Green Oxidation of n-Octanol on Supported Nanogold Catalysts: Formation of Gold Active Sites under Combined Effect of Gold Content, Additive Nature and Redox Pretreatment
| Parent link: | ChemCatChem Vol. 11, iss. 6.— 2019.— [P. 1615-1624] |
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| Korporativna značnica: | |
| Drugi avtorji: | , , , , , , , , , |
| Izvleček: | Title screen The combined influence of gold content (0.5 or 4?wt.?%), modifying additives (La or Ce oxides) and redox pretreatments (H2 or O2) on catalytic properties and formation of active sites of Au/TiO2 in the selective oxidation of n?octanol under mild conditions was studied. Samples were characterized by BET, XRD, EDX, ICP, TEM, STEM?HAADF, CO2?TPD, H2?TPR and XPS methods. The order of catalytic activity depended on the support nature for all treated samples, as follows: Au/La2O3/TiO2>Au/CeO2/TiO2>Au/TiO2. The catalytic activity enhanced with the increase of gold loading in the samples with hydrogen pretreatment, while after the oxidative pretreatment of the catalysts the opposite dependence of the activity with the gold content was found. This catalytic behavior was explained by a change in the surface concentration of monovalent gold ions, which seemed to be the active sites. The most active catalyst, 0.5?% Au/La2O3/TiO2, pretreated in oxidative atmosphere, had the highest surface concentration of monovalent gold ions. Режим доступа: по договору с организацией-держателем ресурса |
| Jezik: | angleščina |
| Izdano: |
2019
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| Teme: | |
| Online dostop: | https://doi.org/10.1002/cctc.201801566 |
| Format: | Elektronski Book Chapter |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=659720 |
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| 200 | 1 | |a Green Oxidation of n-Octanol on Supported Nanogold Catalysts: Formation of Gold Active Sites under Combined Effect of Gold Content, Additive Nature and Redox Pretreatment |f E. G. Pakrieva [et al.] | |
| 203 | |a Text |c electronic | ||
| 300 | |a Title screen | ||
| 320 | |a [References: 47 tit.] | ||
| 330 | |a The combined influence of gold content (0.5 or 4?wt.?%), modifying additives (La or Ce oxides) and redox pretreatments (H2 or O2) on catalytic properties and formation of active sites of Au/TiO2 in the selective oxidation of n?octanol under mild conditions was studied. Samples were characterized by BET, XRD, EDX, ICP, TEM, STEM?HAADF, CO2?TPD, H2?TPR and XPS methods. The order of catalytic activity depended on the support nature for all treated samples, as follows: Au/La2O3/TiO2>Au/CeO2/TiO2>Au/TiO2. The catalytic activity enhanced with the increase of gold loading in the samples with hydrogen pretreatment, while after the oxidative pretreatment of the catalysts the opposite dependence of the activity with the gold content was found. This catalytic behavior was explained by a change in the surface concentration of monovalent gold ions, which seemed to be the active sites. The most active catalyst, 0.5?% Au/La2O3/TiO2, pretreated in oxidative atmosphere, had the highest surface concentration of monovalent gold ions. | ||
| 333 | |a Режим доступа: по договору с организацией-держателем ресурса | ||
| 461 | |t ChemCatChem | ||
| 463 | |t Vol. 11, iss. 6 |v [P. 1615-1624] |d 2019 | ||
| 610 | 1 | |a электронный ресурс | |
| 610 | 1 | |a труды учёных ТПУ | |
| 610 | 1 | |a effect of pretreatments | |
| 610 | 1 | |a gold catalyst active sites | |
| 610 | 1 | |a gold loading | |
| 610 | 1 | |a n-octanol selective oxidation | |
| 610 | 1 | |a support modifiers | |
| 610 | 1 | |a предварительная обработка | |
| 610 | 1 | |a золото | |
| 610 | 1 | |a окисление | |
| 701 | 1 | |a Pakrieva |b E. G. |c Chemical Engineer |c Engineer of Tomsk Polytechnic University |f 1989- |g Ekaterina Germanovna |3 (RuTPU)RU\TPU\pers\33273 |9 17018 | |
| 701 | 1 | |a Kolobova |b E. N. |c Chemical Engineer |c design engineer of Tomsk Polytechnic University |f 1989- |g Ekaterina Nikolaevna |3 (RuTPU)RU\TPU\pers\34488 |9 17871 | |
| 701 | 1 | |a Mamontov |b G. Ya. |c mathematician |c Professor of Tomsk Polytechnic University, doctor of physical and mathematical Sciences |f 1945- |g Gennady Yakovlevich |3 (RuTPU)RU\TPU\pers\35353 | |
| 701 | 1 | |a Bogdanchikova |b N. | |
| 701 | 1 | |a Farias |b M. H. |g Mario | |
| 701 | 1 | |a Pascual |b L. | |
| 701 | 1 | |a Cortes |b C. V. |g Corberan | |
| 701 | 1 | |a Martinez |b G. S. |g Gonzalez | |
| 701 | 1 | |a Carabineiro |b Sa. C. | |
| 701 | 1 | |a Pestryakov |b A. N. |c Chemist |c Professor of Tomsk Polytechnic University, Doctor of Chemical Science |f 1963- |g Aleksey Nikolaevich |3 (RuTPU)RU\TPU\pers\30471 |9 14796 | |
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