Catalytic oxidation of dichloromethane and toluene over platinum alumite catalyst

Catalytic combustion of an organic compound is characterized by an S-shaped curve for the temperature dependence of the reaction. Expression of this S-shaped curve with a mathematical function would allow highly accurate analysis based on a small number of data points. This study used toluene combustion over a γ-alumina-supported platinum catalyst as an example of a catalytic combustion reaction, and investigated whether the temperature dependence of the toluene conversion could be expressed by a logistic function. The parameters were obtained from the reaction data using a single regression analysis. The logistic function well represented the experimental data using the linear relationship as the function of temperature. Furthermore, the temperature at which the toluene conversion reaches 50 % can be objectively determined.

Catalytic combustion

Logistic function

10.1627/jpi.64.340

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Ag-Doped δ-MnO₂ Nanosheets as Robust Catalysts for Toluene Combustion

ACS Applied Nano Materials (2020)

Long Zhang Simin Zhu Renzhu Li Wei Deng Chol Hong

Ag-doped δ-MnO2 catalysts were synthesized using an alcohol-initiated redox precipitation method at room temperature; toluene was used as a probe molecule of volatile organic compounds (VOCs) to evaluate the catalytic activity of the as-prepared catalyst. The catalytic activity evaluation revealed that the activity for catalytic combustion of toluene was much enhanced by Ag doping. The optimized catalyst (1Ag-MnO2) presented the best catalytic activity for toluene combustion, with the conversion of toluene corresponding to 50% (T50) and 90% (T90) at just 182 and 190 °C under testing conditions, respectively. In addition, 1Ag-MnO2 exhibited excellent long-term stability and water resistance. A series of techniques were used to characterize the as-prepared catalysts, and the characterizations demonstrated that the enhanced catalytic performance of Ag-MnO2 catalysts was closely associated with the much-increased active oxygen species content generated by Ag doping. Therefore, the alcohol-initiated redox precipitation method is a versatile process to prepare Ag-doped MnO2 catalysts, and the as-prepared Ag-doped MnO2 catalyst is a robust material for the abatement of toluene.

Catalytic combustion

10.1021/acsanm.0c02444

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Citations (61)

The improved activity of Co3O4 nanorods using silver in the catalytic oxidation of toluene

Environmental Science and Pollution Research (2021)

Tao Li Jinxian Zhao Yanhong Quan Dongmou Luo Chao Miao

Nanorod

Space velocity

Catalytic Oxidation

10.1007/s11356-021-13351-5

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Citations (9)

Catalytic removal of toluene using MnO2-based catalysts: A review

Chemosphere (2023)

Pijun Gong Feng He Junlin Xie De Fang

Catalytic Oxidation

10.1016/j.chemosphere.2023.137938

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Citations (46)

Ce/Cu_(0.5) Mn_(0.5)/SBA-15 Catalyst and Its Catalytic Performance for Toluene Combustion

Journal of Ningxia Teachers University (2011)

Zhang Guanghong

The Ce/Cu0.5Mn0.5/SBA-15 catalysts supported by mesoporous molecular sieve SBA-15 were prepared by means of impregnation.The structure and the surface properties of catalysts were characterized by XRD and TPR methods.They were tested for catalytic properties of toluene's combustion in atmospheric fixed-bed reactor.It was found that they all maintain characteristic of mesoporous molecular sieve SBA-15.The active catalysis component Cu and Mn existed respectively as CuO and MnO2.When the Catalytic additive CeO2 was added in maintaining the active component Cu and Mn was highly dispersed and displayed higher catalytic properties.The best result of toluene's entire combustion at 480℃ could be attained with 12%Cu0.5Mn0.5 and 3.5% Ce.If toluene density is high and air speed is fast,the toluene conversion will become low.

Catalytic combustion

Source

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Catalytic oxidation of dichloromethane and toluene over platinum alumite catalyst

Journal of Hazardous Materials (2007)

Lifeng Wang Makoto Sakurai Hideo Kameyama

Dichloromethane

Catalytic combustion

Catalytic Oxidation

10.1016/j.jhazmat.2007.10.036

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Citations (68)

Combustion of Toluene over Titanium(IV) Oxide Catalyst

Journal of the Japan Petroleum Institute (2007)

Byonggu An Sachiko Kaida Tohru Miyake Tohru Tani Itsushi Kashimoto

Combustion catalysts free from precious metals, such as platinum, for removal of volatile organic compounds were investigated. Common metal oxides (titanium(IV) oxide (TiO2), alumina and silica) were selected as candidates for a catalyst for combustion of toluene at low concentrations. Complete conversion of toluene was not achieved even at 500°C without catalysts, although the ignition point of toluene is 480°C. TiO2 exhibited the highest activity for combustion of toluene among representative metal oxides. Toluene was almost quantitatively converted to carbon dioxide (>99% yield) over TiO2 under the condition of appropriate contact time at 500°C.

Catalytic combustion

Titanium oxide

Titanium Dioxide

10.1627/jpi.50.283

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Citations (2)

Effect of CeO2 morphologies on toluene catalytic combustion

Catalysis Today (2018)

Zhentao Feng Quanming Ren Ruosi Peng Shengpeng Mo Mingyuan Zhang

Catalytic combustion

Degradation

Reusability