Catalytic oxidation of chlorobenzene over Pd/perovskites

Giraudon, Jean‐Marc; Elhachimi, Amal; Leclercq, G.

doi:10.1016/j.apcatb.2008.04.023

Cited by 119 publications

(76 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the past decades, three types of catalysts, that is, noble metalbased catalysts, transition metal oxide catalysts, and solid acid catalysts [3][4][5], have been studied for the catalytic combustion of CVOCs. Although the noble metal catalysts are catalytically more active at low temperature in comparison with the other metal oxides, the high cost, limited availability, and low resistance to halide such as HCl and Cl 2 , greatly restrict their large-scale application [6,7].…”

Section: Introductionmentioning

confidence: 99%

Catalytic behavior and synergistic effect of nanostructured mesoporous CuO-MnOx-CeO2 catalysts for chlorobenzene destruction

Shen

et al. 2014

Applied Surface Science

107

View full text Add to dashboard Cite

a b s t r a c tMesoporous CuO-MnO x -CeO 2 composite metal oxides with different copper and manganese loadings were prepared by a urea-assistant hydrothermal method, and were further adopted for the complete catalytic combustion of chlorobenzene. The effects of reaction conditions such as inlet reagent concentration and water feed concentration on chlorobenzene combustion were also studied. The structure and textural properties of the synthesized catalysts were characterized via the XRD, N 2 adsorption/desorption, FE-SEM, TEM, H 2 -TPR, O 2 -TPD, and XPS techniques. The characterization results reveal that the presence of a small amount of Mn species can facilitate the incorporation of Cu and Mn ions into ceria lattice to form Cu-Mn-Ce-O solid solution. The synergistic effect of Cu and Mn species can reduce the redox potential of the composite catalysts, and produce large amounts of oxygen vacancies in the interface of CuO x , MnO x , and CeO 2 oxides. The catalyst with Cu/Mn atomic ratio of 1/1 exhibits the best chlorobenzene elimination capability, oxidizing about 95% of the inlet chlorobenzene at 264• C with CO 2 selectivity higher than 99.5%. The concentration and mobility of the chemically adsorbed oxygen are vital for the effective removal of surface Cl species, which inhibits the dissociation of oxygen molecules and decreases the reducibility of the copper and manganese species. It can be rationally concluded that the superior catalytic performance and durability of the mesoporous CuO-MnO x -CeO 2 composite oxides are primarily attributed to the higher surface oxygen concentration and better active oxygen mobility.

show abstract

Section: Introductionmentioning

confidence: 99%

Catalytic behavior and synergistic effect of nanostructured mesoporous CuO-MnOx-CeO2 catalysts for chlorobenzene destruction

Shen

et al. 2014

Applied Surface Science

107

View full text Add to dashboard Cite

show abstract

“…In order to make the reaction economically competitive, it is necessary to explore higher active catalysts to perform at low temperatures. Currently, various kinds of catalysts, such as supported noble metals [3,4], and transition metal oxides [5,6], are being widely used for catalytic oxidation of VOCs. Among them, the supported noble metals have been generally regarded as the most desirable catalysts, in terms of their catalytic activity, selectivity and stability for catalytic oxidation [7].…”

Section: Introductionmentioning

confidence: 99%

“…The physicochemical states of the catalysts varying with preparation methods were also examined by using the BET, XRD, XPS, TEM, TPR and TPD techniques. 4 and a solution of NaOH (1 mol/L) and Na 2 CO 3 (0.5 mol/L) were separately prepared with deionized water. At room temperature, both solutions were slowly and simultaneously added to a beaker containing deionized water under vigorous stirring, at a pH value around 10.…”

Section: Introductionmentioning

confidence: 99%

Catalytic oxidation of toluene over Pd/Co3AlO catalysts derived from hydrotalcite-like compounds: Effects of preparation methods

Peng

Cheng

et al. 2011

Applied Catalysis B: Environmental

231

View full text Add to dashboard Cite

“…The catalytic activity of noble metal-based catalysts is generally higher than that of metal oxides. Palladium (Pd) nanoparticles are especially active for a wide range of VOCs oxidation states (Giraudon et al, 2008). In recent years, studies on catalysts have not only focused on catalysts with superior performance for catalytic oxidation, but also on the reaction processes and mechanisms of VOCs oxidation.…”

Section: Introductionmentioning

confidence: 99%

Effects of metal and acidic sites on the reaction by-products of butyl acetate oxidation over palladium-based catalysts

Yue

Hao

et al. 2014

Journal of Environmental Sciences

View full text Add to dashboard Cite

a b s t r a c tCatalytic oxidation is widely used in pollution control technology to remove volatile organic compounds. In this study, Pd/ZSM-5 catalysts with different Pd contents and acidic sites were prepared via the impregnation method. All the catalysts were characterized by means of N 2 adsorptiondesorption, X-ray fluorescence (XRF), H 2 temperature programmed reduction (H 2 -TPR), and NH 3 temperature programmed desorption (NH 3 -TPD). Their catalytic performance was investigated in the oxidation of butyl acetate experiments. The by-products of the reaction were collected in thermal desorption tubes and identified by gas chromatography/mass spectrometry. It was found that the increase of Pd content slightly changed the catalytic activity of butyl acetate oxidation according to the yield of CO 2 achieved at 90%, but decreased the cracking by-products, whereas the enhancement of strong acidity over Pd-based catalysts enriched the by-product species. The butyl acetate oxidation process involves a series of reaction steps including protolysis, dehydrogenation, dehydration, cracking, and isomerization. Generally, butyl acetate was cracked to acetic acid and 2-methylpropene and the latter was an intermediate of the other by-products, and the oxidation routes of typical by-products were proposed. Trace amounts of 3-methylpentane, hexane, 2-methylpentane, pentane, and 2-methylbutane originated from isomerization and protolysis reactions.

show abstract

Catalytic oxidation of chlorobenzene over Pd/perovskites

Cited by 119 publications

References 14 publications

Catalytic behavior and synergistic effect of nanostructured mesoporous CuO-MnOx-CeO2 catalysts for chlorobenzene destruction

Catalytic behavior and synergistic effect of nanostructured mesoporous CuO-MnOx-CeO2 catalysts for chlorobenzene destruction

Catalytic oxidation of toluene over Pd/Co3AlO catalysts derived from hydrotalcite-like compounds: Effects of preparation methods

Effects of metal and acidic sites on the reaction by-products of butyl acetate oxidation over palladium-based catalysts

Contact Info

Product

Resources

About