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CO Preferential Oxidation in a Microchannel Reactor Using a Ru-Cs/Al2O3 Catalyst: Experimentation and CFD Modelling. Processes (Basel) 2021. [DOI: 10.3390/pr9050867] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This work presents an experimental and modelling evaluation of the preferential oxidation of CO (CO PROX) from a H2-rich gas stream typically produced from fossil fuels and ultimately intended for hydrogen fuel cell applications. A microchannel reactor containing a washcoated 8.5 wt.% Ru/Al2O3 catalyst was used to preferentially oxidise CO to form CO2 in a gas stream containing (by vol.%): 1.4% CO, 10% CO2, 18% N2, 68.6% H2, and 2% added O2. CO concentrations in the product gas were as low as 42 ppm (99.7% CO conversion) at reaction temperatures in the range 120–140 °C and space velocities in the range 65.2–97.8 NL gcat−1 h−1. For these conditions, less than 4% of the H2 feed was consumed via its oxidation and reverse water-gas shift. Furthermore, a computational fluid dynamic (CFD) model describing the microchannel reactor for CO PROX was developed. With kinetic parameter estimation and goodness of fit calculations, it was determined that the model described the reactor with a confidence interval far greater than 95%. In the temperature range 100–200 °C, the model yielded CO PROX reaction rate profiles, with associated mass transport properties, within the axial dimension of the microchannels––not quantifiable during the experimental investigation. This work demonstrates that microchannel reactor technology, supporting an active catalyst for CO PROX, is well suited for CO abatement in a H2-rich gas stream at moderate reaction temperatures and high space velocities.
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Bathomarco CG, Franke KN, Ferreira AP. Aspects of the interaction between Au and Fe in supported catalysts applied to the preferential CO oxidation. Catal Today 2020. [DOI: 10.1016/j.cattod.2018.12.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ishida T, Murayama T, Taketoshi A, Haruta M. Importance of Size and Contact Structure of Gold Nanoparticles for the Genesis of Unique Catalytic Processes. Chem Rev 2019; 120:464-525. [DOI: 10.1021/acs.chemrev.9b00551] [Citation(s) in RCA: 249] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Tamao Ishida
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
- Research Center for Gold Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Toru Murayama
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
- Research Center for Gold Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Ayako Taketoshi
- Department of Applied Chemistry for Environment, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
- Research Center for Gold Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
| | - Masatake Haruta
- Research Center for Gold Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University 1-1 Minami-Osawa, Hachioji, Tokyo 192-0397, Japan
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Zhai X, Liu C, Chang Q, Zhao C, Tan R, Peng H, Liu D, Zhang P, Gui J. TiO2-nanosheet-assembled microspheres as Pd-catalyst support for highly-stable low-temperature CO oxidation. NEW J CHEM 2018. [DOI: 10.1039/c8nj03768j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The Pd-embedded-in-TiO2 structure could improve the activity and stability of the Pd/TiO2 catalyst.
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Affiliation(s)
- Xuefeng Zhai
- State Key Laboratory of Separation Membranes & Membrane Processes
- College of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Chengwei Liu
- State Key Laboratory of Separation Membranes & Membrane Processes
- College of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Qiang Chang
- State Key Laboratory of Coal Conversion
- Institute of Coal Chemistry
- Chinese Academy of Sciences
- Taiyuan 030001
- People's Republic of China
| | - Chunqiu Zhao
- State Key Laboratory of Separation Membranes & Membrane Processes
- College of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Rui Tan
- State Key Laboratory of Separation Membranes & Membrane Processes
- College of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Hailong Peng
- State Key Laboratory of Separation Membranes & Membrane Processes
- College of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Dan Liu
- State Key Laboratory of Separation Membranes & Membrane Processes
- College of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Peng Zhang
- State Key Laboratory of Separation Membranes & Membrane Processes
- College of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
| | - Jianzhou Gui
- State Key Laboratory of Separation Membranes & Membrane Processes
- College of Environment and Chemical Engineering
- Tianjin Polytechnic University
- Tianjin 300387
- China
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Enhanced catalytic activities and selectivities in preferential oxidation of CO over ceria-promoted Au/Al 2 O 3 catalysts. CHINESE JOURNAL OF CATALYSIS 2016. [DOI: 10.1016/s1872-2067(16)62469-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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