A Novel Process for Manufacture of Methanol. Progress Report, December 1, 1989--February 28, 1990 PDF Download
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Languages : en
Pages : 11
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A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol by a novel process. During the last quarter, the effect of potassium methoxide and Cu-chromite loading on the MeOH formation rate was investigated. The rate obtained with Cu-chromite was compared to that using Cu-ZnO as catalyst. Work also continued on the modification of the experimental equipment to permit on-line monitoring of liquid and gas compositions.
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Category :
Languages : en
Pages : 11
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Book Description
A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol by a novel process. During the last quarter, the effect of potassium methoxide and Cu-chromite loading on the MeOH formation rate was investigated. The rate obtained with Cu-chromite was compared to that using Cu-ZnO as catalyst. Work also continued on the modification of the experimental equipment to permit on-line monitoring of liquid and gas compositions.
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Category :
Languages : en
Pages : 12
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Book Description
A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol by a novel process. During the last quarter, the effect of operating parameters such as temperature, pressure, feed H2/CO ratio and feed flow rate on the MeOH synthesis rate were investigated. The specific rate of MeOH synthesis was found to vary with gas feed rate -- an unexpected result. It is proposed that this is due to the presence of small amounts of an inhibiting agent which accumulates in the liquid at low flow rates. Work also continued on the modification of the experimental equipment to permit on-line monitoring of liquid and gas compositions.
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Languages : en
Pages : 8
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To determine the effect of alternate catalysts on the synthesis. This will include copper chromite catalysts impregnated with alkali metals such as potassium, rubidium and cesium as well as their use as homogenous catalysts in the form of methoxides or similar salts. The use of various copper chromite catalysts with different compositions will be studied: e.g. substituting barium for manganses in copper chromite catalyst has a beneficial effect. To determine the nature of the active catalysts in this reaction and the effect of deactivating agents such as CO2, H2O and CO. To determine the rate limiting steps in this reaction so that proper scale-up is possible. The effects of catalysts loading and reactor volume are of special importance. To develop mathematical models which can be used for prediction of rates of reaction and are suitable for scale-up of the reaction.
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Category : Power resources
Languages : en
Pages : 782
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Category :
Languages : en
Pages : 5
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Book Description
A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol (MeOH) in the liquid phase by a novel process. In previous report, we provided evidence for a two step reaction in series, the carbonylation reaction mainly taking place close to the copper chromite surface, and the hydrogenolysis reaction taking place on the surface of the copper chromite. The interaction between the two catalysts enhanced the rate of MeOH formation. We have previously shown that, under present operating conditions, the methyl formate (MeF) concentration is not in equilibrium. The presence of H2O results in a drop in the rate of MeF generation by the carbonylation reaction. In this quarter, preparation of the final report was continued.
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Languages : en
Pages : 12
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Book Description
A bench-scale reactor is being used to study the conversion of synthesis gas to methanol (MEOH) in the liquid phase by a novel method. In previous reports, we provided evidence for a two step reaction consisting of a carbonylation reaction taking place mainly in the ''film'' close to a copper chromite surface followed by a hydrogenolysis reaction taking place on the surface of the copper chromite. The interaction between the two catalysts enhances the rate of methanol formation. In this quarter, we reexamined the equilibrium concentration for methyl formate and obtained data at higher loadings of copper chromite.
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Category :
Languages : en
Pages : 9
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Book Description
A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol (MeOH) in the liquid phase by a novel process. In previous reports, we provided evidence for a two step reaction in series, the carbonylation reaction mainly taking place close to the copper chromite surface, and the hydrogenolysis reaction taking place on the surface of the copper chromite. The interaction between the two catalysts enhances the rate of MeOH formation. We have previously shown that, under present operating conditions, the methyl formate (MeF) concentration is not in equilibrium. The presence of H2O results in a drop in the rate of MeF generation by the carbonylation reaction. In this quarter work has continued on the effect of water on the reaction.
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Category :
Languages : en
Pages : 14
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Book Description
A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol in the liquid phase by a novel process. In previous reports, we provided evidence for a two step reaction in series, the carbonylation reaction mainly taking place close to the copper chromate surface, and the hydrogenolysis reaction taking place on the surface of the copper chromate. The interaction between thetwo catalysts enhances the rate of MeOH formation. we have previously shown that under present operating conditions, the methyl formate concentration is not in equilibrium. The presence of H2O results in a drop in the rate of MeF generation by the carbonylation reaction. In this quarter, we examined schemes to reduce the H2O level in the reactor and enhance the rate of MeF formation. An increased methyl formate concentration would lead to increased methanol synthesis rates.
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Category :
Languages : en
Pages : 20
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Book Description
A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol by a novel process. In previous reports, we provided evidence for a two step reaction in series: the carbonylation of methanol to methyl formate taking place in a non-equilibrium region in the vicinity of the copper chromite surface, and the hydrogenolysis of methyl formate to methanol taking place on the surface of the copper chromite. The synergism between the two catalysts enhances the rate of methanol formation. In this quarter, we tested several copper chromites (with different surface areas and stabilizing agents) on the rate of methanol synthesis. It seems likely that pore diffusion limitations control the hydrogenolysis reaction since the rate of methanol formation is proportional to the square root of the copper chromite surface area. Elemental analyses using Inductively Coupled Plasma analysis and pore size distribution analysis of copper chromite were carried out.
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Category :
Languages : en
Pages : 12
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Book Description
A bench-scale reactor is being used to conduct studies of the conversion of synthesis gas to methanol (MeOH) by a novel process. In previous reports, we provided evidence for a two-step reaction in series, the carbonylation reaction taking place mainly in a non-equilibrium region in the vicinity of the copper chromite surface, and the hydrogenolysis reaction taking place on the surface of the copper chromite. Interaction between the two catalysts enhances the rate of methanol formation. In this quarter, we investigated the effect of pore diffusion on reaction rate and obtained an expression for the rate of reaction for the methanol/methyl formate concurrent synthesis.
