TY - JOUR
T1 - Low-cost catalysts for the control of indoor CO and PM emissions from solid fuel combustion
AU - Doggali, Pradeep
AU - Kusaba, H.
AU - Einaga, H.
AU - Bensaid, S.
AU - Rayalu, S.
AU - Teraoka, Y.
AU - Labhsetwar, Nitin
N1 - Funding Information:
This work has been carried out under the CSIR sponsored research project RSP-0032 as well as under the Research Collaboration between NEERI-CSIR and Kyushu University, Japan under the G-COE programme. Authors are grateful to Director NEERI, for providing necessary facilities, while one of the authors (Pradeep Doggali) is thankful to CSIR India for providing Senior Research Fellowship.
PY - 2011/2/15
Y1 - 2011/2/15
N2 - Cu-Mn based mixed oxide type low-cost catalysts have been prepared in supported form using mesoporous Al2O3, TiO2 and ZrO2 supports. These supports have been prepared by templating method using a natural biopolymer, chitosan. The synthesized catalysts have been characterized by XRD, BET-SA, SEM, O2-TPD and TG investigations. The catalytic activity for CO as well as PM oxidation was studied, in a view of their possible applications in the control of emissions from solid fuel combustion of rural cook-stoves. The trend observed for the catalytic activity of the synthesized catalysts for CO oxidation was ZrO2>TiO2>Al2O3 while for PM oxidation it was observed to be TiO2>ZrO2>Al2O3. The effect of CO2, SO2 and H2O on CO oxidation activity was also investigated, and despite partial deactivation, the catalysts show good CO oxidation activity. An effective regeneration treatment was attempted by heating the partially deactivated catalysts in presence of oxygen. Redox properties of TiO2 and ZrO2 and their structure appeared to be responsible for their promotional activity for CO and PM oxidation reactions. These unordered mesoporous materials could be useful for such reactions where mass transfer is more important than shape and size selectivity.
AB - Cu-Mn based mixed oxide type low-cost catalysts have been prepared in supported form using mesoporous Al2O3, TiO2 and ZrO2 supports. These supports have been prepared by templating method using a natural biopolymer, chitosan. The synthesized catalysts have been characterized by XRD, BET-SA, SEM, O2-TPD and TG investigations. The catalytic activity for CO as well as PM oxidation was studied, in a view of their possible applications in the control of emissions from solid fuel combustion of rural cook-stoves. The trend observed for the catalytic activity of the synthesized catalysts for CO oxidation was ZrO2>TiO2>Al2O3 while for PM oxidation it was observed to be TiO2>ZrO2>Al2O3. The effect of CO2, SO2 and H2O on CO oxidation activity was also investigated, and despite partial deactivation, the catalysts show good CO oxidation activity. An effective regeneration treatment was attempted by heating the partially deactivated catalysts in presence of oxygen. Redox properties of TiO2 and ZrO2 and their structure appeared to be responsible for their promotional activity for CO and PM oxidation reactions. These unordered mesoporous materials could be useful for such reactions where mass transfer is more important than shape and size selectivity.
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U2 - 10.1016/j.jhazmat.2010.11.072
DO - 10.1016/j.jhazmat.2010.11.072
M3 - Article
C2 - 21163572
AN - SCOPUS:79551541273
SN - 0304-3894
VL - 186
SP - 796
EP - 804
JO - Journal of Hazardous Materials
JF - Journal of Hazardous Materials
IS - 1
ER -