Redispersion of PdO to Pd ions in Pd/BEA and Pd/ZSM-5 during low-temperature NO adsorption in the presence of H2O and CO DOI
Yingjie Wang,

Xiaoyan Shi,

Yuxin Wang

et al.

Applied Catalysis A General, Journal Year: 2024, Volume and Issue: 672, P. 119605 - 119605

Published: Feb. 1, 2024

Language: Английский

Unveiling H2O2-optimized NOx adsorption-selective catalytic reduction (AdSCR) performance of WO3/CeZrO2 catalyst DOI
Yan Huang, Shuang Liu,

Mingming Pei

et al.

Rare Metals, Journal Year: 2023, Volume and Issue: 42(11), P. 3755 - 3765

Published: Sept. 7, 2023

Language: Английский

Citations

27
Cold-Start NOx Mitigation by Passive Adsorption Using Pd-Exchanged Zeolites: From Material Design to Mechanism Understanding and System Integration DOI
Ying Li, Dongdong Chen, Xin Xu

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(9), P. 3467 - 3485

Published: Feb. 21, 2023

It remains a major challenge to abate efficiently the harmful nitrogen oxides (NOx) in low-temperature diesel exhausts emitted during cold-start period of engine operation. Passive NOx adsorbers (PNA), which could temporarily capture at low temperatures (below 200 °C) and release stored higher (normally 250–450 downstream selective catalytic reduction unit for complete abatement, hold promise mitigate emissions. In this review, recent advances material design, mechanism understanding, system integration are summarized PNA based on palladium-exchanged zeolites. First, we discuss choices parent zeolite, Pd precursor, synthetic method synthesis Pd-zeolites with atomic dispersions, review effect hydrothermal aging properties performance Pd-zeolites. Then, show how different experimental theoretical methodologies can be integrated gain mechanistic insights into nature active sites, storage/release chemistry, as well interactions between typical components/poisons exhausts. This also gathers several novel designs modern exhaust after-treatment systems practical application. At end, challenges, important implications, further development real application Pd-zeolite-based mitigation.

Language: Английский

Citations

26
Mechanism of propylene effect on the NH3-SCR performance of Cu-SSZ-13 catalyst DOI

Wenqing Ding,

Yu Sun, Jingjing Liu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149272 - 149272

Published: Feb. 3, 2024

Language: Английский

Citations

16
Recycling nitrogen from liquid digestate via novel reactive struvite and zeolite minerals to mitigate agricultural pollution DOI
Giulio Galamini, Giacomo Ferretti, Christoph Rosinger

et al.

Chemosphere, Journal Year: 2023, Volume and Issue: 317, P. 137881 - 137881

Published: Jan. 16, 2023

Language: Английский

Citations

18
Understanding Na functions on distribution of Cu species within Cu-SSZ-13 for the selective reduction of NO with NH3 DOI
Na Zhu, Lisen Hou, Shuai Li

et al.

Separation and Purification Technology, Journal Year: 2024, Volume and Issue: 347, P. 127630 - 127630

Published: April 22, 2024

Language: Английский

Citations

8
The role of Pt valence state and La doping on titanium supported Pt-La/TiO2 catalyst for selective catalytic reduction with H2 DOI
Geo Jong Kim,

Jung Hun Shin,

Su Bin Kim

et al.

Applied Surface Science, Journal Year: 2022, Volume and Issue: 608, P. 155040 - 155040

Published: Oct. 4, 2022

Language: Английский

Citations

24
NO adsorption/desorption pathways over Pd/SSZ-13 low temperature NOx adsorbers investigated by operando FT-IR spectroscopy and microreactor study DOI Creative Commons
Roberto Matarrese, L. Castoldi, Sara Morandi

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2023, Volume and Issue: 331, P. 122723 - 122723

Published: April 3, 2023

In this study a Pd-doped SSZ-13 zeolite sample is synthesized, characterized and evaluated for potential use in the low-temperature NOx adsorption. TEM/HR-TEM in-situ CO/NO adsorptions followed by FT-IR spectroscopy are used to gain information on nature accessibility of Pd sites. It found that over calcined present as isolated Pd+ Pd2+ cations formed ion exchange with Brønsted acid sites zeolite, species belonging PdOx particles external surface zeolite. Isolated ions prevail fresh sample. The adsorption/desorption performances, investigated microreactor studies operando under relevant operating conditions, indicate significant amounts NO stored catalyst (i.e. ca. 80–95 μmol/gcat temperature range 50–150 °C) which suggests participation uptake both Pdn+ particles. adsorbed nitrosyls (anhydrous hydrated) Pd+; at low temperatures formation nitrates also observed. occurs evolution NO2 according storage mechanism implies (i) initial adsorption Pd2+, (ii) reduction accompanied release eventually (iii) Pd+. suggested interconversion into during herein discussed based evidences. decomposed upon heating; responsible desorption (below 200 °C), whereas show much higher stability lead high (above °C). presence feed stream increases capacity results mainly surface/bulk nitro-compounds expense nitrosyls.

Language: Английский

Citations

16
Metal-support interaction induced atomic dispersion and redispersion of Pd on CeO2 for passive NOx adsorption DOI
Zhihui Wang, Bingbing Chen, Qi Zhao

et al.

Chemical Engineering Journal, Journal Year: 2023, Volume and Issue: 470, P. 144080 - 144080

Published: June 11, 2023

Language: Английский

Citations

15
An oxidation-adsorption site separation strategy for stabilizing Pd-Pt/SSZ-13 PNA materials under high CO pressure DOI

Chen Wang,

Xue Kang,

Yuntao Gu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 158299 - 158299

Published: Dec. 1, 2024

Language: Английский

Citations

5
The effect of hydrothermal aging on Mn2O3/Cu-SSZ-39 composite catalysts for selective catalytic reduction of NOx by NH3 DOI
Mingyu Xie, Yutian Zeng, Kai Cui

et al.

Catalysis Today, Journal Year: 2024, Volume and Issue: 430, P. 114557 - 114557

Published: Jan. 30, 2024

Language: Английский

Citations

4