%0 Journal Article
%T In situ adsorption-catalysis system for the removal of o-xylene over an activated carbon supported Pd catalyst<br>
%A HUANG Shaoyong
%A ZHANG Changbin
%A HE Hong
%A <br>
%J 环境科学学报(英文版)
%D 2009
%I 
%X An activated carbon (AC) supported Pd catalyst was used to develop a highly efficient in situ adsorption-catalysis system for the removal of low concentrations of o-xylene. In this study, three kinds of Pd/AC catalysts were prepared and tested to investigate the synergistic efficiency between adsorption and catalysis for o-xylene removal. The Pd/AC catalyst was first used as an adsorbent to concentrate dilute o-xylene at low temperature. After saturated adsorption, the adsorbed o-xylene was oxidized to CO2 and H2O by raising the temperature of the catalyst bed. The results showed that more than 99% of the adsorbed o-xylene was completely oxidized to CO2 over a 5% Pd/AC catalyst at 140℃. Brunauer-Emmett-Teller (BET) analysis, scanning electron microscopy (SEM), temperature-programmed desorption (TPD), and temperature-programmed oxidation (TPO) were applied to investigate the physical properties of o-xylene adsorption-desorption and the in situ adsorption-catalysis activity of the AC support and Pd/AC catalyst. A synergistic relationship between the AC support and the active Pd species for the removal of low concentrations of o-xylene was established.
%K in situ adsorption-catalysis
%K Pd/AC
%K volatile organic compoundsAcknowledgments<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=6CB1530875F53489BF1E81BD87B7F5E6&aid=57BEA88B3A7D8C12ECC6086D74BCB162&yid=DE12191FBD62783C&vid=659D3B06EBF534A7&iid=DF92D298D3FF1E6E&sid=80B081C203919926&eid=74EAF208D0F1A3E3&journal_id=1001-0742&journal_name=Journalofenvironmentalsciences(China)&referenced_num=1&reference_num=24