The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Hui-chi Chiu - One of the best experts on this subject based on the ideXlab platform.
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Low temperature Complete Combustion of methane over titania-modified alumina-supported palladium ☆
Fuel, 2002Co-Authors: Chen-bin Wang, Hung-kuan Lin, Hui-chi ChiuAbstract:Abstract Effects of titania on the catalytic property of Pd/Al 2 O 3 towards methane Combustion were examined. The results revealed that the catalytic activity of the Pd/Al 2 O 3 catalyst was considerably improved by pre-coating the alumina support with titania at low temperature (below 700 °C). Hydrogen chemisorption and BET measurements revealed that the titania-modified alumina supports could modify the support characterization to achieve a high dispersion of palladium. Temperature-programmed reduction and temperature-programmed desorption study further demonstrated that the coating of Pd/Al 2 O 3 catalysts with titania can weaken the bond strength of Pd–O and enhance their catalytic activity towards methane Combustion at lower temperature.
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low temperature Complete Combustion of methane over titania modified alumina supported palladium
Fuel, 2002Co-Authors: Chen-bin Wang, Hung-kuan Lin, Hui-chi ChiuAbstract:Abstract Effects of titania on the catalytic property of Pd/Al 2 O 3 towards methane Combustion were examined. The results revealed that the catalytic activity of the Pd/Al 2 O 3 catalyst was considerably improved by pre-coating the alumina support with titania at low temperature (below 700 °C). Hydrogen chemisorption and BET measurements revealed that the titania-modified alumina supports could modify the support characterization to achieve a high dispersion of palladium. Temperature-programmed reduction and temperature-programmed desorption study further demonstrated that the coating of Pd/Al 2 O 3 catalysts with titania can weaken the bond strength of Pd–O and enhance their catalytic activity towards methane Combustion at lower temperature.
S.g. Pataskar - One of the best experts on this subject based on the ideXlab platform.
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Low-Temperature Complete Combustion of a Dilute Mixture of Methane and Propane over Transition-Metal-Doped ZrO2 Catalysts: Effect of the Presence of Propane on Methane Combustion
Environmental Science & Technology, 2005Co-Authors: V R Choudhary, G.m Deshmukh, S.g. PataskarAbstract:Complete Combustion of dilute methane alone or a dilute mixture of methane and propane over transition-metal (viz. Mn, Co, Cr, Fe, and Ni)-doped ZrO2 (cubic) catalysts at different temperatures (523−873 K) and a space velocity of 51 000 cm3·g-1·h-1 has been investigated for controlling methane and propane emissions from exhaust gases. The catalysts are compared for their catalytic ignition temperature and activity in the Combustion of propane and methane in the presence of each other. The methane Combustion activity of all the catalysts is strongly influenced by the presence of propane; it is decreased markedly. In the Combustion of mixed methane and propane the Mn-doped ZrO2 and Cr-doped ZrO2 catalysts show the highest activity in the Combustion of methane and propane, respectively; the Ni-doped ZrO2 shows the lowest activity in both cases. In the Combustion of mixed methane and propane the propane Combustion is enhanced but the methane Combustion retarded when the Cr-doped ZrO2 and Mn-doped ZrO2 catalys...
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Low temperature Complete Combustion of dilute toluene and methyl ethyl ketone over transition metal-doped ZrO2 (cubic) catalysts
Catalysis Communications, 2004Co-Authors: V R Choudhary, G.m Deshmukh, S.g. PataskarAbstract:Abstract Complete Combustion of dilute toluene (0.3 mol% toluene in air) and methyl ethyl ketone (0.4 mol% MEK in air) over transition metal (viz. Mn, Co, Cr, Fe and Ni)-doped ZrO2 (cubic) catalysts at different temperatures (470–750 K) and space velocity of 51 dm3 g−1 h−1 have been investigated for controlling the toluene and methyl ethyl ketone (MEK) emissions. The catalysts are compared for their catalytic ignition temperature and activity in the Combustion of toluene and MEK. The Co-doped ZrO2 and Cr-doped ZrO2 are highly promising catalysts for the Combustion of toluene and MEK, respectively.
