The Experts below are selected from a list of 8977905 Experts worldwide ranked by ideXlab platform
G A Somorjai - One of the best experts on this subject based on the ideXlab platform.
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dramatically different kinetics and mechanism at solid liquid and solid gas interfaces for catalytic isopropanol oxidation over size controlled platinum nanoparticles
Journal of the American Chemical Society, 2014Co-Authors: Hailiang Wang, Andras Sapi, Christopher Thompson, Danylo Zherebetskyy, James M Krier, Lindsay M Carl, Linwang Wang, G A SomorjaiAbstract:We synthesize platinum nanoparticles with controlled average sizes of 2, 4, 6, and 8 nm and use them as model catalysts to study isopropanol oxidation to acetone in both the liquid and gas phases at 60 °C. The reaction at the solid/liquid interface is 2 orders of magnitude slower than that at the solid/gas interface, while catalytic activity increases with the size of platinum nanoparticles for both the liquid-phase and Gas-Phase reactions. The activation energy of the Gas-Phase reaction decreases with the platinum nanoparticle size and is in general much higher than that of the liquid-phase reaction which is largely insensitive to the size of catalyst nanoparticles. Water substantially promotes isopropanol oxidation in the liquid phase. However, it inhibits the reaction in the gas phase. The kinetic results suggest different mechanisms between the liquid-phase and Gas-Phase reactions, correlating well with different orientations of IPA species at the solid/liquid interface vs the solid/gas interface as p...
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dramatically different kinetics and mechanism at solid liquid and solid gas interfaces for catalytic isopropanol oxidation over size controlled platinum nanoparticles
Journal of the American Chemical Society, 2014Co-Authors: Hailiang Wang, Andras Sapi, Christopher Thompson, Danylo Zherebetskyy, James M Krier, Lindsay M Carl, Linwang Wang, Fudong Liu, Xiaojun Cai, G A SomorjaiAbstract:We synthesize platinum nanoparticles with controlled average sizes of 2, 4, 6, and 8 nm and use them as model catalysts to study isopropanol oxidation to acetone in both the liquid and gas phases at 60 °C. The reaction at the solid/liquid interface is 2 orders of magnitude slower than that at the solid/gas interface, while catalytic activity increases with the size of platinum nanoparticles for both the liquid-phase and Gas-Phase reactions. The activation energy of the Gas-Phase reaction decreases with the platinum nanoparticle size and is in general much higher than that of the liquid-phase reaction which is largely insensitive to the size of catalyst nanoparticles. Water substantially promotes isopropanol oxidation in the liquid phase. However, it inhibits the reaction in the gas phase. The kinetic results suggest different mechanisms between the liquid-phase and Gas-Phase reactions, correlating well with different orientations of IPA species at the solid/liquid interface vs the solid/gas interface as probed by sum frequency generation vibrational spectroscopy under reaction conditions and simulated by computational calculations.
Hailiang Wang - One of the best experts on this subject based on the ideXlab platform.
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dramatically different kinetics and mechanism at solid liquid and solid gas interfaces for catalytic isopropanol oxidation over size controlled platinum nanoparticles
Journal of the American Chemical Society, 2014Co-Authors: Hailiang Wang, Andras Sapi, Christopher Thompson, Danylo Zherebetskyy, James M Krier, Lindsay M Carl, Linwang Wang, G A SomorjaiAbstract:We synthesize platinum nanoparticles with controlled average sizes of 2, 4, 6, and 8 nm and use them as model catalysts to study isopropanol oxidation to acetone in both the liquid and gas phases at 60 °C. The reaction at the solid/liquid interface is 2 orders of magnitude slower than that at the solid/gas interface, while catalytic activity increases with the size of platinum nanoparticles for both the liquid-phase and Gas-Phase reactions. The activation energy of the Gas-Phase reaction decreases with the platinum nanoparticle size and is in general much higher than that of the liquid-phase reaction which is largely insensitive to the size of catalyst nanoparticles. Water substantially promotes isopropanol oxidation in the liquid phase. However, it inhibits the reaction in the gas phase. The kinetic results suggest different mechanisms between the liquid-phase and Gas-Phase reactions, correlating well with different orientations of IPA species at the solid/liquid interface vs the solid/gas interface as p...
