Reaction of Methane with Copper Oxide in a Fluidized Bed

Lewis, W. K.; Gilliland, E. R.; Reed, W. A.

doi:10.1021/ie50474a018

Cited by 81 publications

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“…It is therefore more advantageous to employ the fluid bed than fixed bed for an effective manufacture of synthesis gas. (2) It is necessary that a suitable quantity of metallic iron be present, besides a suitable quantity of wustite.…”

Section: Resultsmentioning

confidence: 99%

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Studies on Manufacture of Synthesis Gas from Natural Gas by Use of Metallic Oxides

Terasawa

Sakikawa

Shiba

1963

Bull. Japan Petrol. Inst.

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Summary:An experiment was made on the manufacture of carbon monoxide and hydrogen by partial oxidation of methane with a batch of iron oxidealumi.na powder in a fluid bed. Differences in the degree of reduction of iron oxide between the tipper and the lower parts of the bed, which was often observed in the case of a fixed bed, were eliminated and a synthesis gas was manufactured more efficiently than with a fixed bed. For an effective conversionn of methane into synthesis gas, wustite alone is not sufficient and the presence of a suitable quantity of metallic iron is necessary.Formation of gases when the carbon balance is lost involves the formation of carburization of iron. Water gas shift reaction was found to be in equilibrium, as in the case with a fixed bed. Some assumptions are made on the reaction mechanism to explain the experimental results qualitatively without inconsistency.

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Section: Resultsmentioning

confidence: 99%

“…Water vapor in the gas was then separated in the cooler, and taken out from another sample thief (2) for the analysis of other components.…”

Section: Methodsmentioning

confidence: 99%

Studies on Manufacture of Synthesis Gas from Natural Gas by Use of Metallic Oxides

Terasawa

Sakikawa

Shiba

1963

Bull. Japan Petrol. Inst.

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“…This process involved the reduction of the oxygen carriers using gaseous fuels and re-oxidizing them with steam to generate hydrogen in fi xed bed reactors and was widely practiced until the 1920s. In the 1950s, Lewis and Gilliland proposed the circulating chemical looping systems for copper-based oxygen carriers for pure CO 2 generation (Lewis et al 1949, 1951, Lewis and Gilliland 1950, 1954. Only certain sporadic chemical looping concepts were postulated until the 1980s when Richter and Knoche (1983) and Ishida et al (1987) revealed further energy and environmental benefi ts of these concepts.…”

Section: Type I Looping Particlesmentioning

confidence: 99%

“…Table 1 briefl y summarizes several representative chemical looping processes studied in the 20th century (Lane 1913, Lewis et al 1949, 1951, Lewis and Gilliland 1950, 1954, Dobbyn et al 1978. However, no chemical looping process using fossil fuels is currently under commercial operation.…”

Section: Introductionmentioning

confidence: 99%

Chemical looping processes — particle characterization, ionic diffusion-reaction mechanism and reactor engineering

Zeng

Luo

Sridhar

et al. 2012

Reviews in Chemical Engineering

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The chemical looping strategy for fossil energy applications promises to achieve an effi cient energy conversion system for electricity, liquid fuels, hydrogen, and/or chemical generation while economically separating CO 2 by looping reaction design in the process. Two types of chemical looping technologies have been developed based on two different reactions of chemical looping intermediates. Type I chemical looping systems utilize metal and metal oxide reductionoxidation properties to perform the looping reactions. Type II chemical looping systems utilize metal oxide and metal carbonate carbonation-calcination properties to perform the looping reactions. The type of metal or metal oxide along with their preparation methods for applications in both types of chemical looping systems plays signifi cant roles in the chemical looping technology performance. Understanding the reaction mechanism associated with looping intermediates in both types of reactions is important to the rate process of reactions, in turn affecting the design of the looping particles. Furthermore, as conversions of gaseous and solid reactants are closely associated with their contact modes, the intricate contact mode plays an important role in determining the reactant conversions and hence the solid reactant fl ux in the reactors. The purpose of this paper is thus to provide a perspective on the two key aspects of chemical looping technology, which are not well reported in the literature, namely, reaction mechanism and reactor engineering.

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“…(1). As K1 and K2 are equilibrium constants of the reactions (1) and (2) to which metallic oxides are not related, the following decision shall be brought from Eqs. (6), (7), and (8).…”

Section: Introductionmentioning

confidence: 99%

Studies on Manufacture of Synthesis Gas from Natural Gas by Use of Metallic Oxides

Terasawa

Sakikawa

Shiba

1961

Bull. Japan Petrol. Inst.

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Summary : Investigations on the manufacture of synthesis gas by direct partial oxidation of methane with metallic oxides in a fixed bed were made . From the equilibrium consideration and the experimental results, it was known that iron oxide-alumina was the most adequate oxygen carrier and the addition of alumina to iron oxide had effects on the promotion of reactivity.The oxygen carrier capable of producing carbon monoxide and hydrogen was of two stages Fe, while in the latter it was over the equilibrium value.In general, the degree of reduction of iron oxide was not uniform throughout the bed; the degree of reduction of the oxide at the inlet was larger than that at the outlet. Moreover, carbon monoxide and hydrogen formed at the inlet side of the bed might be further oxidized at the succeeding parts.Discussions are given on the conditions under which gases rich in carbon monoxide and hydrogen is obtainable.

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Reaction of Methane with Copper Oxide in a Fluidized Bed

Cited by 81 publications

References 0 publications

Studies on Manufacture of Synthesis Gas from Natural Gas by Use of Metallic Oxides

Studies on Manufacture of Synthesis Gas from Natural Gas by Use of Metallic Oxides

Chemical looping processes — particle characterization, ionic diffusion-reaction mechanism and reactor engineering

Studies on Manufacture of Synthesis Gas from Natural Gas by Use of Metallic Oxides

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