Low temperature catalytic combustion of chlorobenzene over cobalt based mixed oxides derived from layered double hydroxides

Deng, Wei; Tang, Qianxi; Huang, Shushu; Zhang, Long; Jia, Ziye; Guo, Limin

doi:10.1016/j.apcatb.2020.119336

Cited by 99 publications

(39 citation statements)

References 60 publications

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“…37 This broad peak is attributed to the desorption of surface active oxygen species. 32 This peak (centered at 446 1C) was hardly observed in other samples. It can be reasonably speculated that the L 0.82 S 0.18 C sample has stronger oxygen mobility than the other samples, which is beneficial for the complete oxidation of toluene.…”

Section: Redox Properties and Oxygen Mobilitymentioning

confidence: 85%

“…The reduction peak at 427 1C was attributed to the reduction of Co 3+ to Co 2+ and the reduction of surface adsorbed oxygen species, 30,31 and the reduction peak at 606 1C belongs to Co 2+ reduction to Co and the reduction of the lattice oxygen species. 25,32 Interestingly, with the increase of the doped amount of Sr in the LaCoO 3 perovskite, the reduction peak shifts to a low temperature. This phenomenon illustrates the improvement of oxygen mobility.…”

Section: Redox Properties and Oxygen Mobilitymentioning

confidence: 99%

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Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts

Liu

Yang

Tian

et al. 2022

Phys. Chem. Chem. Phys.

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Section: Redox Properties and Oxygen Mobilitymentioning

confidence: 85%

Section: Redox Properties and Oxygen Mobilitymentioning

confidence: 99%

Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts

Liu

Yang

Tian

et al. 2022

Phys. Chem. Chem. Phys.

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“…2 show the relationship between conversion ratio and catalytic temperature for benzene over CuMn 2 /Y-Zeolite, CuMn 2 /SiO 2 , CuMn 2 /γ-Al 2 O 3 , and CuMn 2 /TiO 2 catalysts, the conversion T 10 , T 90 as well as oxidation temperature range of benzene. 40,41 The conversion ratio of low concentration benzene over CuMn 2 /SiO 2 , CuMn 2 /Y-Zeolite, CuMn 2 /γ-Al 2 O 3 , and CuMn 2 /TiO 2 decreases in turn, which is illustrated in Figure 3 and Table 2. The catalytic activity of CuMn 2 / Y-Zeolite for benzene is better than that of CuMn 2 /SiO 2 catalyst in high temperature region and benzene conversion over both of them can reach about 90% before 300 C, while CuMn 2 /TiO 2 catalyst needs more than 350 C to achieve the same conversion.…”

Section: Catalyst Characterizationmentioning

confidence: 95%

“…Figure3and Table2show the relationship between conversion ratio and catalytic temperature for benzene over CuMn 2 /Y-Zeolite, CuMn 2 /SiO 2 , CuMn 2 /γ-Al 2 O 3 , and CuMn 2 /TiO 2 catalysts, the conversion T 10 , T 90 as well as oxidation temperature range of benzene 40,41. …”

mentioning

confidence: 99%

Experimental study of volatile organic compounds catalytic combustion on Cu‐Mn catalysts with different carriers

et al. 2021

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Catalytic combustion is an effective way for volatile organic compounds harmless treatment. In this paper, the synergism between non-noble metal active phase Cu-Mn and Y-zeolite, SiO 2 , γ-Al 2 O 3 , and TiO 2 was studied by catalytic combustion experiments and corresponding characterizations; the conclusions as following: Cu-Mn/SiO 2 has the best activity and stability, T 10 and T 90 are 210 C and 298 C, respectively. Benzene can be completely oxidized below 300 C, which is due to the formation of substantial Cu-Mn solid solutions and a large number of Cu 2+ /Mn 3+ ions on the surface of SiO 2 . The activation energy of C 6 H 6 in CuMn 2 /TiO 2 is 95.50 kJ/mol, while that of the other three catalysts is close, probably 60 kJ/mol. Moreover, the stability of SiO 2 is the highest and can be maintained for more than 60 hours. The fundamental reason of catalyst deactivation is the higher diffusion resistance on the surface of the catalyst with small pore size distribution and the lack of surface oxygen, which leads to the lower degree of complete oxidation of C 6 H 6 .

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“…Due to the low activity of the support, only the proportion, type and loading method of the active component can be improved, which limits the improvement of catalyst performance in the catalytic combustion of VOCs. In recent years, some researchers have found that using active supports can further promote the performance of catalysts [ 22 , 23 , 24 , 25 ]. For example, Jablonska et al synthesized a new HY zeolite that can completely catalyze methanol combustion at 500 °C.…”

Section: Introductionmentioning

confidence: 99%

Effect of Particle Size and Crystal Surface of CeO2 on the Catalytic Combustion of Benzene

et al. 2020

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In this study, three kinds of CeO2 were synthesized, and supported PdOx (x = 0,1) catalysts were prepared for benzene catalytic combustion. The samples were characterized by XRD, N2 adsorption/desorption, HRTEM, XPS and H2-TPR. The results show that three kinds of CeO2 with different structures can be formed by different preparation methods. This is mainly reflected in the differences in pore structure, particle size and crystal plane. CeO2-DC obtained from directly calcined Ce(NO3)3·6H2O had the largest pore volume and pore diameter and smallest particle size. CeO2-DC was mainly exposed to the (200) plane. Combined with the results of the ability test, it could be concluded that when Pd2+ and Pd0 exist at the same time, the activity increases with an increase in the proportion of Pd2+. Meanwhile, the structure of CeO2 affects the formation of oxygen vacancies, thereby affecting the adsorption and degradation of benzene. This article reveals that the particle size, crystal planes, oxygen vacancies and proportion of Pd2+ have a great impact on the catalytic combustion of benzene and allow a more comprehensive understanding of the structure–activity relationship, which can guide us to design high-efficiency catalysts targeted to obtain suitable CeO2-based catalysts for the catalytic combustion of benzene.

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Low temperature catalytic combustion of chlorobenzene over cobalt based mixed oxides derived from layered double hydroxides

Cited by 99 publications

References 60 publications

Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts

Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts

Experimental study of volatile organic compounds catalytic combustion on Cu‐Mn catalysts with different carriers

Effect of Particle Size and Crystal Surface of CeO2 on the Catalytic Combustion of Benzene

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Low temperature catalytic combustion of chlorobenzene over cobalt based mixed oxides derived from layered double hydroxides

Cited by 99 publications

References 60 publications

Insights into the role of strontium in catalytic combustion of toluene over La1−xSrxCoO3 perovskite catalysts

Insights into the role of strontium in catalytic combustion of toluene over La1−xSrxCoO3 perovskite catalysts

Experimental study of volatile organic compounds catalytic combustion on Cu‐Mn catalysts with different carriers

Effect of Particle Size and Crystal Surface of CeO2 on the Catalytic Combustion of Benzene

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Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts

Insights into the role of strontium in catalytic combustion of toluene over La_1−xSr_xCoO₃ perovskite catalysts