Catalytic performance of the Pd/TiO2 modified with MnOx catalyst for acetone total oxidation

Zhao, Qian; Ge, Yunli; Fu, Kaixuan; Zheng, Yuxin; Liu, Qingling; Song, Chunfeng; Ji, Na; Ma, Degang

doi:10.1016/j.apsusc.2019.143579

Cited by 37 publications

(19 citation statements)

References 45 publications

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“…The high valence Mn state was likely to exist in Ru–Mn/Beta by taking into account the broad binding energy interval (about 12 eV). After peak fitting, three peaks were found at the binding energy of 642.1 eV, 643.9 eV, and 646.0 eV, which were assigned to Mn(IV), Mn(VI), and Mn(VII), respectively, according to the reported studies. − The high-resolution spectra of XPS for Ru 3p with Ru/Beta and Ru–Mn/Beta were shown in Figure c. For Ru/Beta catalyst, two characteristic binding energies of RuO 2 for Ru 3p 3/2 and Ru 3p 1/2 were found at 463.1 and 485.3 eV, respectively. − After curve fitting, two shoulder peaks at 465.3 and 487.5 eV were observed adjacent to those two main peaks.…”

Section: Resultsmentioning

confidence: 77%

Mn-Doped Highly Dispersed RuO₂ Catalyst with Abundant Oxygen Vacancies for Efficient Decarboxylation of l-Lysine to Cadaverine

Zhan-ling

Xin

Qin

et al. 2021

ACS Sustainable Chem. Eng.

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Chemical decarboxylation of l-lysine is a promising route for producing cadaverine, which is the key monomer of new polyamide, polyurethane, and nylon materials. Currently, the wide application of Ru-based catalysts is restricted by its low efficiency which was mainly caused by the severe agglomeration of ruthenium nanoparticle. In this study, manganese (Mn) doped ruthenium oxide catalyst was synthesized through the wetness impregnation method with Beta zeolite as the candidate support for efficient decarboxylation of l-lysine to cadaverine. Structure characterization showed that RuO2 was the main phase of ruthenium oxide nanoparticles. The prepared Ru–Mn/Beta catalysts exhibited a high dispersion of ruthenium oxide nanaoparticle on Beta, which maximized the utilization of active sites. Meanwhile, abundant oxygen vacancies were generated after Mn doping to balance the charge of the disturbed long-term periodic structure in the RuO2 crystalline, which greatly facilitated the adsorption and activation of l-lysine by the capture of carboxylic groups. A full conversion was obtained with Ru–Mn/Beta, and a selectivity of cadaverine up to 54% was reached in a short time of 1.5 h. The cadaverine production rate in Ru–Mn/Beta was 60.8 mg/L/min, which was almost triple that in Ru/Beta (17.7 mg/L/min). The synergetic catalysis of metal active sites and oxygen vacancies provides a new opportunity to design efficient catalyst of decarboxylation of amino acids.

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Section: Resultsmentioning

confidence: 77%

Mn-Doped Highly Dispersed RuO₂ Catalyst with Abundant Oxygen Vacancies for Efficient Decarboxylation of l-Lysine to Cadaverine

Zhan-ling

Xin

Qin

et al. 2021

ACS Sustainable Chem. Eng.

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“…A gas chromatograph (Fuli, GC-9790) with two FID detectors was used to detect the concentration of the acetone and reaction products, respectively. The acetone removal rate ( X ), CO 2 yield ( Y ), and CO yield ( Z ) were calculated using the following equations: where C in , C out , C CO2 , and C CO are the initial acetone concentration, the final concentration of acetone after the oxidation, and the CO 2 and CO concentrations at different temperatures.…”

Section: Experiments and Methodsmentioning

confidence: 99%

Confined Growth of Cu-Doped CeO₂ Nanostructures in Boron-Rich Carbon Frameworks for Acetone Oxidation

Liu

Han

et al. 2021

ACS Appl. Nano Mater.

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The design and synthesis of low-cost, excellent catalytic activity catalysts is the key to catalytic oxidation of VOCs. Nanomaterials have attracted great interest in recent years. Here, a simple impregnation method was used to synthesize the Cu-doped CeO 2 nanostructure catalyst supported on a boron-rich carbon carrier and applied for the catalytic oxidation of acetone. After trace amounts of Cu were added to the single CeO 2 supported on boronrich carbon catalyst, Cu-doped CeO 2 catalyst displayed better catalytic activity. Besides, it also has long-term stability and H 2 O resistance. The influence of copper doping on the performance of the catalyst was studied by many characterization technologies. The result indicated that the introduction of Cu can further limit the growth of CeO 2 grains based on the limited growth of metal nanoparticles on the carrier, can make the amounts of Ce 3+ and adsorb oxygen species increase, and can enhance the redox properties of CeO 2 . Therefore, Cu-doped CeO 2 nanostructures in a boron-rich carbon catalyst have the potential for the removal of acetone.

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“…Next, benzyl alcohol was decomposed into CO 2 and H 2 O via benzaldehyde and benzoic acid. Zhao et al 77 proposed an MVK mechanism for acetone oxidation over Pd/TiO 2 modified with the MnO x catalyst. It was found that the transformation of oxygen species (such as O ads , O latt , and O 2 ) played critical roles in the acetone oxidation process.…”

Section: Catalysis Science and Technologymentioning

confidence: 99%

Recent progress on catalysts for catalytic oxidation of volatile organic compounds: a review

Liu

Shi

et al. 2022

Catal. Sci. Technol.

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Catalytic performance of the Pd/TiO2 modified with MnOx catalyst for acetone total oxidation

Cited by 37 publications

References 45 publications

Mn-Doped Highly Dispersed RuO₂ Catalyst with Abundant Oxygen Vacancies for Efficient Decarboxylation of l-Lysine to Cadaverine

Mn-Doped Highly Dispersed RuO₂ Catalyst with Abundant Oxygen Vacancies for Efficient Decarboxylation of l-Lysine to Cadaverine

Confined Growth of Cu-Doped CeO₂ Nanostructures in Boron-Rich Carbon Frameworks for Acetone Oxidation

Recent progress on catalysts for catalytic oxidation of volatile organic compounds: a review

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Catalytic performance of the Pd/TiO2 modified with MnOx catalyst for acetone total oxidation

Cited by 37 publications

References 45 publications

Mn-Doped Highly Dispersed RuO2 Catalyst with Abundant Oxygen Vacancies for Efficient Decarboxylation of l-Lysine to Cadaverine

Mn-Doped Highly Dispersed RuO2 Catalyst with Abundant Oxygen Vacancies for Efficient Decarboxylation of l-Lysine to Cadaverine

Confined Growth of Cu-Doped CeO2 Nanostructures in Boron-Rich Carbon Frameworks for Acetone Oxidation

Recent progress on catalysts for catalytic oxidation of volatile organic compounds: a review

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Mn-Doped Highly Dispersed RuO₂ Catalyst with Abundant Oxygen Vacancies for Efficient Decarboxylation of l-Lysine to Cadaverine

Mn-Doped Highly Dispersed RuO₂ Catalyst with Abundant Oxygen Vacancies for Efficient Decarboxylation of l-Lysine to Cadaverine

Confined Growth of Cu-Doped CeO₂ Nanostructures in Boron-Rich Carbon Frameworks for Acetone Oxidation