Reaction kinetics and mechanism of benzene combustion over the NiMnO 3 /CeO 2 /Cordierite catalyst

Li, Bing; Chen, Yingwen; Li, Lin; Kan, Jiawei; He, Shuo; Yang, Bo; Shen, Shubao; Zhu, Songming

doi:10.1016/j.molcata.2016.01.023

Cited by 40 publications

(15 citation statements)

References 30 publications

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“…In addition, the catalytic oxidation of toluene over Ce-Co/La-Co mixed oxides, Co 3 O 4 /La-CeO 2 , and Cu-Mn spinels can be interpreted by the MVK model. Li et al revealed that the catalytic combustion of benzene over a NiMnO 3 /CeO 2 /Cordierite catalyst obeyed the MVK mechanism. Arzamendi et al reported that the catalytic oxidation of MEK over Pd-Mn/Al 2 O 3 materials could be explained by the MVK model.…”

Section: Oxidation Kinetics and Mechanismmentioning

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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Section: Oxidation Kinetics and Mechanismmentioning

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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“…A detailed kinetic analysis performed on the NiMnO3/CeO2/cordierite catalyst reveals that the apparent kinetic order with respect to benzene is close to 0.2 but the MvK mechanism best fits the kinetic results with a reaction rate expression analogous to Eq. 6.4 [129]. All the studies showed that O2 adsorption and availability for oxidizing adsorbed benzene is a key step of the reaction.…”

Section: Hydrocarbonsmentioning

confidence: 97%

“…Aromatics. Benzene combustion was recently investigated over Mn-based mixed oxides: CeO2-MnOx composites [ 126 ], mesoporous Cu-Mn (221 m 2 g -1 ) [ 127 ], mesoporous CoMnAl oxides prepared from hydrotalcites [128] and NiMnO3-CeO2 supported on cordierite [129]. In most cases, benzene oxidation starts around 120-140°C with T50 ranging from 180 to 240°C.…”

Section: Hydrocarbonsmentioning

confidence: 99%

Transition metal oxides for combustion and depollution processes

Bion¹,

Can²,

Courtois³

et al. 2018

Metal Oxides in Heterogeneous Catalysis

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Transition metal oxides (M = Mn, Co, Fe, Ni,…) are potential catalysts for application in combustion and depollution processes. Owing to huge improvements in their preparation, perovskites, spinels, hexaaaluminates and some other oxide structures can replace noble metals in a number of processes. In this chapter, the most recent advances in the use of oxides for total oxidation (CO, methane, COV, wet air oxidation) and for the treatment of nitrogen compounds (NOx, NH3, urea) will be reviewed. In every case, the most probable mechanism (Langmuir-Hinshelwood, Eley-Rideal, Mars-van Krevelen,…) and the nature of active sites (M n+ /M n+1 ion pairs, acid-base sites,…) as well as the role of reactive oxygen species will be examined in the light of recent results and up-to-date concepts. Finally the outstanding progresses in the oxide synthesis allow to apply these concepts to the development of extremely active and more stable catalysts.

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“…The Mars-Van Krevelen model has been widely used in the kinetic modeling of toluene, CO, or other hydrocarbon catalytic oxidation reactions [29]. This mechanism is based on the idea that adsorption of one molecule (C7H8 or CO) occurs on another molecule (O2) that has already been adsorbed on the catalyst.…”

Section: Mechanism Of Surface Reactionmentioning

confidence: 99%

VOC and CO Removals by Perovskite Type Nanocatalysts Supported on Commercial Substrates

Hosseinpour

Bahramgour

Hosseini

et al. 2021

J. Chem. Eng. Res. Updates.

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In this research, it was tried to choose a kind of perovskite catalyst with optimized formulation La0.8Sr0.2Co0.66Fe0.34O3 to remove air pollutants. This perovskite catalyst stabilized on the various supports such as alumina and ZSM-5 with the sol-gel synthesis technique and ceramic monolith by dip-coating method. Four different catalysts by variable weight percentage including PE-Al 10%, PE-Al 20%, PE-Al 30%, and PE-Al 40% were prepared by sol-gel synthesis technique. In this work, the XRD technique was used to confirm the formation of perovskite catalysts’ crystalline phases on the supports. As a result, XRD patterns revealed the formation of the perovskite phase onto the alumina and zeolite supports. Activity tests of these four catalysts were examined in the catalytic oxidation of Toluene and CO using an experimental setup consisting of a tubular flow reactor at the temperature 280-400°C and 100-400°C for the toluene and CO removal systems, respectively. According to the results of the catalysts’ activity test, the alumina supported with 40% w/w perovskite catalyst showed the best performance, and its activity was similar to the activity of the bulk catalyst (over 95% conversion of toluene at about 290°C). For the coated catalysts on a ceramic monolith, the complete removal of carbon monoxide at 50°C was lower than the powdered form. Results from the activity test in a toluene removal system that show coating of the bulk and supported catalysts on ceramic monolith; have an essential impact on the activity test of these catalysts.

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Reaction kinetics and mechanism of benzene combustion over the NiMnO 3 /CeO 2 /Cordierite catalyst

Cited by 40 publications

References 30 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

Transition metal oxides for combustion and depollution processes

VOC and CO Removals by Perovskite Type Nanocatalysts Supported on Commercial Substrates

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