Promoting effect of the addition of Ce and Fe on manganese oxide catalyst for 1,2-dichlorobenzene catalytic combustion

Tang, Aidong; Hu, Liqin; Yang, Xuehua; Jia, Yanrong; Zhang, Yi

doi:10.1016/j.catcom.2016.04.015

Cited by 47 publications

(16 citation statements)

References 35 publications

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“…[924][925][926] The catalytic incineration of o-DCB is largely centred on V-, Fe-, Ti-and Mn-based oxides. [927][928][929][930][931] The catalytic oxidation of o-DCB was systematically investigated over a series of transition metal oxides (Cr2O3, V2O5, MoO3, Fe2O3 and Co3O4) supported on TiO2 and Al2O3. The results suggested that the TiO2-supported catalysts are more active than the corresponding Al2O3-supported ones (except Co oxide catalysts), indicating that the metal oxide-support interactions are significant in this reaction.…”

Section: 2-dichlorobenzenementioning

confidence: 99%

“…The results revealed that the catalyst with a Co : Mn ratio of 9 : 1 presents the highest activity (T90 = 347 °C; GHSV of 15,000 h -1 ) and good stability which was ascribed to the synergetic effect between the activation of o-DCB on Co 2+ sites and subsequent oxidation by surface active oxygen in Co3O4 nanoparticles. Recently, Zhang and co-workers 931 reported that addition of Ce or Ce+Fe into MnOx oxides promoted the formation of an amorphous powder rather than a crystalline material which enhanced their specific surface area and redox property, leading to an overall higher activity for o-DCB incineration.…”

Section: 2-dichlorobenzenementioning

confidence: 99%

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Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources

et al. 2019

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Section: 2-dichlorobenzenementioning

confidence: 99%

Section: 2-dichlorobenzenementioning

confidence: 99%

Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources

et al. 2019

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“…Based on the contribution of Ce 3+ features to the spectrum, the ratios of Ce 3+ /Ce 4+ of CuCexMn1-xO4/Crd catalysts with the Ce/Mn molar ratios at 1/7, 1/3, 1 and the calcining temperature at 350 o C, 450 o C, 550 o C for 4h were 31.0%, 25.8%, 26.4%, 25.0%, 25.2% and 24.2%, respectively. The highest Ce 3+ content created more oxygen vacancies in CuCe0.25Mn1.75O4/Crd, probably owing to the strong interplay between Ce and Mn [50] . Simultaneously, these oxygen vacancies were identified as active centers, this is due to theses oxygen in the defective oxides devotes to be transferred and released.…”

Section: Xps Analysismentioning

confidence: 99%

Improved Activity and Stability of Chlorobenzene Oxidation Over Transition Metal-Substituted Spinel-Type Catalysts Supported on Cordierite

Huang

Zhang

et al. 2021

Catal Lett

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Industrial catalysts usually encounter great challenges in Cl• deactivation, toxic by-products generation, and stability with a long running operation for catalytic oxidation of chlorinated volatile organic compounds (CVOCs). In this research, spinel-type oxides with transition metal substituted as active oxides supported on cordierite (Crd) was identified to catalytic degradation of chlorobenzene (CB). The Cu1.4Mn1.6O4 spinel-type oxides considered as the main active oxides have been identified, which were confirmed by XRD and TEM. The activities of these CuMxMn2-xO4 catalysts were markedly improved by lower calcining temperature and shorter time. CuCe0.25Mn1.75O4/Crd catalyst displayed the highest activity and good stability due to that CeO2 nano-rods structure conducive to increase the Oads amount, the dispersion of active oxides, the strength of weak acidity, the surface areas and pore volume. Moreover, spinel-type with CeO2 doping exhibited high performance in CVOCs elimination attributed to the high storage capacity of oxygen, plentiful oxygen vacancies, good efficiency in breaking C-Cl bond and the easy shuttles between Ce 3+ and Ce 4+ , which were demonstrated by XPS. The results indicate that CeO2, Oads, and •OH have beneficial effects on the removing Cl• into benzene, and then improving the ring-opening of CB for CB degradation.

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“…3 In particular, the manganese oxides have been well studied in VOC combustion due to the chemical characteristic of manganese to the structure of multivalent oxides and their important ability to collect bulk oxygen. [4][5][6][7][8] The formation of MnO x species has shown high performance in the total combustion of different model organic molecules including o-xylene, 9 methane, 10 ethyl methyl ketone, 11,12 1,2-dichlorobenzene, 13 n-hexane, 14 toluene 15,16 and ethanol, 17 among others.…”

Section: Introductionmentioning

confidence: 99%

CeαMn1-αO2 CATALYSTS SUPPORTED OVER g-Al2O3 PREPARED BY MODIFIED REDOX-COPRECIPITATION METHODS FOR n-HEXANE COMBUSTION

et al. 2020

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A series of Ce α Mn 1-α O 2 catalysts supported on g-alumina with various molar concentrations of Ce (α, from 0 to 0.90) was synthesized by coprecipitation, applying two different precipitating agents, namely, sodium hydroxide (method 1) and sodium carbonate (method 2), with the use of sodium permanganate as a redox agent for precipitation. XRD profiles of the supported samples revealed the predominant abundance of a typical fluorite crystalline structure. TPR thermograms of supported samples were displaced towards lower temperatures with increasing Mn concentration, in contrast with the bulk samples. The supported Ce-Mn samples exhibited a greater performance in n-hexane elimination than did the corresponding simple oxides. The sample Ce 0.33 Mn 0.67 O 2 obtained by method 2 presented the best activity, probably due to the enrichment of Ce 4+ , Mn 3+ and Mn 4+ surface species, an excess of superficial oxygen species and an easy reducibility as well as the lowest apparent activation energy.

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Promoting effect of the addition of Ce and Fe on manganese oxide catalyst for 1,2-dichlorobenzene catalytic combustion

Cited by 47 publications

References 35 publications

Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources

Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources

Improved Activity and Stability of Chlorobenzene Oxidation Over Transition Metal-Substituted Spinel-Type Catalysts Supported on Cordierite

CeαMn1-αO2 CATALYSTS SUPPORTED OVER g-Al2O3 PREPARED BY MODIFIED REDOX-COPRECIPITATION METHODS FOR n-HEXANE COMBUSTION

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