Co3O4/CeO2 composite oxides for methane emissions abatement: Relationship between Co3O4–CeO2 interaction and catalytic activity

2006 ◽  
Vol 66 (3-4) ◽  
pp. 217-227 ◽  
Author(s):  
L.F. Liotta ◽  
G. Di Carlo ◽  
G. Pantaleo ◽  
A.M. Venezia ◽  
G. Deganello
Keyword(s):  
Catalytic Activity ◽  
Methane Emissions ◽  
Composite Oxides

Impact of acidity in ZrO2-TiO2-Al2O3 composite oxides on the catalytic activity and coking behaviors during n-decane cracking

Fuel ◽  
2018 ◽  
Vol 233 ◽  
pp. 724-731 ◽  
Author(s):  
Yi Jiao ◽  
Hua Zhang ◽  
Shanshan Li ◽  
Caihong Guo ◽  
Peng Yao ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Composite Oxides ◽  
Al2o3 Composite

A study on the catalytic oxidation of soot by Sn–Ce composite oxides: adsorbed oxygen and defect sites synergistically enhance catalytic activity

2019 ◽  
Vol 43 (44) ◽  
pp. 17423-17432
Author(s):  
Dengtai Wang ◽  
Changsen Zhang ◽  
Yunyun Xie ◽  
Zeyou Pan ◽  
Xiangfei Xue ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Adsorbed Oxygen ◽  
Reaction Paths ◽  
Composite Oxides ◽  
Defect Sites

Two reaction paths in the presence of a Sn–Ce catalyst with H2O (path 1) and without H2O (path 2).

scholarly journals Preparation of Ce–Mn Composite Oxides with Enhanced Catalytic Activity for Removal of Benzene through Oxalate Method

Nanomaterials ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 197 ◽  
Author(s):  
Min Yang ◽  
Genli Shen ◽  
Mi Liu ◽  
Yunfa Chen ◽  
Zhen Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Property ◽  
Catalytic Properties ◽  
Synergistic Interaction ◽  
Benzene Oxidation ◽  
Oxygen Species ◽  
Pure Ceo2 ◽  
Catalytic Activities ◽  
Composite Oxides ◽  
Better Than

The catalytic activities of CeO2-MnOx composite oxides synthesized through oxalate method were researched. The results exhibited that the catalytic properties of CeO2-MnOx composite oxides were higher than pure CeO2 or MnOx. When the Ceat/Mnat ratio was 3:7, the catalytic activity reached the best. In addition, the activities of CeO2-MnOx synthesized through different routes over benzene oxidation were also comparative researched. The result indicated that the catalytic property of sample prepared by oxalate method was better than others, which maybe closely related with their meso-structures. Meanwhile, the effects of synergistic interaction and oxygen species in the samples on the catalytic ability can’t be ignored.

Methanation of carbon monoxide on ordered mesoporous NiO–TiO2–Al2O3 composite oxides

RSC Advances ◽  
2016 ◽  
Vol 6 (25) ◽  
pp. 20971-20978 ◽  
Author(s):  
Qing Liu ◽  
Yuanyu Tian ◽  
Hongmei Ai
Keyword(s):  
Carbon Monoxide ◽  
Catalytic Activity ◽  
Confinement Effect ◽  
High Catalytic Activity ◽  
Composite Oxides ◽  
Al2o3 Composite ◽  
Ordered Mesoporous

An ordered mesoporous NiO–TiO2–Al2O3 catalyst can simultaneously exhibit high catalytic activity and stability, due to the confinement effect of the mesopore channels and the incorporation of the TiO2 species.

Mn-Cu and Mn-Ce Composite Oxides for Decolouration of Acid Red 186 Solutions by CWO

2007 ◽  
Vol 5 (1) ◽  
Author(s):  
Isabel M. L. Castelo-Branco ◽  
Rosa M. Quinta-Ferreira
Keyword(s):  
Catalytic Activity ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Catalytic Oxidation ◽  
Manganese Oxides ◽  
Heterogeneous Catalysts ◽  
Copper Oxides ◽  
Catalyst Stability ◽  
Composite Oxides ◽  
Dye Solutions

Decolouration by catalytic oxidation of Acid Red 186 dye solutions was investigated using several manganese-based heterogeneous catalysts, namely MnOx (manganese oxides), Mn-Cu and Mn-Ce composite oxides. Also, catalytic activity of CeO2 and CuOx (copper oxides) were tested. Catalysts were used in slurry conditions, at 130ºC and oxygen partial pressure of 15 bar. Additional uncatalysed run and thermolysis (no catalyst, no oxygen) were studied. The results revealed that MnOx and Mn-Cu were the most active catalysts concerning the reduction of colour. MnCu5 and CuOx led to the highest TOC decreases. From the overall process (colour and TOC reductions) and having in consideration catalyst stability, MnCu5 was considered suitable to AR186 oxidation.

Effect of dispersed ZnO in Cu–Zn composite oxides on catalytic activity of anisole acetylation

2020 ◽  
Vol 44 (25) ◽  
pp. 10492-10499
Author(s):  
Yanqiu Chen ◽  
Yue Yang ◽  
Zhou Zhou ◽  
Wei Luo ◽  
Junhua Liu ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Oxide Catalysts ◽  
Precipitation Method ◽  
Composite Oxide ◽  
Composite Oxides ◽  
Co Precipitation

Cu–Zn composite oxide catalysts were prepared by a co-precipitation method and used in the anisole acetylation reaction.

Study on Photocatalytic Degradation of MG by PW12-TiO2/SiO2

2014 ◽  
Vol 675-677 ◽  
pp. 448-454
Author(s):  
Xi Quan Wang ◽  
Qi Zhe Yang ◽  
Shi Ying Fan ◽  
Yuan Li
Keyword(s):  
Aqueous Solution ◽  
Photocatalytic Activity ◽  
Catalytic Activity ◽  
Photocatalytic Degradation ◽  
Photocatalytic Oxidation ◽  
Phosphotungstic Acid ◽  
Anatase Phase ◽  
Sol Gel ◽  
High Catalytic Activity ◽  
Composite Oxides

To investigate the photocatalytic degradation of MG by PW12-TiO2/SiO2, in this study PW12-TiO2/SiO2 composite oxides were prepared by sol-gel and hydrothermal strategy. The prepared photocatalysits were characterized by XRD, BET,TEM and EDS techniques and the configuration charateristics of PW12-TiO2/SiO2 nanoparticles were systematically investigated. Photocatalytic activity was checked by the photocatalytic oxidation of MG dye in aqueous solution. The results showed that the phosphotungstic acid still has the Keggin structure. The anatase phase of titanium oxid is identified by XRD. The result of the present work implied that compared with pure TiO2, the PW12-TiO2/SiO2 composite oxides have stronger catalytic activity, good particles dispersion and bigger specific surface area. The optimal concentration of MG was 20mg.L-1, the best dosage of PW12-TiO2/SiO2 was 1g.L-1. Moreover, after three times of recycling, the catalyst still has high catalytic activity.

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