Influence of temperature and volume ratio of Cu:Ni exchange solutions on the chemical properties of the guest metals in prepared CuNi–mordenite materials: Evidence of direct competition between copper and nickel ions DOI
R. Obeso–Estrella, Rosario I. Yocupicio-Gaxiola, Luis Antonio Flores Sánchez

et al.

Microporous and Mesoporous Materials, Journal Year: 2023, Volume and Issue: 362, P. 112797 - 112797

Published: Sept. 4, 2023

Language: Английский

Effect of zeolite framework on the NO operating cycle in Pd-based passive NOx adsorbers DOI

Marvi Kaushik,

Tuhin Suvra Khan, M. Ali Haider

et al.

Journal of Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 116149 - 116149

Published: April 1, 2025

Language: Английский

Citations

0
Achieving High Dispersion of Pd in Small-Pore Zeolite SSZ-13: A High-Efficiency Low-Temperature NOx Adsorber DOI Creative Commons
Yatao Liu, Kaixiang Li,

Yuankai Shao

et al.

ACS Omega, Journal Year: 2024, Volume and Issue: 9(28), P. 30452 - 30460

Published: July 5, 2024

Passive NOx adsorber (PNA) materials are primarily considered for reducing nitrogen oxide emissions during the low-temperature cold start of a motor vehicle. Pd/SSZ-13 has attracted considerable attention because its outstanding hydrothermal stability and sulfur resistance. Optimizing dispersion precious metal Pd in is crucial enhancing PNA performance adsorption capability. In this study, we prepared using different methods evaluated their influence on The characterization results show that catalyst by quantitative ion-exchange method as high 92.13%, loading amount 98.93%. predominantly exists Pd2+, achieving near-total further improving catalyst's capacity. This study offers innovative approaches applying material, serving reference optimization enhancement. Continued research into preparation could offer solutions to reduce vehicle emissions.

Language: Английский

Citations

2
Novel insights on the Pd speciation in Pd/SSZ-13 and on the role of H2O in the Pd reduction by CO DOI Creative Commons
Sara Morandi, L. Castoldi, Roberto Matarrese

et al.

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2024, Volume and Issue: 324, P. 124945 - 124945

Published: Aug. 8, 2024

Pd speciation induced by the combined effect of CO and water on Pd/SSZ-13 samples prepared both impregnation ion exchange was examined FT-IR spectroscopy adsorbed at room temperature liquid nitrogen anhydrous hydrated samples. Starting from literature findings related to reducing cations, present work gives precise spectroscopic evidences how is necessary in this process not only for compensating with H

Language: Английский

Citations

1
A simple redox model of low-T NO + CO adsorption onto Pd-CHA as effective Passive NOx Adsorbers DOI Creative Commons
Umberto Iacobone, Andrea Gjetja,

Nicola Usberti

et al.

Reaction Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 10(3), P. 561 - 575

Published: Nov. 18, 2024

By accounting for the redox chemistry in NO and CO interaction with Pd-CHA, we develop a simple kinetic model that captures dynamics of adsorption at low T (100–200 °C) effects H 2 O on storage efficiency.

Language: Английский

Citations

1
Influence of temperature and volume ratio of Cu:Ni exchange solutions on the chemical properties of the guest metals in prepared CuNi–mordenite materials: Evidence of direct competition between copper and nickel ions DOI
R. Obeso–Estrella, Rosario I. Yocupicio-Gaxiola, Luis Antonio Flores Sánchez

et al.

Microporous and Mesoporous Materials, Journal Year: 2023, Volume and Issue: 362, P. 112797 - 112797

Published: Sept. 4, 2023

Language: Английский

Citations

0