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Low temperature Complete Combustion of methane over Ag-doped LaFeO3 and LaFe0.5Co0.5O3 perovskite oxide catalysts
Fuel, 1999Co-Authors: Vasant R. Choudhary, Balu S. Uphade, S.g. PataskarAbstract:Partial substitution of La by Ag, instead of Sr, in LaFeO 3 and LaFe 0.5 Co 0.5 O 3 perovskite oxides causes large increase in the catalytic activity of the perovskite in the Complete Combustion of dilute methane for its emission control, at low temperature (below 700°C) and high space velocity (51 000 cm 3 g -1 h -1 ). Ag-doped LaFe 0.5 Co 0.5 O 3 shows the highest methane Combustion activity.
V R Choudhary - One of the best experts on this subject based on the ideXlab platform.
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Low-Temperature Complete Combustion of a Dilute Mixture of Methane and Propane over Transition-Metal-Doped ZrO2 Catalysts: Effect of the Presence of Propane on Methane Combustion
Environmental Science & Technology, 2005Co-Authors: V R Choudhary, G.m Deshmukh, S.g. PataskarAbstract:Complete Combustion of dilute methane alone or a dilute mixture of methane and propane over transition-metal (viz. Mn, Co, Cr, Fe, and Ni)-doped ZrO2 (cubic) catalysts at different temperatures (523−873 K) and a space velocity of 51 000 cm3·g-1·h-1 has been investigated for controlling methane and propane emissions from exhaust gases. The catalysts are compared for their catalytic ignition temperature and activity in the Combustion of propane and methane in the presence of each other. The methane Combustion activity of all the catalysts is strongly influenced by the presence of propane; it is decreased markedly. In the Combustion of mixed methane and propane the Mn-doped ZrO2 and Cr-doped ZrO2 catalysts show the highest activity in the Combustion of methane and propane, respectively; the Ni-doped ZrO2 shows the lowest activity in both cases. In the Combustion of mixed methane and propane the propane Combustion is enhanced but the methane Combustion retarded when the Cr-doped ZrO2 and Mn-doped ZrO2 catalys...
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Kinetics of the Complete Combustion of dilute propane and methyl ethyl ketone over Cr-doped ZrO2 catalyst
Chemical Engineering Science, 2005Co-Authors: V R Choudhary, G.m DeshmukhAbstract:Abstract The kinetics of the Complete Combustion of propane and methyl ethyl ketone (MEK) at very low concentration in air (0.45 and 0.4 mol% in air, respectively) over Cr-doped ZrO 2 (cubic) catalyst ( Cr / Zr = 0.25 ) at different temperatures (485–673 K) in the kinetic control regime have been investigated. The Combustion rate data could be fitted well to both the power law and redox (Mars–Van Krevelen) models. From the power law model, the apparent activation energy for the Combustion of propane and MEK has been found to be 16.5 and 13.2 kcal mol - 1 , respectively. Among the two models, the redox one, however, gave a better fit to the kinetic data for both the Combustion of propane and MEK.
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Kinetics of the Complete Combustion of dilute propane and MEK over Cr-doped ZrO 2 catalyst
2005Co-Authors: V R Choudhary, G.m DeshmukhAbstract:The kinetics of the Complete Combustion of propane and methyl ethyl ketone (MEK) at very low concentration in air (0.45 and 0.4 mol% in air, respectively) over Cr-doped ZrO 2 (cubic) catalyst (Cr/Zr=0.25) at different temperatures (485-673 K) in the kinetic control regime have been investigated. The Combustion rate data could be fitted well to both the power law and redox (Mars-Van Krevelen) models. From the power law model, the apparent activation energy for the Combustion of propane and MEK has been found to be 16.5 and 13.2 kcal mol -1 , respectively. Among the two models, the redox one, however, gave a better fit to the kinetic data for both the Combustion of propane and MEK.
