Tracing the transient reaction kinetics of adsorbed species by in situ/operando infrared spectroscopy
The dynamic reaction behavior (i.e., transient responses) of IR-observable adsorbed species and gaseous products obtained from transient kinetic studies provide valuable kinetic and mechanistic information, namely: the abundance of active intermediates and their reactivity distribution, the chemical...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Catalysis Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1566736723001085 |
| _version_ | 1797801034937008128 |
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| author | Steven S.C. Chuang |
| author_facet | Steven S.C. Chuang |
| author_sort | Steven S.C. Chuang |
| collection | DOAJ |
| description | The dynamic reaction behavior (i.e., transient responses) of IR-observable adsorbed species and gaseous products obtained from transient kinetic studies provide valuable kinetic and mechanistic information, namely: the abundance of active intermediates and their reactivity distribution, the chemical structure of IR-observable active and spectator species, the sequence of their formation, and the kinetically significant and rate-determining step under reaction conditions of practical catalysis. We discuss the use of transient response data to elucidate the reaction mechanisms of several gas-solid reactions: CO/H2, CO/H2/C2H4, photocatalytic oxidation of ethanol, and the CO2-amine reaction. The IR coupled with transient kinetic techniques is especially useful for investigating the mechanisms of photocatalytic reactions because both photogenerated electrons and many adsorbed species are IR-active (exhibiting measurable IR bands), and their evolution occurs on a time scale of seconds at ambient temperature. We highlight the key features and limitations of in situ IR with transient kinetics, as well as their significance in catalyst design. |
| first_indexed | 2024-03-13T04:44:17Z |
| format | Article |
| id | doaj.art-4229436c91f24775b4fae8f7d20fda98 |
| institution | Directory Open Access Journal |
| issn | 1873-3905 |
| language | English |
| last_indexed | 2024-03-13T04:44:17Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Catalysis Communications |
| spelling | doaj.art-4229436c91f24775b4fae8f7d20fda982023-06-19T04:27:50ZengElsevierCatalysis Communications1873-39052023-07-01180106706Tracing the transient reaction kinetics of adsorbed species by in situ/operando infrared spectroscopySteven S.C. Chuang0Corresponding author.; School of Polymer Science and Polymer Engineering, The University of Akron, Akron, OH 44325-3909, USAThe dynamic reaction behavior (i.e., transient responses) of IR-observable adsorbed species and gaseous products obtained from transient kinetic studies provide valuable kinetic and mechanistic information, namely: the abundance of active intermediates and their reactivity distribution, the chemical structure of IR-observable active and spectator species, the sequence of their formation, and the kinetically significant and rate-determining step under reaction conditions of practical catalysis. We discuss the use of transient response data to elucidate the reaction mechanisms of several gas-solid reactions: CO/H2, CO/H2/C2H4, photocatalytic oxidation of ethanol, and the CO2-amine reaction. The IR coupled with transient kinetic techniques is especially useful for investigating the mechanisms of photocatalytic reactions because both photogenerated electrons and many adsorbed species are IR-active (exhibiting measurable IR bands), and their evolution occurs on a time scale of seconds at ambient temperature. We highlight the key features and limitations of in situ IR with transient kinetics, as well as their significance in catalyst design.http://www.sciencedirect.com/science/article/pii/S1566736723001085Adsorbed reaction intermediatesOperando IR spectroscopyTransient kineticsSSITKAPhotocatalysisCO2 capture |
| spellingShingle | Steven S.C. Chuang Tracing the transient reaction kinetics of adsorbed species by in situ/operando infrared spectroscopy Catalysis Communications Adsorbed reaction intermediates Operando IR spectroscopy Transient kinetics SSITKA Photocatalysis CO2 capture |
| title | Tracing the transient reaction kinetics of adsorbed species by in situ/operando infrared spectroscopy |
| title_full | Tracing the transient reaction kinetics of adsorbed species by in situ/operando infrared spectroscopy |
| title_fullStr | Tracing the transient reaction kinetics of adsorbed species by in situ/operando infrared spectroscopy |
| title_full_unstemmed | Tracing the transient reaction kinetics of adsorbed species by in situ/operando infrared spectroscopy |
| title_short | Tracing the transient reaction kinetics of adsorbed species by in situ/operando infrared spectroscopy |
| title_sort | tracing the transient reaction kinetics of adsorbed species by in situ operando infrared spectroscopy |
| topic | Adsorbed reaction intermediates Operando IR spectroscopy Transient kinetics SSITKA Photocatalysis CO2 capture |
| url | http://www.sciencedirect.com/science/article/pii/S1566736723001085 |
| work_keys_str_mv | AT stevenscchuang tracingthetransientreactionkineticsofadsorbedspeciesbyinsituoperandoinfraredspectroscopy |