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carbon monoxide oxidation on lacoo3 perovskite - search results

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carbon monoxide oxidation on lacoo3 perovskite - search results

Synthesis of perovskite-type lanthanum cobalt oxide ...

properties of perovskite-type oxides depend mainly on the nature of the A and B ions and on their valence states2. LaCoO 3 has many practical applications owing to its excellent physical and chemical properties and has been shown to have high catalytic activity for the oxidation of carbon monoxide, methane, propane, hexane, and toluene.

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Carbon monoxide oxidation on LaCoO3 perovskite type ...

Carbon monoxide oxidation on LaCoO 3 perovskite type catalysts prepared by reactive grinding Patel Femina and Patel Sanjay Department of Chemical Engineering Institute of Technology, Nirma University, Ahmedabad-382481, INDIA Available online at: (Received 4th thOctober 2011, revised 9th January 2012, accepted 25 January 2012) Abstract

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LaMn1 – xFexO3 (x = 0–1) Perovskites in Methane and Carbon ...

Due to their high thermal and chemical stability, oxides with the structure of perovskite LaBO 3 are promising materials for use in a number of high-temperature processes, for example, as high-temperature cathode materials or catalysts for oxidation processes [1, 2].Perovskites containing Mn and Fe cations in the B sublattice are among the most active catalysts in oxidation processes [3, 4].

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[PDF] CO oxidation on perovskite-type LaCoO3 synthesized ...

In order to synthesize perovskite-type LaCoO3 with good surface crystallinity, the gel prepared by adding both ethylene glycol (EG) and citric acid (CA) to the aqueous solution of La(NO3)3 center dot 6H(2)O and Co(NO3)(2) center dot 6H(2)O was fired at 600 degrees C in air for 3 h. The transmission electron microscopy (TEM) observation indicated that the particles of LaCoO3 tended to have a ...

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Manganese Oxide Promoted LaCoO Nano-Perovskite for ...

Manganese Oxide Promoted LaCoO3 Nano-Perovskite for Oxidation of a Model Exhaust Gas 26 I ra niJ ou lfCh emcE g,V .9N2 3. Results and discussion Catalytic performance tests of LaCoMnxO(3+ä) catalysts where x is 0.0, 0.2, 0.3 and 0.5 for the carbon monoxide and ethane oxidation are shown in Figs. 2-3. Ethane was selected

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Effect of citric acid concentration as emulsifier on ...

Ehsan Frozandeh-Mehr, Azim Malekzadeh, Mahnaz Ghiasi, Ahmad Gholizadeh, Yadollah Mortazavi, Abbasali Khodadadi, Effect of partial substitution of lanthanum by strontium or bismuth on structural features of the lanthanum manganite nanoparticles as a catalyst for carbon monoxide oxidation, Catalysis Communications, 10.1016/j.catcom.2012.08.009 ...

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‪Anupama Mishra‬ - ‪Google Scholar‬

Effect of Preparation Method and Calcination Temperature on LaCoO3 Perovskite Catalyst for Diesel Soot Oxidation. A Mishra, R Prasad. Canadian Chemical Transactions 3 (1), 95-107, 2015. 5: 2015: Studies and catalytic oxidation of diesel soot over perovskite oxides. A Mishra. 2015: ... A Review on Preferential Oxidation of Carbon Monoxide in ...

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Ahmad Gholizadeh – Damghan University

The effect of partial substitution of lanthanum by strontium or bismuth in LaMnO 3 nano-perovskites, i.e. La (1 - x)(Sr or Bi) xMnO 3 samples, in which x = 0.0, 0.2 or 0.4, is explored for stoichiometric oxidation of carbon monoxide with air. FT-IR and XRD analyses confirmed the …

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US5149516A - Partial oxidation of methane over perovskite ...

US5149516A US07/597,219 US59721990A US5149516A US 5149516 A US5149516 A US 5149516A US 59721990 A US59721990 A US 59721990A US 5149516 A US5149516 A US 5149516A Authority US United States Prior art keywords methane oxygen perovskite carbon partial oxidation Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

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A review on photocatalytic CO2 reduction using perovskite ...

As the search for efficient catalysts for CO 2 photoreduction continues, nanostructured perovskite oxides have emerged as a class of high-performance photocatalytic materials. The perovskite oxide candidates for CO 2 photoreduction are primarily nanostructured forms of titanates, niobates, tantalates and cobaltates. These materials form the focus of this review article because they …

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Chemistry

There has been some interest in examining the oxidation of carbon monoxide (CO) and hydrocarbons (C. n. H. 2n+2) on perovskite-type oxides [1–7]. Because oxidation occurs on the outmost surface, perovskite-type oxides must be synthesized with good surface crystallinity (regularity of ions) and/or a large specific surface area. Perovskite-type ...

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Characterization and carbon monoxide oxidation activity of ...

tion of the perovskite phase with a lower content of Sr ( y = 0.14) than expected ( y = 0.3) according to the overall metal content (aTble I). The Cr 2 p binding gyener values for Cr 3 + and Cr 4 + are very close. Therefore, the separation of the peaks was not possible with the resolution of instrument used. Decon-CARBON MONOXIDE OXIDATION 19

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LaCoO3: Effect of synthesis conditions on properties and ...

A significant signal around 2058 cm(-1) testifies about the interaction of CO with the acidic sites distributed on the surface of all the samples. The two nanostructured bulk LaCoO3 show a high reactivity toward CO oxidation since 423 K. A similar oxidation capability is observed also for the nanocomposite richer in cobalt.

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Catalytic Oxidation of Carbon Monoxide on Pd-Containing ...