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Kinetics of the Complete Combustion of dilute propane and toluene over iron-doped ZrO2 catalyst
Energy & Fuels, 2005Co-Authors: V R Choudhary, G.m Deshmukh, D. P. MishraAbstract:The kinetics of the Complete Combustion of propane and toluene at very low concentrations in air (0.45 and 0.3 mol % in air, respectively) over iron-doped ZrO2 (cubic) catalyst (Fe/Zr = 0.25) at different temperatures (598−723 K) in kinetic control regime have been investigated. The Combustion rate data could be fitted very well to both the power-law and redox (Mars−Van Krevelen) models. However, the redox model provided a better fit to the kinetic data for the propane Combustion. It also showed a better fit to the toluene Combustion data at the lower temperatures (623 K). The reaction order (with respect to the hydrocarbon), apparent activation energy, and frequency factor (from the power-law model) for the propane Combustion were 0.96 (average), 21.16 kcal/mol, and 4.67 × 105 mol g-1 h-1 kPa-n, respectively, and those for the toluene Combustion were 0.77 (average), 26.08 kcal/mol, and 1.48 × 107 mol g-1 h-1 kPa-n, respectively.
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Low temperature Complete Combustion of dilute toluene and methyl ethyl ketone over transition metal-doped ZrO2 (cubic) catalysts
Catalysis Communications, 2004Co-Authors: V R Choudhary, G.m Deshmukh, S.g. PataskarAbstract:Abstract Complete Combustion of dilute toluene (0.3 mol% toluene in air) and methyl ethyl ketone (0.4 mol% MEK in air) over transition metal (viz. Mn, Co, Cr, Fe and Ni)-doped ZrO2 (cubic) catalysts at different temperatures (470–750 K) and space velocity of 51 dm3 g−1 h−1 have been investigated for controlling the toluene and methyl ethyl ketone (MEK) emissions. The catalysts are compared for their catalytic ignition temperature and activity in the Combustion of toluene and MEK. The Co-doped ZrO2 and Cr-doped ZrO2 are highly promising catalysts for the Combustion of toluene and MEK, respectively.
Chen-bin Wang - One of the best experts on this subject based on the ideXlab platform.
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Low temperature Complete Combustion of methane over titania-modified alumina-supported palladium ☆
Fuel, 2002Co-Authors: Chen-bin Wang, Hung-kuan Lin, Hui-chi ChiuAbstract:Abstract Effects of titania on the catalytic property of Pd/Al 2 O 3 towards methane Combustion were examined. The results revealed that the catalytic activity of the Pd/Al 2 O 3 catalyst was considerably improved by pre-coating the alumina support with titania at low temperature (below 700 °C). Hydrogen chemisorption and BET measurements revealed that the titania-modified alumina supports could modify the support characterization to achieve a high dispersion of palladium. Temperature-programmed reduction and temperature-programmed desorption study further demonstrated that the coating of Pd/Al 2 O 3 catalysts with titania can weaken the bond strength of Pd–O and enhance their catalytic activity towards methane Combustion at lower temperature.
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low temperature Complete Combustion of methane over titania modified alumina supported palladium
Fuel, 2002Co-Authors: Chen-bin Wang, Hung-kuan Lin, Hui-chi ChiuAbstract:Abstract Effects of titania on the catalytic property of Pd/Al 2 O 3 towards methane Combustion were examined. The results revealed that the catalytic activity of the Pd/Al 2 O 3 catalyst was considerably improved by pre-coating the alumina support with titania at low temperature (below 700 °C). Hydrogen chemisorption and BET measurements revealed that the titania-modified alumina supports could modify the support characterization to achieve a high dispersion of palladium. Temperature-programmed reduction and temperature-programmed desorption study further demonstrated that the coating of Pd/Al 2 O 3 catalysts with titania can weaken the bond strength of Pd–O and enhance their catalytic activity towards methane Combustion at lower temperature.
G.m Deshmukh - One of the best experts on this subject based on the ideXlab platform.
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Low-Temperature Complete Combustion of a Dilute Mixture of Methane and Propane over Transition-Metal-Doped ZrO2 Catalysts: Effect of the Presence of Propane on Methane Combustion
Environmental Science & Technology, 2005Co-Authors: V R Choudhary, G.m Deshmukh, S.g. PataskarAbstract:Complete Combustion of dilute methane alone or a dilute mixture of methane and propane over transition-metal (viz. Mn, Co, Cr, Fe, and Ni)-doped ZrO2 (cubic) catalysts at different temperatures (523−873 K) and a space velocity of 51 000 cm3·g-1·h-1 has been investigated for controlling methane and propane emissions from exhaust gases. The catalysts are compared for their catalytic ignition temperature and activity in the Combustion of propane and methane in the presence of each other. The methane Combustion activity of all the catalysts is strongly influenced by the presence of propane; it is decreased markedly. In the Combustion of mixed methane and propane the Mn-doped ZrO2 and Cr-doped ZrO2 catalysts show the highest activity in the Combustion of methane and propane, respectively; the Ni-doped ZrO2 shows the lowest activity in both cases. In the Combustion of mixed methane and propane the propane Combustion is enhanced but the methane Combustion retarded when the Cr-doped ZrO2 and Mn-doped ZrO2 catalys...
