Platinum surface complexes as precursors for H–O recombination catalysts
In this work, the adsorption of platinum (II, IV) chloride complexes from acidic solutions on silica gel modified with quaternary ammonium salts (QAS) was studied. The uptake of the platinum chloride complexes is caused by the formation of ionic (QAS + ) 2 [PtCl x ] 2− ( x = 4, 6) associates on the...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2017-09-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/0263617417708430 |
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| author | Olesya B Volovenko Olga A Zaporozhets Vladyslav V Lisnyak Olga Yu Boldyrieva |
| author_facet | Olesya B Volovenko Olga A Zaporozhets Vladyslav V Lisnyak Olga Yu Boldyrieva |
| author_sort | Olesya B Volovenko |
| collection | DOAJ |
| description | In this work, the adsorption of platinum (II, IV) chloride complexes from acidic solutions on silica gel modified with quaternary ammonium salts (QAS) was studied. The uptake of the platinum chloride complexes is caused by the formation of ionic (QAS + ) 2 [PtCl x ] 2− ( x = 4, 6) associates on the surface of silica gel. The isotherms of adsorption are fitted by the Langmuir model. The maximum capacity for [PtCl 4 ] 2− and [PtCl 6 ] 2− is 0.99 and 1.13 mmol/g, correspondingly. The respective adsorption constants K L = 6.8 and 10 × 10 5 l/mol prove the high affinity of the adsorbates to the QAS-modified surface. Platinum metal nanoparticles supported on the surface of the silica gel were prepared by reducing the adsorbed platinum (II, IV) complexes. Such nanoparticles functioning at the moderate temperature regime have demonstrated a reasonable catalytic activity for the hydrogen and oxygen recombination, and an excellent stability over 35 cycles of the reaction. |
| format | Article |
| id | doaj-art-a778ca6f25cd4aff81263b726bc3db65 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2017-09-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-a778ca6f25cd4aff81263b726bc3db652025-02-03T10:08:01ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382017-09-013510.1177/0263617417708430Platinum surface complexes as precursors for H–O recombination catalystsOlesya B VolovenkoOlga A ZaporozhetsVladyslav V LisnyakOlga Yu BoldyrievaIn this work, the adsorption of platinum (II, IV) chloride complexes from acidic solutions on silica gel modified with quaternary ammonium salts (QAS) was studied. The uptake of the platinum chloride complexes is caused by the formation of ionic (QAS + ) 2 [PtCl x ] 2− ( x = 4, 6) associates on the surface of silica gel. The isotherms of adsorption are fitted by the Langmuir model. The maximum capacity for [PtCl 4 ] 2− and [PtCl 6 ] 2− is 0.99 and 1.13 mmol/g, correspondingly. The respective adsorption constants K L = 6.8 and 10 × 10 5 l/mol prove the high affinity of the adsorbates to the QAS-modified surface. Platinum metal nanoparticles supported on the surface of the silica gel were prepared by reducing the adsorbed platinum (II, IV) complexes. Such nanoparticles functioning at the moderate temperature regime have demonstrated a reasonable catalytic activity for the hydrogen and oxygen recombination, and an excellent stability over 35 cycles of the reaction.https://doi.org/10.1177/0263617417708430 |
| spellingShingle | Olesya B Volovenko Olga A Zaporozhets Vladyslav V Lisnyak Olga Yu Boldyrieva Platinum surface complexes as precursors for H–O recombination catalysts Adsorption Science & Technology |
| title | Platinum surface complexes as precursors for H–O recombination catalysts |
| title_full | Platinum surface complexes as precursors for H–O recombination catalysts |
| title_fullStr | Platinum surface complexes as precursors for H–O recombination catalysts |
| title_full_unstemmed | Platinum surface complexes as precursors for H–O recombination catalysts |
| title_short | Platinum surface complexes as precursors for H–O recombination catalysts |
| title_sort | platinum surface complexes as precursors for h o recombination catalysts |
| url | https://doi.org/10.1177/0263617417708430 |
| work_keys_str_mv | AT olesyabvolovenko platinumsurfacecomplexesasprecursorsforhorecombinationcatalysts AT olgaazaporozhets platinumsurfacecomplexesasprecursorsforhorecombinationcatalysts AT vladyslavvlisnyak platinumsurfacecomplexesasprecursorsforhorecombinationcatalysts AT olgayuboldyrieva platinumsurfacecomplexesasprecursorsforhorecombinationcatalysts |