Study on spinel - typed catalyst NiCo2O4 for total oxidation of toluene

2021 ◽  
Vol 10 (4) ◽  
pp. 97-102
Author(s):  
Nhung Nguyen Hong ◽  
Hung Khong Manh ◽  
Thang Le Minh ◽  
Phuong Pham Thi Mai ◽  
Nam Chu Thi Hai
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sol Gel ◽  
Total Oxidation ◽  
Gel Method ◽  
Sol Gel Method ◽  
Volatile Organic ◽  
Epr Experiments

Toluene is a component of volatile organic compounds which need to be converted into non-poisonous one. Thus, we study the spinel-typed catalyst as NiCo2O4 for total oxidation of toluene because the advantage of spinel catalyst is multi- defective. Based on the sol-gel method, the catalysts NiCo2O4 were successfully prepared with different ratios of Ni/Co. The characteristic properties of catalysts were evaluated by XRD, BET, H2-TPR and EPR experiments. Amongst these ratios, the catalyst with ratio Ni/Co as 0.5 had the best activity in the total oxidation of toluene, as 100% conversion reached at 250 oC.

scholarly journals Selectivity of Tungsten Oxide Synthesized by Sol-Gel Method Towards Some Volatile Organic Compounds and Gaseous Materials in a Broad Range of Temperatures

Materials ◽  
2020 ◽  
Vol 13 (3) ◽  
pp. 523 ◽  
Author(s):  
Simonas Ramanavičius ◽  
Milda Petrulevičienė ◽  
Jurga Juodkazytė ◽  
Asta Grigucevičienė ◽  
Arūnas Ramanavičius
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Sol Gel ◽  
Temperature Dependent ◽  
Sensing Systems ◽  
Sensing Material ◽  
Operational Temperature ◽  
Volatile Organic ◽  
Different Gases

In this research, the investigation of sensing properties of non-stoichiometric WO3 (WO3−x) film towards some volatile organic compounds (VOC) (namely: Methanol, ethanol, isopropanol, acetone) and ammonia gas are reported. Sensors were tested at several temperatures within the interval ranging from a relatively low temperature of 60 up to 270 °C. Significant variation of selectivity, which depended on the operational temperature of sensor, was observed. Here, the reported WO3/WO3–x-based sensing material opens an avenue for the design of sensors with temperature-dependent sensitivity, which can be applied in the design of new gas- and/or VOC-sensing systems that are dedicated for the determination of particular gas- and/or VOC-based analyte concentration in the mixture of different gases and/or VOCs, using multivariate analysis of variance (MANOVA).

Influence of Preparation Methods of TiO2 Nano-Particle on Photodegradation of Methylene Blue

2020 ◽  
Vol 998 ◽  
pp. 84-89
Author(s):  
Jittinat Sirichokthanasarp ◽  
Dang Trung Tri Trinh ◽  
Du Ang Dao Channei ◽  
Kantapat Chansaenpak ◽  
Wilawan Khanitchaidecha ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Hydrothermal Method ◽  
Organic Compounds ◽  
High Efficiency ◽  
Anatase Phase ◽  
Sol Gel ◽  
Nano Particles ◽  
Preparation Methods ◽  
Gel Method ◽  
Sol Gel Method

The dye-pigments and organic compounds are known as significant pollutants in wastewater of textile industrial. Among of treatment technologies, the photocatalysis using TiO2 nano particles has potential on-site process for removing the dye-pigments and organic compounds, due to no hazardous waste and inexpensive. In this work, the TiO2 nanoparticles were synthesized by two different methods of hydrothermal and sol-gel. Nanoparticle of TiO2 synthesized by hydrothermal method contained pure anatase phase as similar as the TiO2 nanoparticles synthesized by sol-gel method. However, the TiO2 synthesized by hydrothermal method provided the higher specific surface area and pore volume rather than the another TiO2. Further, the high efficiency 86% of methylene blue photodegradation was observed during the by using TiO2 synthesized by hydrothermal method as photocatalyst, whereas the efficiency was only 72% for TiO2 synthesized by sol-gel method.

Fibrous MnO2 Nanoparticles with (2 × 2) Tunnel Structures. Catalytic Activity in the Total Oxidation of Volatile Organic Compounds

2009 ◽  
Vol 9 (6) ◽  
pp. 3837-3842 ◽  
Author(s):  
M. I. Domínguez ◽  
P. Navarro ◽  
F. Romero-Sarria ◽  
D. Frías ◽  
S. A. Cruz ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Total Oxidation ◽  
Volatile Organic

Co–Mg–Al oxides issued of hydrotalcite precursors for total oxidation of volatile organic compounds. Identification and toxicological impact of the by-products

2010 ◽  
Vol 13 (5) ◽  
pp. 494-501 ◽  
Author(s):  
Cédric Gennequin ◽  
Serge Kouassi ◽  
Lucette Tidahy ◽  
Renaud Cousin ◽  
Jean-François Lamonier ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Total Oxidation ◽  
Volatile Organic ◽  
By Products

Total oxidation of volatile organic compounds on Au/Ce–Ti–O and Au/Ce–Ti–Zr–O mesoporous catalysts

2009 ◽  
Vol 44 (24) ◽  
pp. 6654-6662 ◽  
Author(s):  
C. Gennequin ◽  
M. Lamallem ◽  
R. Cousin ◽  
S. Siffert ◽  
V. Idakiev ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Total Oxidation ◽  
Mesoporous Catalysts ◽  
Volatile Organic

A comparative study of Cu, Ag and Au doped CeO 2 in the total oxidation of volatile organic compounds (VOCs)

2016 ◽  
Vol 177 ◽  
pp. 570-576 ◽  
Author(s):  
Antoine Aboukaïs ◽  
Mira Skaf ◽  
Sara Hany ◽  
Renaud Cousin ◽  
Samer Aouad ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Comparative Study ◽  
Organic Compounds ◽  
Total Oxidation ◽  
Volatile Organic
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