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dramatically different kinetics and mechanism at solid liquid and solid gas interfaces for catalytic isopropanol oxidation over size controlled platinum nanoparticles
Journal of the American Chemical Society, 2014Co-Authors: Hailiang Wang, Andras Sapi, Christopher Thompson, Danylo Zherebetskyy, James M Krier, Lindsay M Carl, Linwang Wang, Fudong Liu, Xiaojun Cai, G A SomorjaiAbstract:We synthesize platinum nanoparticles with controlled average sizes of 2, 4, 6, and 8 nm and use them as model catalysts to study isopropanol oxidation to acetone in both the liquid and gas phases at 60 °C. The reaction at the solid/liquid interface is 2 orders of magnitude slower than that at the solid/gas interface, while catalytic activity increases with the size of platinum nanoparticles for both the liquid-phase and Gas-Phase reactions. The activation energy of the Gas-Phase reaction decreases with the platinum nanoparticle size and is in general much higher than that of the liquid-phase reaction which is largely insensitive to the size of catalyst nanoparticles. Water substantially promotes isopropanol oxidation in the liquid phase. However, it inhibits the reaction in the gas phase. The kinetic results suggest different mechanisms between the liquid-phase and Gas-Phase reactions, correlating well with different orientations of IPA species at the solid/liquid interface vs the solid/gas interface as probed by sum frequency generation vibrational spectroscopy under reaction conditions and simulated by computational calculations.
Ligang Zheng - One of the best experts on this subject based on the ideXlab platform.
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the inhibition effect of gas solid two phase inhibitors on methane explosion
Energies, 2019Co-Authors: Yan Wang, Hao Feng, Xiangqing Meng, Bei Pei, Chendi Lin, Ligang ZhengAbstract:In order to study the inhibition effect of gas–solid two-phase inhibitors on a methane explosion, the influence of these parameters was investigated and compared with that of single-phase inhibitors. The results show that the inhibition effect of gas–solid two-phase inhibitors on a methane explosion is better than the added effect of two single-phase inhibitors, indicating that a synergistic effect can be obtained by gas–solid two-phase inhibitors. The two-phase inhibitors which are composed of NaHCO3 (BC) powders and inert gas have a better suppressing property than those composed of NH4H2PO4 (ABC) powders and inert gas. The two-phase inhibitors composed of CO2 and powders have a better suppressing property than those composed of N2 and powders. The 9.5% premixed methane–air mixture can be completely inhibited by 0.10 g/L BC powders mixed with 8% CO2. The suppression mechanisms of the gas–solid two-phase inhibitors on the methane explosion were discussed.
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The Inhibition Effect of Gas–Solid Two-Phase Inhibitors on Methane Explosion
'MDPI AG', 2019Co-Authors: Yan Wang, Hao Feng, Xiangqing Meng, Bei Pei, Chendi Lin, Ligang ZhengAbstract:In order to study the inhibition effect of gas⁻solid two-phase inhibitors on a methane explosion, the influence of these parameters was investigated and compared with that of single-phase inhibitors. The results show that the inhibition effect of gas⁻solid two-phase inhibitors on a methane explosion is better than the added effect of two single-phase inhibitors, indicating that a synergistic effect can be obtained by gas⁻solid two-phase inhibitors. The two-phase inhibitors which are composed of NaHCO3 (BC) powders and inert gas have a better suppressing property than those composed of NH4H2PO4 (ABC) powders and inert gas. The two-phase inhibitors composed of CO2 and powders have a better suppressing property than those composed of N2 and powders. The 9.5% premixed methane⁻air mixture can be completely inhibited by 0.10 g/L BC powders mixed with 8% CO2. The suppression mechanisms of the gas⁻solid two-phase inhibitors on the methane explosion were discussed
Linwang Wang - One of the best experts on this subject based on the ideXlab platform.
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dramatically different kinetics and mechanism at solid liquid and solid gas interfaces for catalytic isopropanol oxidation over size controlled platinum nanoparticles
Journal of the American Chemical Society, 2014Co-Authors: Hailiang Wang, Andras Sapi, Christopher Thompson, Danylo Zherebetskyy, James M Krier, Lindsay M Carl, Linwang Wang, G A SomorjaiAbstract:We synthesize platinum nanoparticles with controlled average sizes of 2, 4, 6, and 8 nm and use them as model catalysts to study isopropanol oxidation to acetone in both the liquid and gas phases at 60 °C. The reaction at the solid/liquid interface is 2 orders of magnitude slower than that at the solid/gas interface, while catalytic activity increases with the size of platinum nanoparticles for both the liquid-phase and Gas-Phase reactions. The activation energy of the Gas-Phase reaction decreases with the platinum nanoparticle size and is in general much higher than that of the liquid-phase reaction which is largely insensitive to the size of catalyst nanoparticles. Water substantially promotes isopropanol oxidation in the liquid phase. However, it inhibits the reaction in the gas phase. The kinetic results suggest different mechanisms between the liquid-phase and Gas-Phase reactions, correlating well with different orientations of IPA species at the solid/liquid interface vs the solid/gas interface as p...
