Catalytic soot combustion─ general concepts and alkali promotion

P Legutko, P Stelmachowski, X Yu, Z Zhao… - ACS …, 2023 - ACS Publications
In this Review, we discuss catalytic systems for soot combustion. The focus is on alkali-
containing materials since they exhibit the most promising and platinum group metal (PGM) …

Recent manganese oxide octahedral molecular sieves (Oms–2) with isomorphically substituted cationic dopants and their catalytic applications

F Sabaté, MJ Sabater - Catalysts, 2021 - mdpi.com
The present report describes the structural and physical–chemical variations of the
potassium manganese oxide mineral, α–MnO2, which is a specific manganese octahedral …

Multiple doping of cryptomelane catalysts by Co, Cu, Ag and Ca for efficient soot oxidation and its effect on NO2 formation and SO2 resistance

M Fedyna, P Legutko, J Gryboś, X Yu, Z Zhao… - Fuel, 2023 - Elsevier
Two series of cryptomelane doped with Cu 2+ and Ag+ ions were synthesized by
coprecipitation method, and additionally impregnated with Ca 2+, Co 2+ and Ag+ ions to …

Mechanistic Insights into Oxygen Dynamics in Soot Combustion over Cryptomelane Catalysts in Tight and Loose Contact Modes via 18O2/16O2 Isotopic Variable …

J Gryboś, M Fedyna, P Legutko, B Leszczyński… - ACS …, 2021 - ACS Publications
A cryptomelane K-OMS-2 model catalyst of a well-defined nanorod morphology, dominated
by the (100) and (110) planes, was synthesized, and thoroughly examined by means of …

Intricate role of doping with d0 ions (Zr4+, V5+, Mo6+, W6+) on cryptomelane (K-OMS-2) performance in the catalytic soot combustion in presence of NO and SO2

P Legutko, M Fedyna, J Gryboś, X Yu, Z Zhao… - Fuel, 2022 - Elsevier
Two series of cryptomelane doped with d 0 ions (Zr 4+, V 5+, Mo 6+, W 6+) were synthesized
by impregnation and coprecipitation methods. The obtained samples were characterized in …

New method for the preparation of hierarchical nanotube K0. 3xMnxCe1-xOδ catalysts and their excellent catalytic performance for soot combustion

C Zhang, S Gao, S Zhou, D Yu, L Wang, X Fan… - Applied Catalysis B …, 2024 - Elsevier
A series of nanofibrous K-Mn-Ce composite oxide catalysts were prepared via a centrifugal
spinning method for the first time, and their physicochemical properties were studied. The …

Facile preparation of alkali metal‐modified hollow nanotubular manganese‐based oxide catalysts and their excellent catalytic soot combustion performance

C Zhang, S Gao, X Chen, D Yu, L Wang, X Fan… - Smart …, 2024 - Wiley Online Library
The soot emitted during the operation of diesel engine exhaust seriously threatens the
human health and environment, so treating diesel engine exhaust is critical. At present, the …

Structure-sensitive behavior of supported vanadia-based catalysts for combustion of soot

T Rzadki, P Legutko, A Adamski, A Kotarba… - Catalysts, 2023 - mdpi.com
Catalytic performance of 3 and 5 wt.% of vanadia, supported on zirconia, zirconia-ceria, and
zirconia-yttria, tested in the combustion of soot without and in the presence of NO was …

Effect of doping copper on K-OMS-2 over soot oxidation activity

R Nithya, H Dasari, S Nethaji, S Sriram… - Materials Today …, 2023 - Elsevier
The hydrothermal approach was used to develop a sequence of copper-doped KOMS2,
which was applied for soot oxidation. XRD pattern showed the tetragonal phase of KOMS2 …

A Negative Effect of Niobium‐Doped Ceria on Soot Oxidation Activity

SS Patil, S Naik, MD Ramesh, H Dasari… - Chemical …, 2022 - Wiley Online Library
Niobium‐doped ceria catalysts were synthesized to study soot oxidation activity. X‐Ray
diffraction (XRD) and Raman analysis of the samples revealed the presence of a fluorite …