA4&iid=38B194292C032A66&sid=F9F74EC1AA08A7B9&eid=F9F74EC1AA08A7B9&journal_id=1001-6538&journal_name=科学通报(英文版)&referenced_num=0&reference_num=8