Surface Properties of Rh/AlPO4 Catalyst Providing High Resistance to Sulfur and Phosphorus Poisoning
| العنوان: | Surface Properties of Rh/AlPO4 Catalyst Providing High Resistance to Sulfur and Phosphorus Poisoning |
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| المؤلفون: | Haris Puspito Buwono, Saki Minami, Masato Machida, Kosuke Uemura |
| المصدر: | Industrial & Engineering Chemistry Research. 54:7233-7240 |
| بيانات النشر: | American Chemical Society (ACS), 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | General Chemical Engineering, Phosphorus, Inorganic chemistry, chemistry.chemical_element, General Chemistry, Phosphate, Sulfur, Industrial and Manufacturing Engineering, Rhodium, Catalysis, chemistry.chemical_compound, Adsorption, chemistry, Dimethylphosphite, Lewis acids and bases |
| الوصف: | A rhodium catalyst supported on AlPO4 exhibited a much higher resistance to sulfur and phosphorus poisoning compared with a reference catalyst (Rh/Al2O3). The acidic surface of AlPO4 was effective in preventing the adsorption of sulfur oxides (SO2), whereas Lewis acid/base sites on Al2O3 favored SO2 adsorption followed by the formation of sulfite, leading to deterioration of the activity of Rh/Al2O3 for the model NO–CO–C3H6–O2 reaction. Similarly, the AlPO4 support suppressed the extent of phosphorus poisoning caused by dimethylphosphite (DMP) (CH3O)2POH, which was used as a model phosphorus source. A greater amount of inactive phosphate overlayers were deposited from the gas feed containing DMP and O2 on Rh/Al2O3 than Rh/AlPO4 because of the reaction between P2O5 vapors and Al2O3. Consequently, the active Rh surface was covered to a greater extent for Rh/Al2O3 than Rh/AlPO4. |
| تدمد: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.5b01720 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::60767ccb02696e2b6448d0a2859b8a19 https://doi.org/10.1021/acs.iecr.5b01720 |
| رقم الانضمام: | edsair.doi...........60767ccb02696e2b6448d0a2859b8a19 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15205045 08885885 |
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| DOI: | 10.1021/acs.iecr.5b01720 |