No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
Perovskite-type LaCoO3-x(x = 0 similar to 0.075) porous powder was synthesized via citrate sol-gel method. With calcination temperature increasing, its crystal structure changed from LaCoO3 to ...
XRD analysis showed that La1-xSrxCoO3 (x=0, 0.2) are a single-phase perovskite type oxides. Traces of La0.6Sr0.4CoO3 in addition to perovskite phase were detected in the …
Thick films of LaCoO3 perovskite and metal oxides (In, Bi and Pd) impregnated in LaCoO3 have been used as sensor materials for sensing temperature and carbon monoxide gas. LaCoO3 has shown good ...
Insights into the interface of NiCo2O4 spinel /LaCoO3 perovskite nano-composite for CO and soot oxidation. Journal of Environmental Sciences 2024, 138, 339-349. ... Catalytic performance of spinel-type Ni-Co Oxides for …
Lanthanum cobaltite (LaCoO3) is one of the most promising catalysts for the oxidation of gaseous pollutants such as carbon monoxide, unburnt hydrocarbons and nitrogen oxide [7, 8]. Lanthanum ...
Top Catal DOI 10.1007/s11244-015-0494-6 ORIGINAL PAPER Promotion of Pt Nanoparticles by Lattice Oxygen in SmFeO3 Perovskite Group for Carbon Monoxide and Ethylene Oxidation Rima J. Isaifan1 • William D. Penwell2 • Joao O. C. Filizzola1 • Javier B. Giorgi2 Elena A. Baranova1 • Ó Springer Science+Business Media New York 2015 Abstract The novel Sm1-xCexFeO3-d (x …
Surface defects of perovskite can also be easily controlled using various methods. 14, 17, 18, 19 Tuning the surface defects of perovskite, such as oxygen vacancies, is critical when using it as a heterogeneous catalyst. The oxygen vacancies in the perovskite oxides are crucial in various heterogeneous catalyzed oxidation reactions such as carbon monoxide (CO), …
Perovskite type mixed oxides LaCoO3 with high specific surface area was prepared by reactive grinding. These catalysts was characterized by X-ray diffraction (XRD), Scanning electron …
Results 3.1. Catalysts characterization The XRD spectra of LaCoO3 (Cit1) and La0.8 Sr0.2 Co0.8 Cu0.2 O3 (Cit3 and Cop3) samples after 5 h of carbon monoxide oxidation are compared in Figs. 2 and 3. Spectra Cit1 in Fig. 2 shows that calcination at 700 C has completely transformed lanthanum and cobalt nitrates into LaCoO3 perovskite phase.
As a key industry involving major fossil fuel consumption, shipping is one of the important sources of global air pollution. The main pollutants emitted by ships include carbon dioxide (CO 2), nitrogen oxides (NO x), particulate matter (PM), carbon monoxide (CO), and hydrocarbons (HC) [1], [2].The ship exhaust has a wide temperature range (about 150–350 ℃ …
Perovskites containing Co, Fe, and Mn showed good activity in the oxidation of CO and in the reduction of NO x. In these processes, perovskite catalysts La 0.8 Sr 0.2 CoO 3, LaFe 0.95 Pd …
The catalytic activity of monolithic perovskite LaCoO3 in the oxidation of carbon monoxide in relati... September 2005 · PRZEMYSŁ CHEMICZNY Barbara Kucharczyk
DOI: 10.1016/J.CATCOM.2008.03.015 Corpus ID: 5999178; CO oxidation on perovskite-type LaCoO3 synthesized using ethylene glycol and citric acid @article{Taguchi2008COOO, title={CO oxidation on perovskite-type LaCoO3 synthesized using ethylene glycol and citric acid}, author={Hideki Taguchi and Satoshi Yamasaki and Atsushi …
The Ca-substituted LaCoO3 (La0.9Ca0.1CoO3) and citric acid-etched LaCoO3 (LaCoO3-CA) show T90 at 220 and 215 oC, respectively, which are substantially lower than that of pristine LaCoO3 (305 oC).
perovskite-like solid catalysts behavior. Keywords CO oxidation · Vacancy eect · B cation eect · NAP-XPS 1 Introduction Carbon monoxide oxidation and selective oxidation (SELOX) has been widely used as a model reaction for cata - lytic systems and is frequently used for oxide catalysts that present oxygen mobility and active metals [].
