The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes
Authorized Users Only
2021
Authors
Jevremović, AnkaNedić-Vasiljević, Bojana
Popa, Alexandru
Uskoković-Marković, Snežana
Ignjatović, Ljubiša
Bajuk-Bogdanović, Danica
Milojević-Rakić, Maja
Article (Published version)
Metadata
Show full item recordAbstract
Environmental implementation of novel composite materials comprising potassium tungstophosphate (KPW) and ZSM-5 zeolite was tested in ethene production and pesticide removal. The study revealed that the binding of KPW to ZSM-5 zeolites of different Si/Al ratios affects the formation of active centres for catalytic and adsorption processes. Brønsted active sites present in the zeolite framework are synergistically joined with Lewis centres and additional Brønsted centres through the impregnation of potassium tungstophosphate, which resulted in improvement of stability and activity of investigated materials. Adsorption and catalytic performance were found to be influenced by the order of addition of salt precursors and by post-synthesis thermal treatment. The best results found both in ethanol dehydration and nicosulfuron removal were for the same sample of KPW supported at zeolite ZSM-5 (SiO2/Al2O3 = 30). The prominent ethanol conversion of 98% and the highest and most stable selectivit...y toward ethene were evidenced, along with the capacity of 28.4 mg of targeted pesticide retained per gram of designed KPW/ZSM composite. This comprehensive investigation enabled insight into active site formations in the efficient KPW/ZSM composites. Different approaches to implementation revealed that a lower Si/Al ratio in zeolite promotes efficient K+ exchange, which combined with two-phased in situ preparation of KPW as active phase, evidently leads to the formation of isolated sites of superior activity for both catalytic and adsorptive procedures.
Keywords:
Adsorption / Ethanol dehydration / Pesticide / Potassium tungstophosphate / ZeoliteSource:
Microporous and Mesoporous Materials, 2021, 315Publisher:
- Elsevier B.V.
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200146 (University of Belgrade, Faculty of Physical Chemistry) (RS-200146)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200161 (University of Belgrade, Faculty of Pharmacy) (RS-200161)
DOI: 10.1016/j.micromeso.2021.110925
ISSN: 1387-1811
WoS: 000620267500001
Scopus: 2-s2.0-85100434810
Collections
Institution/Community
PharmacyTY - JOUR AU - Jevremović, Anka AU - Nedić-Vasiljević, Bojana AU - Popa, Alexandru AU - Uskoković-Marković, Snežana AU - Ignjatović, Ljubiša AU - Bajuk-Bogdanović, Danica AU - Milojević-Rakić, Maja PY - 2021 UR - https://farfar.pharmacy.bg.ac.rs/handle/123456789/3783 AB - Environmental implementation of novel composite materials comprising potassium tungstophosphate (KPW) and ZSM-5 zeolite was tested in ethene production and pesticide removal. The study revealed that the binding of KPW to ZSM-5 zeolites of different Si/Al ratios affects the formation of active centres for catalytic and adsorption processes. Brønsted active sites present in the zeolite framework are synergistically joined with Lewis centres and additional Brønsted centres through the impregnation of potassium tungstophosphate, which resulted in improvement of stability and activity of investigated materials. Adsorption and catalytic performance were found to be influenced by the order of addition of salt precursors and by post-synthesis thermal treatment. The best results found both in ethanol dehydration and nicosulfuron removal were for the same sample of KPW supported at zeolite ZSM-5 (SiO2/Al2O3 = 30). The prominent ethanol conversion of 98% and the highest and most stable selectivity toward ethene were evidenced, along with the capacity of 28.4 mg of targeted pesticide retained per gram of designed KPW/ZSM composite. This comprehensive investigation enabled insight into active site formations in the efficient KPW/ZSM composites. Different approaches to implementation revealed that a lower Si/Al ratio in zeolite promotes efficient K+ exchange, which combined with two-phased in situ preparation of KPW as active phase, evidently leads to the formation of isolated sites of superior activity for both catalytic and adsorptive procedures. PB - Elsevier B.V. T2 - Microporous and Mesoporous Materials T1 - The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes VL - 315 DO - 10.1016/j.micromeso.2021.110925 ER -
@article{ author = "Jevremović, Anka and Nedić-Vasiljević, Bojana and Popa, Alexandru and Uskoković-Marković, Snežana and Ignjatović, Ljubiša and Bajuk-Bogdanović, Danica and Milojević-Rakić, Maja", year = "2021", abstract = "Environmental implementation of novel composite materials comprising potassium tungstophosphate (KPW) and ZSM-5 zeolite was tested in ethene production and pesticide removal. The study revealed that the binding of KPW to ZSM-5 zeolites of different Si/Al ratios affects the formation of active centres for catalytic and adsorption processes. Brønsted active sites present in the zeolite framework are synergistically joined with Lewis centres and additional Brønsted centres through the impregnation of potassium tungstophosphate, which resulted in improvement of stability and activity of investigated materials. Adsorption and catalytic performance were found to be influenced by the order of addition of salt precursors and by post-synthesis thermal treatment. The best results found both in ethanol dehydration and nicosulfuron removal were for the same sample of KPW supported at zeolite ZSM-5 (SiO2/Al2O3 = 30). The prominent ethanol conversion of 98% and the highest and most stable selectivity toward ethene were evidenced, along with the capacity of 28.4 mg of targeted pesticide retained per gram of designed KPW/ZSM composite. This comprehensive investigation enabled insight into active site formations in the efficient KPW/ZSM composites. Different approaches to implementation revealed that a lower Si/Al ratio in zeolite promotes efficient K+ exchange, which combined with two-phased in situ preparation of KPW as active phase, evidently leads to the formation of isolated sites of superior activity for both catalytic and adsorptive procedures.", publisher = "Elsevier B.V.", journal = "Microporous and Mesoporous Materials", title = "The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes", volume = "315", doi = "10.1016/j.micromeso.2021.110925" }
Jevremović, A., Nedić-Vasiljević, B., Popa, A., Uskoković-Marković, S., Ignjatović, L., Bajuk-Bogdanović, D.,& Milojević-Rakić, M.. (2021). The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes. in Microporous and Mesoporous Materials Elsevier B.V.., 315. https://doi.org/10.1016/j.micromeso.2021.110925
Jevremović A, Nedić-Vasiljević B, Popa A, Uskoković-Marković S, Ignjatović L, Bajuk-Bogdanović D, Milojević-Rakić M. The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes. in Microporous and Mesoporous Materials. 2021;315. doi:10.1016/j.micromeso.2021.110925 .
Jevremović, Anka, Nedić-Vasiljević, Bojana, Popa, Alexandru, Uskoković-Marković, Snežana, Ignjatović, Ljubiša, Bajuk-Bogdanović, Danica, Milojević-Rakić, Maja, "The environmental impact of potassium tungstophosphate/ZSM-5 zeolite: Insight into catalysis and adsorption processes" in Microporous and Mesoporous Materials, 315 (2021), https://doi.org/10.1016/j.micromeso.2021.110925 . .