In situ electrical conductivity and catalytic properties of copper ferrite synthesized by non-conventional methods

Munteanu, Cornel; Căldăraru, M.; Gingaşu, Dana; Féder, M.; Diamandescu, L.; Ionescu, N. I.

doi:10.1007/s11144-011-0357-5

Cited by 12 publications

(2 citation statements)

References 22 publications

(21 reference statements)

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“…21 Thus, efforts have always been put towards the development of low cost metal oxide HC oxidation catalysts. 13,14 A number of studies have been reported previously on the catalytic combustion of propane over different single or mixed transition metal oxides [21][22][23][24][25] and supported or doped transition metal oxides. 21,26 Amongst the metal oxides, cobalt oxide has been shown to be one of the most efficient in the total oxidation of HC.…”

Section: Introductionmentioning

confidence: 99%

Low temperature complete combustion of a lean mixture of LPG emissions over cobaltite catalysts

Прасад

Sony

2013

Catal. Sci. Technol.

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LPG is used as a cleaner substitute for gasoline and diesel for automobiles. However, it is a source of hydrocarbon (HC) emissions, causing adverse effects on living beings and the environment. Therefore, to reduce tailpipe HC emissions, this work aims to develop cobaltite spinel catalysts for the oxidation of a lean mixture of LPG. Cobaltite spinel catalysts i.e. MCo 2 O 4 (M = Ni, Cu, Zn) were synthesized by a coprecipitation method and characterized by FTIR, N 2 adsorption and XRD. The XRD/FTIR of the prepared cobaltite catalysts showed the formation of the corresponding MCo 2 O 4 spinels. Among the studied catalysts, NiCo 2 O 4 showed the highest activity with total oxidation of LPG below 200 °C. When CO was also added into the feed, a synergistic effect was observed for the simultaneous oxidation of LPG and CO at lower temperature. The total conversion was obtained at a temperature 10 °C less than that for the oxidation of LPG alone over NiCo 2 O 4 . The order of activity of the catalysts calcined at 300 °C was as follows: NiCo 2 O 4 > CuCo 2 O 4 > ZnCo 2 O 4 . With calcination of NiCo 2 O 4 at higher temperatures of 400 and 500 °C, total LPG conversion was obtained at higher temperatures of 228 °C and 265 °C respectively. However, it maintained 100% LPG conversion over a 50 h continuous run at a constant temperature of 265 °C. Thus, NiCo 2 O 4 is suitable for low temperature (>300 °C) complete combustion of a lean mixture of LPG emissions.

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Section: Introductionmentioning

confidence: 99%

Low temperature complete combustion of a lean mixture of LPG emissions over cobaltite catalysts

Прасад

Sony

2013

Catal. Sci. Technol.

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“…Up to now, iron oxides were investigated in propane combustion only under classical heating and were found to show promising propane conversion to CO 2 for rich-in-oxygen mixtures [9,10]. From the other side, it was shown that microwave energy can be very effective in the heating of iron oxides [11].…”

Section: Introductionmentioning

confidence: 99%

Total oxidation of lean propane over α-Fe2O3 using microwaves as an energy source

Dobosz

Zawadzki

2014

Reac Kinet Mech Cat

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A combined process of catalytic oxidation and microwave heating for the treatment of lean propane-air mixture, and ''green'' hematite synthesis were described in this work. The study demonstrated that removal and oxidation efficiencies of propane over a-Fe 2 O 3 were above 99.9 % after a short microwave radiation time (from 9 min) and they were strongly dependent on the applied microwave power. Comparing to conventional heating, the catalytic performance of hematite was enhanced by lowering the operation temperature under microwave conditions. Nanocrystalline a-Fe 2 O 3 catalyst with mesoporous structure was successfully prepared by a microwave-assisted hydrothermal treatment of iron hydroxide in an aqueous solution without any alkali additive, and characterized by XRD, TEM, TPR-H 2 , FTIR and N 2 adsorption-desorption. The microwave-induced heating over hematite catalyst appears to be a very effective alternative method for air treatment to the destruction and removal of short chain hydrocarbons.

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Development of a new catalytic and sustainable methodology for the synthesis of benzodiazepine triazole scaffold using magnetically separable CuFe₂O₄@MIL‐101(Cr) nano‐catalyst in aqueous medium

Gupta

Sarkar

et al. 2020

Applied Organom Chemis

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Magnetically retrieval CuFe2O4@MIL‐101(Cr) metal–organic framework was successfully prepared from easily available starting materials and characterized using various spectroscopic and analytical techniques such as powder X‐ray diffraction, scanning electron microscopy, energy dispersive X‐ray, transmission electron microscopy, elemental mapping, Fourier transform infrared spectroscopy, thermogravimetric analysis, X‐ray photoelectron spectroscopy, Brunauer–Emmett–Teller, vibrating sample magnetometer, and inductively coupled plasma optical emission spectroscopy. The catalyst was then used in the synthesis of benzodiazepines containing a triazole moiety in water. The advantages of this protocol include high yields, reusability of the catalyst, and gram‐scale synthesis.

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In situ electrical conductivity and catalytic properties of copper ferrite synthesized by non-conventional methods

Cited by 12 publications

References 22 publications

Low temperature complete combustion of a lean mixture of LPG emissions over cobaltite catalysts

Low temperature complete combustion of a lean mixture of LPG emissions over cobaltite catalysts

Total oxidation of lean propane over α-Fe2O3 using microwaves as an energy source

Development of a new catalytic and sustainable methodology for the synthesis of benzodiazepine triazole scaffold using magnetically separable CuFe₂O₄@MIL‐101(Cr) nano‐catalyst in aqueous medium

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In situ electrical conductivity and catalytic properties of copper ferrite synthesized by non-conventional methods

Cited by 12 publications

References 22 publications

Low temperature complete combustion of a lean mixture of LPG emissions over cobaltite catalysts

Low temperature complete combustion of a lean mixture of LPG emissions over cobaltite catalysts

Total oxidation of lean propane over α-Fe2O3 using microwaves as an energy source

Development of a new catalytic and sustainable methodology for the synthesis of benzodiazepine triazole scaffold using magnetically separable CuFe2O4@MIL‐101(Cr) nano‐catalyst in aqueous medium

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Development of a new catalytic and sustainable methodology for the synthesis of benzodiazepine triazole scaffold using magnetically separable CuFe₂O₄@MIL‐101(Cr) nano‐catalyst in aqueous medium