Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species
Само за регистроване кориснике
2020
Аутори
Wan, YuyiYang, Guangpeng
Xiang, Jinyao
Shen, Xiaoqiang
Yang, Dafei
Chen, Yanrong
Rac, Vladislav
Rakić, Vesna
Du, Xuesen
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Cu-SAPO-34 catalysts with varied Cu loadings were synthesized through ion exchange to study the influence of water on the NH3-SCR reaction. The catalytic activities were evaluated by selective catalytic reduction of NO under a reactant feed in the presence/absence of water. Transient experiments were designed to study the response of NO conversion to the presence of water. H-2-TPR and DFT calculations were performed to study the reducibility of Cu species. NH3-TPD and XPS were conducted to reveal the migration of Cu species. The results show that water could remarkably improve NO reduction activities and the promoting effect is more significant on the catalyst with low Cu loading. Both transient and permanent influences were found in this promoting phenomenon. For the transient influence, water has been proved to accelerate the re-oxidation half-cycle. Moreover, water can enhance the promoting effect of the SCR feed on the migration of Cu species. These unanchored Cu ions migrate to de...fect sites to form active sites, which lead to a permanent influence of water.
Извор:
Dalton Transactions, 2020, 49, 3, 764-773Издавач:
- Royal Soc Chemistry, Cambridge
Финансирање / пројекти:
- National Natural Science Foundation of China (NSFC) [51506015]
- Chongqing Technology Innovation and Application Demonstration Projects [cstc2018jscx-msyb0999]
- Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities [2018CDQYDL0050, 2018CDJDDL0004]
- Open Fund of Key Laboratory of Low-grade Energy Utilization Technologies and Systems
- Ministry of Education of ChinaMinistry of Education, China [LLEUTS-2019002]
DOI: 10.1039/c9dt03848e
ISSN: 1477-9226
PubMed: 31850452
WoS: 000509360800022
Scopus: 2-s2.0-85078352105
Институција/група
Poljoprivredni fakultetTY - JOUR AU - Wan, Yuyi AU - Yang, Guangpeng AU - Xiang, Jinyao AU - Shen, Xiaoqiang AU - Yang, Dafei AU - Chen, Yanrong AU - Rac, Vladislav AU - Rakić, Vesna AU - Du, Xuesen PY - 2020 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/5328 AB - Cu-SAPO-34 catalysts with varied Cu loadings were synthesized through ion exchange to study the influence of water on the NH3-SCR reaction. The catalytic activities were evaluated by selective catalytic reduction of NO under a reactant feed in the presence/absence of water. Transient experiments were designed to study the response of NO conversion to the presence of water. H-2-TPR and DFT calculations were performed to study the reducibility of Cu species. NH3-TPD and XPS were conducted to reveal the migration of Cu species. The results show that water could remarkably improve NO reduction activities and the promoting effect is more significant on the catalyst with low Cu loading. Both transient and permanent influences were found in this promoting phenomenon. For the transient influence, water has been proved to accelerate the re-oxidation half-cycle. Moreover, water can enhance the promoting effect of the SCR feed on the migration of Cu species. These unanchored Cu ions migrate to defect sites to form active sites, which lead to a permanent influence of water. PB - Royal Soc Chemistry, Cambridge T2 - Dalton Transactions T1 - Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species EP - 773 IS - 3 SP - 764 VL - 49 DO - 10.1039/c9dt03848e ER -
@article{ author = "Wan, Yuyi and Yang, Guangpeng and Xiang, Jinyao and Shen, Xiaoqiang and Yang, Dafei and Chen, Yanrong and Rac, Vladislav and Rakić, Vesna and Du, Xuesen", year = "2020", abstract = "Cu-SAPO-34 catalysts with varied Cu loadings were synthesized through ion exchange to study the influence of water on the NH3-SCR reaction. The catalytic activities were evaluated by selective catalytic reduction of NO under a reactant feed in the presence/absence of water. Transient experiments were designed to study the response of NO conversion to the presence of water. H-2-TPR and DFT calculations were performed to study the reducibility of Cu species. NH3-TPD and XPS were conducted to reveal the migration of Cu species. The results show that water could remarkably improve NO reduction activities and the promoting effect is more significant on the catalyst with low Cu loading. Both transient and permanent influences were found in this promoting phenomenon. For the transient influence, water has been proved to accelerate the re-oxidation half-cycle. Moreover, water can enhance the promoting effect of the SCR feed on the migration of Cu species. These unanchored Cu ions migrate to defect sites to form active sites, which lead to a permanent influence of water.", publisher = "Royal Soc Chemistry, Cambridge", journal = "Dalton Transactions", title = "Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species", pages = "773-764", number = "3", volume = "49", doi = "10.1039/c9dt03848e" }
Wan, Y., Yang, G., Xiang, J., Shen, X., Yang, D., Chen, Y., Rac, V., Rakić, V.,& Du, X.. (2020). Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species. in Dalton Transactions Royal Soc Chemistry, Cambridge., 49(3), 764-773. https://doi.org/10.1039/c9dt03848e
Wan Y, Yang G, Xiang J, Shen X, Yang D, Chen Y, Rac V, Rakić V, Du X. Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species. in Dalton Transactions. 2020;49(3):764-773. doi:10.1039/c9dt03848e .
Wan, Yuyi, Yang, Guangpeng, Xiang, Jinyao, Shen, Xiaoqiang, Yang, Dafei, Chen, Yanrong, Rac, Vladislav, Rakić, Vesna, Du, Xuesen, "Promoting effects of water on the NH3-SCR reaction over Cu-SAPO-34 catalysts: transient and permanent influences on Cu species" in Dalton Transactions, 49, no. 3 (2020):764-773, https://doi.org/10.1039/c9dt03848e . .