The influence of water vapor on the decomposition of carbon monoxide on reduced iron oxide
| Autor: | G. R. St. Pierre, N. F. Kolesnik |
|---|---|
| Rok vydání: | 1980 |
| Předmět: |
Inorganic chemistry
Metals and Alloys Oxide Analytical chemistry chemistry.chemical_element Direct reduced iron Condensed Matter Physics Decomposition chemistry.chemical_compound chemistry Mechanics of Materials Materials Chemistry medicine Ferric Porosity Carbon Water vapor Carbon monoxide medicine.drug |
| Zdroj: | Metallurgical Transactions B. 11:285-289 |
| ISSN: | 2379-0229 0360-2141 |
| DOI: | 10.1007/bf02668413 |
| Popis: | Sintered, fine-grained ferric oxide (Fe2O3) with a porosity of 11.4 pct was used as a solid material in the present investigation of the rate of carbon monoxide decomposition in the presence of water vapor at temperatures of 430, 475, 513, 550 and 590‡C. It was found that small additions of H2O markedly enhance the rate of carbon deposition and that there is an optimum content of H2O in CO-H2O mixtures which provides the maximum rate of carbon deposition at each temperature. According to SEM observations of the reaction products, water vapor affects significantly not only the rate of the process but also the structure of the carbon deposited. For % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpiZxe9LqFHe9Lq% pepeea0xd9q8as0-LqLs-Jirpepeea0-as0Fb9pgea0lrP0xe9Fve9% Fve9qapdbaqaaeGaciGaaiaabeqaamaabaabaaGcbaacbaGaa8huam% aaBaaaleaacaWFibWaaSbaaWqaaiaa-jdaaeqaaSGaa83taaqabaqe% feKCPfgBaGqbaOGaa4hiaiabgwMiZkaa+bcacaWFqbWaaSbaaSqaai% aa-HeadaWgaaadbaGaa8NmaaqabaWccaWFpbGaa8hkaiaa-9gacaWF% WbGaa8hDaiaa-Lcaaeqaaaaa!48A9! $$P_{H_2 O} \geqslant P_{H_2 O(opt)} $$ , filamentary carbon is formed predominantly while at low values of % MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGqiVu0Je9sqqrpepC0xbbL8F4rqqrFfpiZxe9LqFHe9Lq% pepeea0xd9q8as0-LqLs-Jirpepeea0-as0Fb9pgea0lrP0xe9Fve9% Fve9qapdbaqaaeGaciGaaiaabeqaamaabaabaaGcbaacbiGaa8huam% aaBaaaleaaieaacaGFibWaaSbaaWqaaiaa+jdaaeqaaSGaa43taaqa% baaaaa!3BEB! $$P_{H_2 O} $$ the formation of flake carbon is favored. The results obtained have been explained with a suggestion on the possible formation of an intermediate complex [CHO]* on the catalytical surface. |
| Databáze: | OpenAIRE |
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