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...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publications
2017-09-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1177/0263617417708430 |
| _version_ | 1811153615420653568 |
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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. |
| first_indexed | 2024-03-07T18:57:36Z |
| format | Article |
| id | doaj.art-a778ca6f25cd4aff81263b726bc3db65 |
| institution | Directory Open Access Journal |
| issn | 0263-6174 2048-4038 |
| language | English |
| last_indexed | 2024-03-07T18:57:36Z |
| publishDate | 2017-09-01 |
| publisher | SAGE Publications |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj.art-a778ca6f25cd4aff81263b726bc3db652024-03-02T00:07:47ZengSAGE PublicationsAdsorption 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 |
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