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dramatically different kinetics and mechanism at solid liquid and solid gas interfaces for catalytic isopropanol oxidation over size controlled platinum nanoparticles
Journal of the American Chemical Society, 2014Co-Authors: Hailiang Wang, Andras Sapi, Christopher Thompson, Danylo Zherebetskyy, James M Krier, Lindsay M Carl, Linwang Wang, Fudong Liu, Xiaojun Cai, G A SomorjaiAbstract:We synthesize platinum nanoparticles with controlled average sizes of 2, 4, 6, and 8 nm and use them as model catalysts to study isopropanol oxidation to acetone in both the liquid and gas phases at 60 °C. The reaction at the solid/liquid interface is 2 orders of magnitude slower than that at the solid/gas interface, while catalytic activity increases with the size of platinum nanoparticles for both the liquid-phase and Gas-Phase reactions. The activation energy of the Gas-Phase reaction decreases with the platinum nanoparticle size and is in general much higher than that of the liquid-phase reaction which is largely insensitive to the size of catalyst nanoparticles. Water substantially promotes isopropanol oxidation in the liquid phase. However, it inhibits the reaction in the gas phase. The kinetic results suggest different mechanisms between the liquid-phase and Gas-Phase reactions, correlating well with different orientations of IPA species at the solid/liquid interface vs the solid/gas interface as probed by sum frequency generation vibrational spectroscopy under reaction conditions and simulated by computational calculations.
Andras Sapi - One of the best experts on this subject based on the ideXlab platform.
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dramatically different kinetics and mechanism at solid liquid and solid gas interfaces for catalytic isopropanol oxidation over size controlled platinum nanoparticles
Journal of the American Chemical Society, 2014Co-Authors: Hailiang Wang, Andras Sapi, Christopher Thompson, Danylo Zherebetskyy, James M Krier, Lindsay M Carl, Linwang Wang, G A SomorjaiAbstract:We synthesize platinum nanoparticles with controlled average sizes of 2, 4, 6, and 8 nm and use them as model catalysts to study isopropanol oxidation to acetone in both the liquid and gas phases at 60 °C. The reaction at the solid/liquid interface is 2 orders of magnitude slower than that at the solid/gas interface, while catalytic activity increases with the size of platinum nanoparticles for both the liquid-phase and Gas-Phase reactions. The activation energy of the Gas-Phase reaction decreases with the platinum nanoparticle size and is in general much higher than that of the liquid-phase reaction which is largely insensitive to the size of catalyst nanoparticles. Water substantially promotes isopropanol oxidation in the liquid phase. However, it inhibits the reaction in the gas phase. The kinetic results suggest different mechanisms between the liquid-phase and Gas-Phase reactions, correlating well with different orientations of IPA species at the solid/liquid interface vs the solid/gas interface as p...
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dramatically different kinetics and mechanism at solid liquid and solid gas interfaces for catalytic isopropanol oxidation over size controlled platinum nanoparticles
Journal of the American Chemical Society, 2014Co-Authors: Hailiang Wang, Andras Sapi, Christopher Thompson, Danylo Zherebetskyy, James M Krier, Lindsay M Carl, Linwang Wang, Fudong Liu, Xiaojun Cai, G A SomorjaiAbstract:We synthesize platinum nanoparticles with controlled average sizes of 2, 4, 6, and 8 nm and use them as model catalysts to study isopropanol oxidation to acetone in both the liquid and gas phases at 60 °C. The reaction at the solid/liquid interface is 2 orders of magnitude slower than that at the solid/gas interface, while catalytic activity increases with the size of platinum nanoparticles for both the liquid-phase and Gas-Phase reactions. The activation energy of the Gas-Phase reaction decreases with the platinum nanoparticle size and is in general much higher than that of the liquid-phase reaction which is largely insensitive to the size of catalyst nanoparticles. Water substantially promotes isopropanol oxidation in the liquid phase. However, it inhibits the reaction in the gas phase. The kinetic results suggest different mechanisms between the liquid-phase and Gas-Phase reactions, correlating well with different orientations of IPA species at the solid/liquid interface vs the solid/gas interface as probed by sum frequency generation vibrational spectroscopy under reaction conditions and simulated by computational calculations.
