Excellent low temperature performance for total benzene oxidation over mesoporous CoMnAl composited oxides from hydrotalcites

2016 ◽  
Vol 4 (21) ◽  
pp. 8113-8122 ◽  
Author(s):  
Shengpeng Mo ◽  
Shuangde Li ◽  
Wenhui Li ◽  
Jiaqi Li ◽  
Jiayuan Chen ◽  
...  
Keyword(s):  
Low Temperature ◽  
Synergistic Effect ◽  
Metal Oxides ◽  
Catalytic Reaction ◽  
Benzene Oxidation ◽  
Mixed Metal Oxides ◽  
Redox Mechanism ◽  
Mixed Metal ◽  
Temperature Performance ◽  
Low Temperature Performance

The synergistic effect between cobalt and manganese over mesoporous CoMnAl mixed metal oxides catalysts is critical to the catalytic reaction due to a redox mechanism: Co3+–Mn3+ ↔ Co2+–Mn4+.

Novel Fe–Mn–Zn–Ti–O mixed-metal oxides for the low-temperature removal of H2S from gas streams in the presence of H2, CO2, and H2O

2005 ◽  
Vol 236 (2) ◽  
pp. 205-220 ◽  
Author(s):  
K POLYCHRONOPOULOU ◽  
F CABELLOGALISTEO ◽  
M LOPEZGRANADOS ◽  
J FIERRO ◽  
T BAKAS ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxides ◽  
Mixed Metal Oxides ◽  
Mixed Metal ◽  
Gas Streams

scholarly journals Catalytic Oxidation of Ammonia over Cerium-Modified Copper Aluminium Zinc Mixed Oxides

Materials ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6581
Author(s):  
Sylwia Górecka ◽  
Kateřina Pacultová ◽  
Dagmar Fridrichová ◽  
Kamil Górecki ◽  
Tereza Bílková ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxides ◽  
Catalytic Oxidation ◽  
Catalytic Efficiency ◽  
Composition Analysis ◽  
High Catalytic Activity ◽  
Mixed Metal Oxides ◽  
Mixed Metal ◽  
Selective Catalytic Oxidation ◽  
Oxidation Of Ammonia

Copper-containing mixed metal oxides are one of the most promising catalysts of selective catalytic oxidation of ammonia. These materials are characterized by high catalytic efficiency; however, process selectivity to dinitrogen is still an open challenge. The set of Cu-Zn-Al-O and Ce/Cu-Zn-Al-O mixed metal oxides were tested as catalysts of selective catalytic oxidation of ammonia. At the low-temperature range, from 250 °C up to 350 °C, materials show high catalytic activity and relatively high selectivity to dinitrogen. Samples with the highest Cu loading 12 and 15 mol.% of total cation content were found to be the most active materials. Additional sample modification by wet impregnation of cerium (8 wt.%) improves catalytic efficiency, especially N2 selectivity. The comparison of catalytic tests with results of physicochemical characterization allows connecting the catalysts efficiency with the form and distribution of CuO on the samples’ surface. The bulk-like well-developed phases were associated with sample activity, while the dispersed CuO phases with dinitrogen selectivity. Material characterization included phase composition analysis (X-ray powder diffraction, UV-Vis diffuse reflectance spectroscopy), determination of textural properties (low-temperature N2 sorption, scanning electron microscopy) and sample reducibility analysis (H2 temperature-programmed reduction).

Research on Performance of the Modified Asphalt by Diatomite-Cellulose Composite

2010 ◽  
Vol 158 ◽  
pp. 211-218 ◽  
Author(s):  
Yong Sheng Sun ◽  
Xiao Long Chen ◽  
Yue Xin Han ◽  
Bin Zhang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Synergistic Effect ◽  
Ash Content ◽  
Modified Asphalt ◽  
Temperature Performance ◽  
Low Temperature Performance ◽  
Temperature Susceptibility ◽  
Cellulose Composite ◽  
Better Than

The diatomite-cellulose composite (DCC) was used to modified asphalt for pavement in the study, and then the high temperature performance, low temperature performance and temperature susceptibility of asphalt were studied. The results showed that these performances of asphalt were all improved after modified by DCC, and the performance of modified asphalt significantly associated with the ash content of DCC, and H-3 DCC was the best. The performance of modified asphalt by DCC was obviously better than using diatomite and cellulose directly. The improving properties of modified asphalt by DCC were caused by synergistic effect of diatomite and cellulose.

Cu–Zn–Al mixed metal oxides derived from hydroxycarbonate precursors for H2S removal at low temperature

2010 ◽  
Vol 256 (10) ◽  
pp. 3216-3223 ◽  
Author(s):  
Dahao Jiang ◽  
Lianghu Su ◽  
Lei Ma ◽  
Nan Yao ◽  
Xiaoliang Xu ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Oxides ◽  
Mixed Metal Oxides ◽  
H2s Removal ◽  
Mixed Metal

Catalytic lignin valorization over HSZ-supported CuNiAl-based catalysts with microwave heating

2021 ◽  
Author(s):  
Peng Liu ◽  
Changzhou Chen ◽  
Minghao Zhou ◽  
Haihong Xia ◽  
Jing Li ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Metal Oxides ◽  
Microwave Heating ◽  
Mixed Metal Oxides ◽  
Lignin Valorization ◽  
Mixed Metal ◽  
Microwave Assisted ◽  
The Difference ◽  
Lignin Depolymerization

Microwave assisted lignin depolymerization was investigated over HSZ-supported CuNiAl based catalysts. The synergistic effect between acidic HSZ support and mixed metal oxides were studied in detail, to explore the difference...

Low-temperature CO2 reforming of methane over Ni supported on ZnAl mixed metal oxides

2017 ◽  
Vol 42 (15) ◽  
pp. 9831-9839 ◽  
Author(s):  
Sergey Sokolov ◽  
Jörg Radnik ◽  
Matthias Schneider ◽  
Uwe Rodemerck
Keyword(s):  
Low Temperature ◽  
Metal Oxides ◽  
Mixed Metal Oxides ◽  
Co2 Reforming ◽  
Mixed Metal ◽  
Co2 Reforming Of Methane

Novel Zn–Ti-based mixed metal oxides for low-temperature adsorption of H2S from industrial gas streams

2005 ◽  
Vol 57 (2) ◽  
pp. 125-137 ◽  
Author(s):  
K. Polychronopoulou ◽  
J.L.G. Fierro ◽  
A.M. Efstathiou
Keyword(s):  
Low Temperature ◽  
Metal Oxides ◽  
Mixed Metal Oxides ◽  
Mixed Metal ◽  
Gas Streams
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