scholarly journals Highly active MnOx–CeO2catalyst for diesel soot combustion

RSC Advances ◽  
2017 ◽  
Vol 7 (6) ◽  
pp. 3233-3239 ◽  
Author(s):  
Han Zhao ◽  
Xiaoxia Zhou ◽  
Min Wang ◽  
Zhiguo Xie ◽  
Hangrong Chen ◽  
...  
Keyword(s):  
Diesel Soot ◽  
Soot Combustion ◽  
Composite Oxide ◽  
Highly Active ◽  
Excellent Activity

Optimized Ce–Mn composite oxide, possessing abundant active Ce3+–Mn4+ions, exhibits excellent activity for catalytic soot combustion in NOx/O2.

scholarly journals Facile synthesis of spinel Cu1.5Mn1.5O4 microspheres with high activity for the catalytic combustion of diesel soot

RSC Advances ◽  
2017 ◽  
Vol 7 (33) ◽  
pp. 20451-20459 ◽  
Author(s):  
H. Zhao ◽  
X. X. Zhou ◽  
L. Y. Pan ◽  
M. Wang ◽  
H. R. Chen ◽  
...  
Keyword(s):  
High Activity ◽  
Catalytic Combustion ◽  
Diesel Soot ◽  
Soot Combustion ◽  
Facile Synthesis ◽  
Excellent Activity

Optimized Cu1.5Mn1.5O4 microspheres, possessing abundant Oads and active Cu+–Mn4+ sites for NO2 formation, exhibit excellent activity for soot combustion.

Nepheline from K2CO3/Nanosized Sodalite as a Prospective Candidate for Diesel Soot Combustion

2008 ◽  
Vol 130 (39) ◽  
pp. 12844-12845 ◽  
Author(s):  
Riichiro Kimura ◽  
Junji Wakabayashi ◽  
S. P. Elangovan ◽  
Masaru Ogura ◽  
Tatsuya Okubo
Keyword(s):  
Diesel Soot ◽  
Soot Combustion

Vanadium-Chromium Oxide: Effective Catalysts for Ammoxidation of 3-Picoline

2013 ◽  
Vol 634-638 ◽  
pp. 624-627 ◽  
Author(s):  
Feng Jiang ◽  
Wei Xu ◽  
Lei Niu ◽  
Guo Min Xiao
Keyword(s):  
Raman Spectroscopy ◽  
Catalytic Activity ◽  
Chromium Oxide ◽  
Atmospheric Pressure ◽  
High Selectivity ◽  
Surface Acidity ◽  
N2 Adsorption ◽  
Composite Oxide ◽  
Highly Active

Bulk vanadium-chromium oxide (VCrO) catalyst was prepared and characterized by N2 adsorption, XRD, NH3-TPD, H2-TPR, and Raman spectroscopy. XRD and Raman results showed that the VCrO catalyst was a kind of VV-CrIII composite oxide mainly consisted of crystalline V2O5 and CrVO4-Ⅲ (orthorhombic). NH3-TPD and H2-TPR results revealed that this catalyst had negligible surface acidity, and was easily reduced due to the formation of CrVO4-Ⅲ. Their catalytic activity was evaluated in the ammoxidation of 3-picoline to nicotinonitrile. Catalytic results showed that the bulk VCrO catalyst was highly active and selective; the nicotinonitrile selectivity and yield was up to 96.1%, 88.2% respectively at atmospheric pressure and 360 °C. The high selectivity was related closely to the low surface acidity of the catalyst.

scholarly journals Antibacterial activities of epiroprim, a new dihydrofolate reductase inhibitor, alone and in combination with dapsone.

1996 ◽  
Vol 40 (6) ◽  
pp. 1376-1381 ◽  
Author(s):  
H H Locher ◽  
H Schlunegger ◽  
P G Hartman ◽  
P Angehrn ◽  
R L Then
Keyword(s):  
Dihydrofolate Reductase ◽  
Biological Fluids ◽  
Pneumocystis Carinii ◽  
Antibacterial Activities ◽  
Gram Negative Bacteria ◽  
Highly Active ◽  
Excellent Activity ◽  
Resistant Strains ◽  
Better Than

Epiroprim (EPM; Ro 11-8958) is a new selective inhibitor of microbial dihydrofolate reductase. EPM displayed excellent activity against staphylococci, enterococci, pneumococci, and streptococci which was considerably better than that of trimethoprim (TMP). EPM was also active against TMP-resistant strains, although the MICs were still relatively high. Its combination with dapsone (DDS) was synergistic and showed as in vitro activity superior to that of the TMP combination with sulfamethoxazole (SMZ). The EPM-DDS (ratio, 1:19) combination inhibited more than 90% of all important gram-positive pathogens at a concentration of 2 + 38 micrograms/ml. Only a few highly TMP-resistant staphylococci and enterococci were not inhibited. EPM was also more active than TMP against Moraxella catarrhalis, Neisseria meningitidis, and Bacteroides spp., but it was less active than TMP against all other gram-negative bacteria tested. Atypical mycobacteria were poorly susceptible to EPM, but the combination with DDS was synergistic and active at concentrations most probably achievable in biological fluids (MICs from 0.25 +/- 4.75 to 4 + 76 micrograms/ml). EPM and the EPM-DDS combination were also highly active against experimental staphylococcal infections in a mouse septicemia model. The combination EPM-DDS has previously been shown to exhibit activity in Pneumocystis carinii and Toxoplasma models and, as shown in the present study, also shows good activity against a broad range of bacteria including many strains resistant to TMP and TMP-SMZ.

Cobalt deposited on micro and nanometric structures of ceria and zirconia applied in diesel soot combustion

2020 ◽  
Vol 481 ◽  
pp. 100636 ◽  
Author(s):  
M. Ángeles Stegmayer ◽  
Viviana G. Milt ◽  
Nuria Navascues ◽  
Enrique Gamez ◽  
Silvia Irusta ◽  
...  
Keyword(s):  
Diesel Soot ◽  
Soot Combustion

Heterostructured Copper–Ceria and Iron–Ceria Nanorods: Role of Morphology, Redox, and Acid Properties in Catalytic Diesel Soot Combustion

Langmuir ◽  
2018 ◽  
Vol 34 (8) ◽  
pp. 2663-2673 ◽  
Author(s):  
Putla Sudarsanam ◽  
Brendan Hillary ◽  
Mohamad Hassan Amin ◽  
Nils Rockstroh ◽  
Ursula Bentrup ◽  
...  
Keyword(s):  
Diesel Soot ◽  
Soot Combustion ◽  
Acid Properties ◽  
Redox And Acid Properties
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