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2 edition of Methane steam reforming over LaCr1-x NixO3 perovskite catalysts. found in the catalog.

Methane steam reforming over LaCr1-x NixO3 perovskite catalysts.

Ram Chandra Paul

Methane steam reforming over LaCr1-x NixO3 perovskite catalysts.

by Ram Chandra Paul

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Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.Sc.) -- University of Toronto, 2000.

SeriesCanadian theses = -- Thèses canadiennes
The Physical Object
Pagination2 microfiches : negative. --
ID Numbers
Open LibraryOL19190627M
ISBN 100612497232

catalysts which exhibit better and stable catalytic activity Rostrup-Nielsen et al have compared Ni, Ru, Rh, Pd, Ir and Pt catalysts and concluded that Ru and Rh show relatively higher activity and low carbon formation. Steam methane reforming reaction has been investigated over supported catalysts . Methane CO2 Reforming Using Perovskite Type Oxide as a Catalyst Armaghan Latifi and Matin Parvari+ 1 School of Chemical Engineering, Iran University of Science and Technology, Tehran, Iran. Abstract. LaNiCoO3 perovskite oxide was prepared with the Pechini method and used as a promising catalyst in methane CO2 reforming. X-ray Diffraction (XRD, Branauer-Emmett-Teller .

Figure 1. SMR performances of Nexceris granular catalyst and a commercial Ni catalyst under similar testing conditions of GHSV = ,h-1, pressure = 1atm, H 2 O/CH 4 = 3/1, and temperature = °C.. As the methane conversions for the Reformance-SMR™ catalyst were nearer to the thermal equilibrium at a GHSV of , h-1, the gas flow rate was increased to GHSV = 1,, hAuthor: Nexceris. LaxCe1-xNiO3 perovskite catalysts by substitution of La with Ce and reported moderate activity of the catalysts during the dry reforming. Recently, the efficiency of Ni-Ce solid solutions in partial oxidation of methane has been well reported. The application of these solid solutions to dry reforming of methane Author: T Sagar, N Sreelatha, G Hanmant, K Upendar, N Lingaiah, Kamaraju Seetha Rama Rao, C Satyanarayana, I.

On-cell methane (CH 4) reforming in Ni-based anodes is an attractive option for directly using CH 4-based fuels for solid oxide fuel cells (SOFCs) with high fuel efficiency and simplified system design 1, 4 steam reforming is a catalytic process for commercial production of H 2 or syngas at a H 2:CO molar ratio of according to the endothermic reaction ofCited by: 2.   The steam reforming of ethanol was performed over Co and Ni catalysts supported on perovskite-type oxides (LaAlO 3, SrTiO 3 and BaTiO 3).Co and Ni catalysts supported on LaAlO 3 and SrTiO 3 showed high catalytic activities and long-term stabilities and suppressed coke formation while Co/BaTiO 3 showed lower catalytic activities and poorer coking resistance.. The average particle size Cited by:


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Methane steam reforming over LaCr1-x NixO3 perovskite catalysts by Ram Chandra Paul Download PDF EPUB FB2

The kinetics of the stearn reforming of methane over perovskite catalysts with the formula LaCr,-,Ni,O; (x = & ) have been exarnined over a wide range of temperatures ('~ to 1 ~~) and atmospheric by: 1.

Steam CO 2 reforming of methane was carried out over cerium substituted perovskite catalysts. Among the catalysts studied, La Ce NiO 3 showed the best performance with 49% of methane and 14% of CO 2 conversion under the tested conditions.

The chemical and structural properties of the catalysts before and after the reaction were studied by N 2 physisorption, X-ray diffraction, CO 2-TPD Cited by: Kinetics of methane steam reforming over a commercial nickel-based catalyst and over an innovative rhodium-perovskite catalyst of formula BaRh x Zr (1−x) O 3 was studied at atmospheric pressure and in the temperature range – K.

Extensive experimental runs were firstly carried out in a micro-reactor, with the catalysts in powder form, to evaluate their performances in steam methane Cited by: La2NiTiO6 double perovskite was synthesized by modified Pechini method.

The catalyst activity for steam reforming of methane was investigated at temperatures Methane steam reforming over LaCr1-x NixO3 perovskite catalysts.

book to °C, under different reduction conditions. By reducing La2NiTiO6 with 10 % H2/N2 at 1, °C, the crystalline phase changed to mainly Ni0 and La2TiO5, which decreases the onset temperature of methane conversion to °C Cited by: 9.

Perovskite type oxide (ABO 3) is a good candidate as a catalyst support [21,22]. Urasaki et al. [22] performed steam reforming of CH 4 over Ni catalysts supported on perovskite.

Ni/LaAlO 3 showed. Abstract. The effect of Rh addition upon catalyst characteristics and performance in methane steam reforming was investigated using Rh-promoted Ni/Al 2 O 3 catalysts. The number of reduced metal atoms exposed on the surface increased for the Rh-promoted by: Table 2 listed the performance of monolith catalyst in steam reforming at different steam/carbon ratios.

