Preparation, characterization and catalytic activity studies of CeO2–K diesel soot oxidation catalysts loaded on porous Al2O3 substrate using water-immiscible solvent

2007 ◽  
Vol 8 (11) ◽  
pp. 1675-1680 ◽  
Author(s):  
Yongheng Zhang ◽  
Yuhua Qin ◽  
Xiaoting Zou
Keyword(s):  
Catalytic Activity ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Oxidation Catalysts ◽  
Al2o3 Substrate ◽  
Diesel Soot Oxidation ◽  
Soot Oxidation Catalysts

scholarly journals Improved Hydrothermal Stability in Glass Diesel Soot Oxidation Catalysts

Catalysts ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 684 ◽  
Author(s):  
James Zokoe ◽  
Xiaoxiang Feng ◽  
Changsheng Su ◽  
Paul J. McGinn
Keyword(s):  
Diesel Exhaust ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Hydrothermal Stability ◽  
Free Energies ◽  
Oxidation Catalysts ◽  
Diesel Soot Oxidation ◽  
Hydrothermal Environment ◽  
Field Strengths ◽  
Soot Oxidation Catalysts

The hydrothermal stability of K-Ca-Si-O glass soot oxidation catalysts has been improved by substitution of Ce and Zr for Ca. This work demonstrates that glasses can be tailored to withstand the challenging diesel exhaust hydrothermal environment by considering the field strengths and partial molar free energies of the hydration reactions (ΔGi) of the cation species in the glass. The result is a glass that shows less formation of precipitates after 2 h hydrothermal exposure in air with 7% H2O at temperatures ranging from 300–700 °C. A K-Ca-Si-O glass with a soot T50 (the temperature when 50% of the soot is oxidized) of 394 °C was found to degrade to 468 °C after a 2 h, 700 °C hydrothermal exposure, whereas the improved K-Ce-Zr-Si-O glass only changed from 407 °C to 427 °C after the same treatment.

Synthesis and Catalytic Activity Studies of V/K/Ca and V/Ks/Ce Based Catalysts for Diesel Soot Oxidation

2007 ◽  
Vol 336-338 ◽  
pp. 1995-1998
Author(s):  
Yong Heng Zhang ◽  
Jian Zhong Xue
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Amorphous Phase ◽  
Porous Alumina ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Oxidation Activity ◽  
Diesel Soot Oxidation ◽  
Oxidation Onset Temperature ◽  
Catalyst Systems

The catalysts based on V/K/Ca and V/Ks/Ce systems for diesel soot catalytic oxidation were synthesized onto the porous alumina substrates. Both catalyst systems showed a good catalytic oxidation activity. The V/K/Ca system exhibited the lowest oxidation onset temperature (OOT) of about 359oC with a composition of V/K/Ca =1:1:0.1 where the V and Ca and/or K elements could form a kind of amorphous phase that determined the catalytic activity. The V/Ks/Ce system displayed the lowest OOT of about 350oC with a composition of V/Ks/Ce = 1:2:0.1 where the K2SO4 and K5V2O3(SO4)4 phases could contribute most to the catalytic activity.

Effect of surface and bulk palladium doping on the catalytic activity of La2Sn2O7 pyrochlore oxides for diesel soot oxidation

2018 ◽  
Vol 54 (6) ◽  
pp. 4495-4510 ◽  
Author(s):  
Lijie Ai ◽  
Zhongpeng Wang ◽  
Yibo Gao ◽  
Chenchen Cui ◽  
Baoqin Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Diesel Soot Oxidation ◽  
Palladium Doping ◽  
Pyrochlore Oxides ◽  
Effect Of Surface

Crucial role of titanium dioxide support in soot oxidation catalysis of manganese doped ceria

2017 ◽  
Vol 7 (14) ◽  
pp. 3045-3055 ◽  
Author(s):  
Deboshree Mukherjee ◽  
Perala Venkataswamy ◽  
Damma Devaiah ◽  
Agolu Rangaswamy ◽  
Benjaram M. Reddy
Keyword(s):  
Titanium Dioxide ◽  
Catalytic Activity ◽  
Crucial Role ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Oxidation Catalysis ◽  
Doped Ceria ◽  
Diesel Soot Oxidation

The influence of an anatase-TiO2support on the diesel soot oxidation catalytic activity of manganese doped ceria is investigated.

Highly efficient cerium dioxide nanocube-based catalysts for low temperature diesel soot oxidation: the cooperative effect of cerium- and cobalt-oxides

2015 ◽  
Vol 5 (7) ◽  
pp. 3496-3500 ◽  
Author(s):  
Putla Sudarsanam ◽  
Brendan Hillary ◽  
Dumbre K. Deepa ◽  
Mohamad Hassan Amin ◽  
Baithy Mallesham ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Cerium Dioxide ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Cooperative Effect ◽  
Cobalt Oxides ◽  
Highly Efficient ◽  
Diesel Soot Oxidation

Co3O4 promoted CeO2 nanocubes exhibit a remarkable catalytic activity for soot oxidation, attributed to the superior reducible nature of CeO2 and the preferential exposure of CeO2 (100) and Co3O4 (110) facets.

The catalytic activity of CuO–CeO2 mixed oxides for diesel soot oxidation with a NO/O2 mixture

2007 ◽  
Vol 8 (12) ◽  
pp. 2110-2114 ◽  
Author(s):  
Xiaodong Wu ◽  
Qing Liang ◽  
Duan Weng ◽  
Zhenxiang Lu
Keyword(s):  
Catalytic Activity ◽  
Mixed Oxides ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Diesel Soot Oxidation

scholarly journals Catalytic Activity and Stability of K/CeO2 Catalysts for Diesel Soot Oxidation

2012 ◽  
Vol 33 (4-6) ◽  
pp. 970-976 ◽  
Author(s):  
Wenjuan SHAN ◽  
Lihua YANG ◽  
Na MA ◽  
Jiali YANG
Keyword(s):  
Catalytic Activity ◽  
Soot Oxidation ◽  
Diesel Soot ◽  
Diesel Soot Oxidation
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