Perovskite catalysts ABO 3 A=La, Sr, Ce, Nd, Sm, and B=Co, Mn, Cr, Fe, Ni show high activity for CO and hydrocarbons oxidation and high thermal resistance [1–21].The activity of the perovskite in oxidation processes can be enhanced by partial substitution of the metal in position A and/or position B with metal cations differing in their valence number.

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Light-Driven Electrochemical Carbon Dioxide Reduction to ...

p-i-ndouble-cation lead halide perovskite solar cells in combination with catalytic electrodes for carbon dioxide reduction and water oxidation at near-neutral pH. Three series-connected photovoltaic cells and gold and ruthenium(IV) oxide electrodes provide carbon monoxide with >8% solar-to-carbon monoxide conversion effi-ciency for 4.5 h.

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Oxidation of carbon monoxide on LaMn1-xCuxO3 Perovskite-type mixed oxide[J]. J Chem Soc,Faraday Trans,1994,90(8):1183～1189 [25] Belessi V C, Trikalitis P N, Ladavos A K, etal.

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Controlled generation of uniform spherical LaMnO3, LaCoO3 ...

Controlled generation of uniform spherical LaMnO3, LaCoO3, Mn2O3, and Co3O4 nanoparticles and their high catalytic performance for carbon monoxide and toluene oxidation. Yuxi Liu Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing ...

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Low-Temperature Synthesis and Gas Sensitivity of ...

For example, it has been reported that LaCoO 3 exhibits catalytic activity in the oxidation of different compounds, like carbon monoxide (CO) and methane (CH 4), and also exhibits photocatalytic activity in the oxidation of methyl orange and water [20–27]. In addition, the LaCoO 3 is a material that presents good thermoelectric properties .

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Controlled generation of uniform spherical LaMnO3, LaCoO3 ...

Controlled generation of uniform spherical LaMnO3, LaCoO3, Mn2O3, and Co3O4 nanoparticles and their high catalytic performance for carbon monoxide and toluene oxidation Yuxi Liu, Dai, Jiguang Deng, Lei Zhang, Zhenxuan Zhao, Xinwei Li, Yuan Wang, Shaohua Xie, Huanggen Yang, Guangsheng Guo

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(PDF) La1-xSrxCoO3 (x=0, 0.2) Perovskites Type Catalyst ...

Specific surface area of perovskites were 2.60 m2g-1 and 5.31 m2g-1 for LaCoO3 and La0.8Sr0.2CoO3 respectively.The catalytic activity of the perovskite samples (for low-temperature CO oxidation ...

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Improvement of Catalytic Performance of Perovskites by ...

1. Introduction. Perovskite-type oxides with ABO 3 structure have attracted significant interest in many areas of solid-state chemistry, including catalysis. Several ABO 3 formulations have demonstrated success, especially in total oxidation and partial oxidation of hydrocarbons, carbon monoxide oxidation, alkenes hydrogenation, alkanes hydrogenolysis, alcohols synthesis, dry …

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Structural Features of (Ce, La or Sr)(Mn or Co)O Nano ...

properties for carbon monoxide oxidation. The CNA method by the aim of obtaining nano-perovskite mixed oxides has been used. 2 Experimental Samples of (Ce, La, or Sr)(Mn or Co)O 3 were prepared by the citrate–nitrate auto-combustion method using metal nitrate precursors in …

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US7329691B2 - Perovskite catalyst for the partial ...

US7329691B2 US10/712,691 US71269103A US7329691B2 US 7329691 B2 US7329691 B2 US 7329691B2 US 71269103 A US71269103 A US 71269103A US 7329691 B2 US7329691 B2 US 7329691B2 Authority

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Properties and Applications of Perovskite-Type Oxides ...

Properties and Applications of Perovskite-Type Oxides. L.G. Tejuca, J.L.G. Fierro. CRC Press, Dec 22, 1992 - Science - 400 pages. 0 Reviews. This reference offers an overview of the bulk and surface properties of perovskite-like structures, and provides the latest discussions on the applications of these materials and processes.

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Preparation of supported La 0.66 Sr 0.34 Ni 0.3 Co 0.7 O 3 ...

Read "Preparation of supported La 0.66 Sr 0.34 Ni 0.3 Co 0.7 O 3 perovskite catalysts and their performance in methane and odorized natural gas combustion, The Canadian Journal of Chemical Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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Pulsed reactivity on LaCoO3-based perovskites: a ...

A pulsed reactivity experiment has been set up in order to investigate the catalytic oxidation reaction of carbon monoxide (CO). Within a single experiment, this analysis allowed evaluation of the oxygen storage capacity (OSC) and derivation of kinetic parameters to compare the behavior of …

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The influence of alkali metal cations in substituted ...

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Toward the Design of a Hierarchical Perovskite Support ...

An ultrastable Au nanocatalyst based on a heterostructured perovskite support with high surface area and uniform LaFeO3 nanocoatings was successfully synthesized and tested for CO oxidation. Strikingly, small Au nanoparticles (4-6 nm) are obtained after calcination in …

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Monoxide - Science

perovskite-like crystal structure, in the oxidation of CO, the main toxic con-stituent of automotive exhaust. The compounds LaCoO3 and PrCoO3 were found to be active catalysts for the ox-idation of CO. The manganites La1-,-PbXMnO3 and Pr1-xPbxMnO3, but particularly Ndl-xPbxMnO3, with Table 1.

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Production of perovskite catalysts on ceramic monoliths ...

(Lanthanum, Cerium)(Iron, Manganese, Cobalt, Palladium)(Oxygen)3-Perovskite catalyst was prepared by the citrate route and deposited on ceramic monoliths via dip coating procedure. The catalyst was applied on a car with XU7 motors and the amount of emission was monitored with vehicle emission test systems in Sapco company. The results were compared with the imported catalyst with …

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