A Novel Process for Methanol Synthesis. Progress Report, December 1, 1992--February 28, 1993 PDF Download
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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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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 : Power resources
Languages : en
Pages : 438
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Languages : en
Pages : 11
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Book Description
A bench-scale reactor is being used to study the conversion of synthesis gas to methanol (MeOH) by a novel process. In previous reports, we provided evidence that the reaction takes place in two steps. A molecule of MeOH is first carbonylated to form methyl formate (MeF) which then reacts with H2 to form two molecules of MeOH. The second reaction occurs on the surface of a heterogeneous catalyst such as copper chromite, while the first reaction requires a homegenous catalyst such as potassium methoxide (KOMe) and takes place in a non-equilibrium region in the vicinity of the heterogeneous catalyst. A synergism between the two catalysts enhances the rate of MeOH formation. In this quarter, we studied the effect of reaction conditions on the rate of formation of MeF and the effect of CO2 concentration in the feed gas on the rate of MeOH synthesis. Kinetic studies were also initiated and rate expressions were examined.
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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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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.
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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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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 (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 takng place close and the hydrogenolysis reaction taking place on the surface of the copper chromate. The interaction between the two catalyst enhances the rate of MeOH formation. In the last quarter, we showed that under present operating conditions, the methyl formate (MeOH) concentration is not in equilibrium and hence both the carboxylation and the hydrogenolysis reactions influence the rate of MEOH formation. The activities of other alkali and alkaline earth compounds as catalysts, the effect of water and the controlling reaction in the concurrent synthesis is described in this report.
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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 : 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 : Research
Languages : en
Pages : 1190
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Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