Perovskite-based catalysts (ABO 3) have been extensively investigated as potential low-cost substitutes for precious metals since the 1970s (Libby, 1971, Voorhoeve et al., 1972, Voorhoeve et al., 1977, Schlatter et al., 1973), mostly for the catalytic oxidation of CO and hydrocarbons.Also, there have been increasing reports on the catalytic performance of …
Perovskites have been found to show comparable activity to that of noble metals for the oxidation of carbon monoxide, especially those perovskites containing lanthanum and a transition metal like cobalt or manganese [ 8,15 ]. ... Powder X-ray diffraction pattern of LaCoO3 perovskite during high-temperature experiment in helium (a) and 10% ...
Perovskite-type LaCoO3 oxide was prepared using Pechini's method and supported on alumina using a physical mixture and thermal treatment in order to obtain catalysts with different perovskite ...
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 ...
DOI: 10.1016/J.CEJ.2015.07.051 Corpus ID: 94001564; Catalytic performances of perovskite oxides for CO oxidation under microwave irradiation @article{Einaga2016CatalyticPO, title={Catalytic performances of perovskite oxides for CO oxidation under microwave irradiation}, author={Hisahiro Einaga and Yusaku Nasu and Manabu Oda and Hikaru Saito}, …
Catalytic Oxidation of Carbon Monoxide on LnCo03 Perovskite Oxides SUSAN GEORGE AND B. VISWANATHAN Department of Chemistry, Indian Institute of Technology, Madras 600 036, India Received August 25, 1982; accepted March 21, 1983 The Kinetics of oxidation of CO from stoichiometric and other mixtures on LnCoO3 (Ln = La, Nd, Gd) have …
The monolithic catalysts prepd. by calcining a La (NO3) 3 + Co (NO3)2 mixt. (3 hrs./750°C)to form the LaCoO3 perovskite active phase, BET sp. surface 6.6 m 2/g, were most active in the oxidn....
The catalytic performance for carbon monoxide oxidation over the catalysts were studied. ... Pure perovskite LaCoO3 phase is formed after heating at 600°C in the case of nitrates while in the ...
Octahedral molecular sieves (OMS), doped with Ag +, Co 2+, and Cu 2+, have been tested for their catalytic activity for carbon monoxide oxidation at low temperatures for long times on stream.Metal loaded OMS materials are highly active for this catalytic reaction and compare favorably with other catalysts such as Hopcalite-like CuMn 2 O 4 catalysts, supported Ag …
In this study, Ag substituted LaCoO3 perovskite (La1-xAgxCoO3) and LaCoO3 supported Ag (Ag/LCO) catalysts were synthesized by the one-pot method and impregnation, respectively, followed by the ...
The oxygen vacancies in the perovskite oxides are crucial in various heterogeneous catalyzed oxidation reactions such as carbon monoxide (CO), propane, and toluene …
Perovskite type mixed oxides LaCoO3 with high specific surface area was prepared by reactive grinding. These catalysts was characterized by X-ray diffraction (XRD), Scanning electron microscope (SEM) - Energy dispersive X-ray spectroscopy (EDX or EDS) and BET surface …
Gold catalysts prepared by coprecipitation for low-temperature oxidation of hydrogen and of carbon monoxide. J. Catal. ... Using PMMA as a hard template, our group [23] has obtained 3DOM BiVO4 with a surface area of 18–24 m2/g, Au (xAu/3DOM LaCoO3, x = 0–7.63 wt%) with a surface area of 24–29 m2/g [24], and xAu/3DOM-structured La0.6Sr0 ...
The deactivation mechanism and methods to cope with the poisoning by SO2 of LaCoO3 perovskite-based NO oxidation catalyst were investigated. The LaCoO3 perovskite was synthesized by a sol-gel ...
Catalytic oxidation of carbon monoxide over the perovskite-type mixed catalysts Lll(i+xll:zSr(l-x)I2COt-xCUx0l-A. (0.1 :::; x $ 0.9) has been investigated. Activity testing results show that the catalysts in the range x = 0.1-0.4 are of high activity for CO oxidation, especially, the catalyst of x = 0.4 can make CO to oxidize completely below 170" and is regarded as the optimum catalyst …
