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<p class="MsoTitle" style="margin:0cm;margin-bottom:.0001pt"><span style="font-size:18.0pt;font-family:"Verdana","sans-serif";color:black;font-weight:normal">VABILO NA PREDAVANJE / INVITATION TO THE LECTURE<o:p></o:p></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:8.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:20.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span style="font-size:20.0pt;font-family:"Verdana","sans-serif"">Prof. Dr. Sena Yaºyerli<o:p></o:p></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><span style="font-family:"Verdana","sans-serif"">Gazi University, Department of Chemical Engineering, Ankara, Turkey</span><span lang="FR" style="font-family:"Verdana","sans-serif";mso-fareast-language:FR"><o:p></o:p></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span style="font-family:"Verdana","sans-serif""><a href="mailto:syasyerli@gazi.edu.tr">syasyerli@gazi.edu.tr</a><o:p></o:p></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="Default" align="center" style="text-align:center"><b><span style="font-size:16.0pt"><o:p> </o:p></span></b></p>
<p class="Default" align="center" style="text-align:center"><b><span style="font-size:16.0pt">Èetrtek / Thursday, 11. 7. 2013, ob / at 13:00<o:p></o:p></span></b></p>
<p class="MsoNormal" align="center" style="margin-bottom:6.0pt;text-align:center">
<b><span style="font-size:16.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></b></p>
<h6 style="mso-margin-top-alt:0cm;margin-right:0cm;margin-bottom:6.0pt;margin-left:0cm">
<span lang="FR" style="font-size:12.0pt;font-family:"Verdana","sans-serif"">Velika predavalnica Kemijskega in¹tituta / Lecture Hall at the National Institute of Chemistry, Hajdrihova 19, Ljubljana<o:p></o:p></span></h6>
<p class="MsoNormal" align="center" style="text-align:center"><b><span lang="EN-GB" style="font-size:16.0pt;font-family:"Verdana","sans-serif";color:#993366"><o:p> </o:p></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span lang="EN-US" style="font-size:18.0pt;font-family:"Verdana","sans-serif";color:#CC0066;text-transform:uppercase">High Temperature</span></b><b><span lang="EN-US" style="font-size:18.0pt;font-family:"Verdana","sans-serif";color:#CC0066">
H<sub>2</sub>S <span style="text-transform:uppercase">Removal and Selective Catalytic Oxidation of
</span>H<sub>2</sub>S<o:p></o:p></span></b></p>
<p class="MsoNormal" align="center" style="text-align:center"><b><span lang="EN-US" style="font-size:18.0pt;color:#CC0066"><o:p> </o:p></span></b></p>
<p class="MsoNormal"><span lang="FR" style="font-size:10.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-align:justify;text-indent:35.45pt"><span style="font-family:"Verdana","sans-serif"">Due to its toxic and corrosive nature, H<sub>2</sub>S should be safely removed from the gases produced in gasification or combustion processes.
In our previous studies, a number of metal or mixed metal oxides (Cu, V, Mo, Mn, Fe, Ce) were investigated for high temperature removal of H<sub>2</sub>S as sorbent and selective oxidation of H<sub>2</sub>S as catalyst. These sorbents were synthesized by the
complexation method. Characterization results showed that mixed metal oxides such as Cu<sub>2</sub>V<sub>2</sub>O<sub>7</sub>, CuMoO<sub>4</sub>, CeVO<sub>4</sub> can be obtained in a highly porous structure with a moderate BET surface area. Reaction mechanisms
proposed were tested by using the concentrations versus time data of H<sub>2</sub>S, SO<sub>2</sub> and H<sub>2</sub>O in the effluent stream of the fixed-bed reactor. The deactivation model developed was applied to predict sorption rate parameters. Among
the mixed oxides studied in our group, Mn-Ce and Mn-Cu mixed oxide sorbents showed higher reactivity, higher retention capacity and good regenerability properties. In addition to these mixed metal oxides, mesoporous supported (copper incorporated MCM-41) sorbents
were developed and used for H<sub>2</sub>S sorption. All Cu-based, Ce-based and Fe-based mixed oxide catalysts gave high activity and selectivity for H<sub>2</sub>S oxidation. Oxidation state of active metal in catalyst structure has a crucial effect on selective
oxidation of elemental sulfur. Incorporation of ceria into Fe based catalyst significantly improved the redox ability of the catalyst.<o:p></o:p></span></p>
<p class="MsoNormal" style="text-align:justify;text-indent:35.4pt"><span style="font-family:"Verdana","sans-serif"">In this presentation, a review of our studies on high temperature H<sub>2</sub>S removal and selective catalytic oxidation of H<sub>2</sub>S
to elemental sulfur will be given.<o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:150%"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" style="line-height:150%"><span style="font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-GB" style="font-size:9.0pt;font-family:"Verdana","sans-serif";color:#993366"><o:p> </o:p></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-GB" style="font-size:14.0pt;font-family:"Verdana","sans-serif"">Vljudno vabljeni! / Kindly invited!<o:p></o:p></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-GB" style="font-size:14.0pt;font-family:"Verdana","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span style="font-family:"Verdana","sans-serif"">info: prof. dr. Albin Pintar,
<a href="mailto:albin.pintar@ki.si">albin.pintar@ki.si</a><span style="color:blue"><o:p></o:p></span></span></p>
<p class="MsoNormal" align="center" style="text-align:center"><span lang="EN-US" style="font-family:"Arial","sans-serif""><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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