Characterization and Catalytic Behaviour of Co(PO)–AlPO Catalysts
Co 3 (PO 4 ) 2 , AlPO 4 and the binary system Co 3 (PO 4 ) 2 -AlPO 4 with different compositions were prepared by the coprecipitation method. The structural properties of these samples were determined using XRD, DTA and FT-IR techniques. The textural properties were determined from the adsorption of...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
1998-04-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/026361749801600405 |
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| _version_ | 1832544672213368832 |
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| author | M.R. Mostafa F.Sh. Ahmed |
| author_facet | M.R. Mostafa F.Sh. Ahmed |
| author_sort | M.R. Mostafa |
| collection | DOAJ |
| description | Co 3 (PO 4 ) 2 , AlPO 4 and the binary system Co 3 (PO 4 ) 2 -AlPO 4 with different compositions were prepared by the coprecipitation method. The structural properties of these samples were determined using XRD, DTA and FT-IR techniques. The textural properties were determined from the adsorption of nitrogen at 77 K. The surface acidity was measured by a calorimetric titration method. The samples were tested as catalysts in the dehydration of ethanol and isopropanol using a pulse microcatalytic technique. The data obtained from XRD and FT-IR indicate the amorphous structures of the prepared catalysts. An increase in Co 3 (PO 4 ) 2 content led to a decrease in the surface area and in the total pore volume and an increase in the mean pore radius. The surface acidity of the catalyst depends on the chemical composition; the surface acidity increased with an increase in the AlPO 4 content. The dehydration temperature and the distribution of acid sites are important parameters in determining the selectivity and activity of the catalyst. |
| format | Article |
| id | doaj-art-322fdaee96fb41b999fe17061ead20d6 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 1998-04-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-322fdaee96fb41b999fe17061ead20d62025-02-03T10:07:35ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40381998-04-011610.1177/026361749801600405Characterization and Catalytic Behaviour of Co(PO)–AlPO CatalystsM.R. MostafaF.Sh. AhmedCo 3 (PO 4 ) 2 , AlPO 4 and the binary system Co 3 (PO 4 ) 2 -AlPO 4 with different compositions were prepared by the coprecipitation method. The structural properties of these samples were determined using XRD, DTA and FT-IR techniques. The textural properties were determined from the adsorption of nitrogen at 77 K. The surface acidity was measured by a calorimetric titration method. The samples were tested as catalysts in the dehydration of ethanol and isopropanol using a pulse microcatalytic technique. The data obtained from XRD and FT-IR indicate the amorphous structures of the prepared catalysts. An increase in Co 3 (PO 4 ) 2 content led to a decrease in the surface area and in the total pore volume and an increase in the mean pore radius. The surface acidity of the catalyst depends on the chemical composition; the surface acidity increased with an increase in the AlPO 4 content. The dehydration temperature and the distribution of acid sites are important parameters in determining the selectivity and activity of the catalyst.https://doi.org/10.1177/026361749801600405 |
| spellingShingle | M.R. Mostafa F.Sh. Ahmed Characterization and Catalytic Behaviour of Co(PO)–AlPO Catalysts Adsorption Science & Technology |
| title | Characterization and Catalytic Behaviour of Co(PO)–AlPO Catalysts |
| title_full | Characterization and Catalytic Behaviour of Co(PO)–AlPO Catalysts |
| title_fullStr | Characterization and Catalytic Behaviour of Co(PO)–AlPO Catalysts |
| title_full_unstemmed | Characterization and Catalytic Behaviour of Co(PO)–AlPO Catalysts |
| title_short | Characterization and Catalytic Behaviour of Co(PO)–AlPO Catalysts |
| title_sort | characterization and catalytic behaviour of co po alpo catalysts |
| url | https://doi.org/10.1177/026361749801600405 |
| work_keys_str_mv | AT mrmostafa characterizationandcatalyticbehaviourofcopoalpocatalysts AT fshahmed characterizationandcatalyticbehaviourofcopoalpocatalysts |