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Kinetics of the Complete Combustion of dilute propane and methyl ethyl ketone over Cr-doped ZrO2 catalyst
Chemical Engineering Science, 2005Co-Authors: V R Choudhary, G.m DeshmukhAbstract:Abstract The kinetics of the Complete Combustion of propane and methyl ethyl ketone (MEK) at very low concentration in air (0.45 and 0.4 mol% in air, respectively) over Cr-doped ZrO 2 (cubic) catalyst ( Cr / Zr = 0.25 ) at different temperatures (485–673 K) in the kinetic control regime have been investigated. The Combustion rate data could be fitted well to both the power law and redox (Mars–Van Krevelen) models. From the power law model, the apparent activation energy for the Combustion of propane and MEK has been found to be 16.5 and 13.2 kcal mol - 1 , respectively. Among the two models, the redox one, however, gave a better fit to the kinetic data for both the Combustion of propane and MEK.
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Kinetics of the Complete Combustion of dilute propane and MEK over Cr-doped ZrO 2 catalyst
2005Co-Authors: V R Choudhary, G.m DeshmukhAbstract:The kinetics of the Complete Combustion of propane and methyl ethyl ketone (MEK) at very low concentration in air (0.45 and 0.4 mol% in air, respectively) over Cr-doped ZrO 2 (cubic) catalyst (Cr/Zr=0.25) at different temperatures (485-673 K) in the kinetic control regime have been investigated. The Combustion rate data could be fitted well to both the power law and redox (Mars-Van Krevelen) models. From the power law model, the apparent activation energy for the Combustion of propane and MEK has been found to be 16.5 and 13.2 kcal mol -1 , respectively. Among the two models, the redox one, however, gave a better fit to the kinetic data for both the Combustion of propane and MEK.
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Kinetics of the Complete Combustion of dilute propane and toluene over iron-doped ZrO2 catalyst
Energy & Fuels, 2005Co-Authors: V R Choudhary, G.m Deshmukh, D. P. MishraAbstract:The kinetics of the Complete Combustion of propane and toluene at very low concentrations in air (0.45 and 0.3 mol % in air, respectively) over iron-doped ZrO2 (cubic) catalyst (Fe/Zr = 0.25) at different temperatures (598−723 K) in kinetic control regime have been investigated. The Combustion rate data could be fitted very well to both the power-law and redox (Mars−Van Krevelen) models. However, the redox model provided a better fit to the kinetic data for the propane Combustion. It also showed a better fit to the toluene Combustion data at the lower temperatures (623 K). The reaction order (with respect to the hydrocarbon), apparent activation energy, and frequency factor (from the power-law model) for the propane Combustion were 0.96 (average), 21.16 kcal/mol, and 4.67 × 105 mol g-1 h-1 kPa-n, respectively, and those for the toluene Combustion were 0.77 (average), 26.08 kcal/mol, and 1.48 × 107 mol g-1 h-1 kPa-n, respectively.
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Low temperature Complete Combustion of dilute toluene and methyl ethyl ketone over transition metal-doped ZrO2 (cubic) catalysts
Catalysis Communications, 2004Co-Authors: V R Choudhary, G.m Deshmukh, S.g. PataskarAbstract:Abstract Complete Combustion of dilute toluene (0.3 mol% toluene in air) and methyl ethyl ketone (0.4 mol% MEK in air) over transition metal (viz. Mn, Co, Cr, Fe and Ni)-doped ZrO2 (cubic) catalysts at different temperatures (470–750 K) and space velocity of 51 dm3 g−1 h−1 have been investigated for controlling the toluene and methyl ethyl ketone (MEK) emissions. The catalysts are compared for their catalytic ignition temperature and activity in the Combustion of toluene and MEK. The Co-doped ZrO2 and Cr-doped ZrO2 are highly promising catalysts for the Combustion of toluene and MEK, respectively.