In these tests, GHSV keeps consistent and the value is h The conversion of methane increases with the increase of steam/carbon ratio. Conversion of methane approaches % approximately when the steam/carbon ratio is 3, compared Author: Peng J(彭军).

Wu G, Li S, Zhang C, Wang T, Gong J () Glycerol steam reforming over perovskite-derived nickel-based catalysts. Appl Catal B-Environ – CrossRef Google Scholar Cited by: 1.

Zeppieri et al. [7] investigate the kinetics of methane steam reforming reaction over a rhodium-perovskite catalyst of formula BaRh x Zr (1Àx) O 3 at atmospheric pressure and in the temperature.

Synthesis and characterization of a LaNiO3 perovskite as precursor for methane reforming reactions catalysts Article in Applied Catalysis B Environmental January with Reads. Jun Woo Nam, Kwan-Young Lee, in Studies in Surface Science and Catalysis, Methane dry reforming with carbon dioxide was performed using perovskite-type mixed oxide catalysts, La 1 -x Sr x NiO 3 (x = 0, ) and La 2 -x Sr x NiO 4 (x = ) at °C and atmospheric pressure.

Catalytic activity and resistance against coke formation were varied with the type of perovskite and the. Catalytic evaluation of perovskite-type oxide LaNi 1 xRu xO 3 in methane dry reforming Genira Carneiro de Araujoa,b, Sania Maria de Limac, Jose´ Mansur Assafc, Miguel Antonio Pen˜ab, Jose´ Luı´s Garcı´a Fierrob, Maria do Carmo Rangela,* a Grupo de Estudos em Cine ´tica e Catalise, Universidade Federal da Bahia, Campus Universitario de Ondina, Federac¸a˜o.

The activity and selectivity of the methane-steam reaction has been studied in a gradientless reactor at atmospheric pressure and – °C. Differences were found in the course of the reaction on Pd relative to other metals, viz.

Ni, Pt and Ru, and an Cited by: 4. Steam methane reforming is the most common process for the production of hydrogen and synthesis gas, but catalyst deactivation may occur during methane steam reforming with Ni catalysts since it.

Methanol steam reforming (MSR) catalysts are derived from perovskite-type oxides LaCo 1−x−y Pd x Zn y O 3±δ by reductive pretreatment. The unsubstituted LaCoO 3±δ (LCO) and LaCo 1−x−y Pd x Zn y O 3±δ (Co substituted with Pd and/or Zn) are synthesized by a citrate method and characterized by different techniques.

The perovskite-type oxides exhibit a rhombohedral crystal structure. The dry reforming of coke oven gas (COG) to produce syngas was performed over LaSrNixCo1-xO3 catalysts in a fixed-bed reactor at ℃. These perovskite-type oxides were synthesized using a. Catalytic steam reforming of methane in an electric field (named "electreforming") was conducted over metal catalysts supported on CeO 2 or Ce x Zr 1-x O 2 at low temperatures such as K where conventional catalytic reactions hardly proceeded.

The conversion of methane was greatly increased by weak and effective application of an electric field to the catalyst by: Chemical-looping steam methane reforming (CL-SMR) is a novel method proposed on the base of chemical looping combustion (CLC) technology.

In the CL-SMR scheme, methane is partially oxidized to syngas (H 2 /CO=) by the lattice oxygen in reformer reactor in the absence of gaseous oxidant, and then the reduced oxygen carrier is oxidized by steam to produce hydrogen in steam by: 5.

Abstract Deactivation of supported metal catalysts by carbon or coke formation is a problem of serious magnitude in steam reforming, methanation, and other important catalytic processes.

Its causes are generally threefold: (1) fouling of the metal surface, (2) blockage of catalysts pores and voids, and/or (3) actual physical disintegration of the catalyst by:   Steam reforming of methane for the purpose of hydrogen production was performed using nickel catalysts supported on a variety of perovskites, including LaAlO 3, LaFeO 3, SrTiO 3, BaTiO 3, La Ba Co Fe Oto compare the catalytic activity and resistance to coking of these catalysts to those of the conventional Ni/α-Al 2 O 3 catalyst.

Ni/LaAlO 3 and Ni/SrTiO 3 showed high Cited by:. CO 2 reforming of methane combined with steam reforming or partial oxidation of methane to syngas over NdCoO 3 perovskite-type mixed metal-oxide catalyst, Applied Ene p– [5] Alieh Khalesi, Arandiyan, R., Hamid and Parvari, Matin, Cited by:   In this study, nano catalyst LaNiO 3 with perovskite structure was synthesized using the citrate sol–gel method in the combined methane reforming with CO 2 and O 2 (CRM).

The effects of increasing the surface area of the LaNiO 3 perovskite on the catalytic activity were investigated by changing the method of preparing and creating holes in the surface of the by: 1.A series of perovskite-type oxides catalyst LaAl1-xNixO3 (0≤x≤1) and modified by substitute noble metal LaAlNiMO3 (M=Pt, Pd, Ru, Rh, Ir) prepared by the sol-gel method shows high activity, stability, good resistance to carbon deposition and sintering of the catalyst for the reforming of methane reaction.

The reaction was studied under continuous flow using a mixture of CH4:CO2=Cited by: 1.