| 000 | 03875nlm1a2200553 4500 | ||
|---|---|---|---|
| 001 | 668222 | ||
| 005 | 20231030042141.0 | ||
| 035 | _a(RuTPU)RU\TPU\network\39446 | ||
| 035 | _aRU\TPU\network\21924 | ||
| 090 | _a668222 | ||
| 100 | _a20220701a2022 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 135 | _adrcn ---uucaa | ||
| 181 | 0 | _ai | |
| 182 | 0 | _ab | |
| 200 | 1 |
_aLiquid-phase oxidation of betulin over supported Ag NPs catalysts: Kinetic regularities, catalyst deactivation and reactivation _fA. R. Grigorjeva (Grigoreva), E. N. Kolobova, E. G. Pakrieva [et al.] |
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| 203 |
_aText _celectronic |
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| 300 | _aTitle screen | ||
| 320 | _a[References.: 74 tit.] | ||
| 330 | _aBetulin, being a pentacyclic triterpene alcohol and an extractive from birch bark, along with its oxo-derivatives, has a broad range of physiological properties of interest for synthesis of pharmaceuticals. Instead of oxidizing betulin with strong and toxic oxidizing agents the present study shows a possibility of using liquid-phase oxidation of betulin with air over supported Ag NPs catalysts as an alternative method for synthesis of its oxo-derivatives. Based on catalytic studies, high resolution transmission electron microscopy, X-ray photoelectron spectroscopy and ultraviolet-visible diffuse reflectance spectroscopy, the evolution of the surface of nanosilver catalysts during the catalysis was demonstrated, as well as under the impact of reactant gas composition. The kinetic regularities and causes of deactivation of supported Ag NPs catalysts were revealed. An approach to the regeneration of silver catalysts was proposed. Kinetic analysis with numerical data fitting was performed resulting in an adequate description of the concentration dependencies. | ||
| 333 | _aРежим доступа: по договору с организацией-держателем ресурса | ||
| 461 | _tMolecular Catalysis | ||
| 463 |
_tVol. 528 _v[112461, 32 p.] _d2022 |
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| 610 | 1 | _aэлектронный ресурс | |
| 610 | 1 | _aтруды учёных ТПУ | |
| 610 | 1 | _asilver catalyst | |
| 610 | 1 | _abetulin oxidation | |
| 610 | 1 | _akinetics | |
| 610 | 1 | _adeactivation | |
| 610 | 1 | _areactivation | |
| 610 | 1 | _aкатализаторы | |
| 610 | 1 | _aокисление | |
| 610 | 1 | _aбетулин | |
| 610 | 1 | _aкинетика | |
| 610 | 1 | _aдеактивация | |
| 610 | 1 | _aреактивация | |
| 701 | 1 |
_aGrigorjeva (Grigoreva) _bA. R. _cmedical technology specialist _cengineer of Tomsk Polytechnic University _f1995- _gAnna Romanovna _2stltpush _3(RuTPU)RU\TPU\pers\46789 |
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| 701 | 1 |
_aKolobova _bE. N. _cChemical Engineer _cdesign engineer of Tomsk Polytechnic University _f1989- _gEkaterina Nikolaevna _2stltpush _3(RuTPU)RU\TPU\pers\34488 |
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| 701 | 1 |
_aPakrieva _bE. G. _cChemical Engineer _cEngineer of Tomsk Polytechnic University _f1989- _gEkaterina Germanovna _2stltpush _3(RuTPU)RU\TPU\pers\33273 |
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| 701 | 1 |
_aMaki-Arvela _bP. |
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| 701 | 1 |
_aKuznetsova _bS. N. _cchemical technologist _cresearch engineer at Tomsk Polytechnic University _f1990- _gSvetlana Nikolaevna _2stltpush _3(RuTPU)RU\TPU\pers\47283 |
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| 701 | 1 |
_aCarabineiro _bS. A. K. _gSonia Alexandra Correia |
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| 701 | 1 |
_aBogdanchikova _bN. _gNina |
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| 701 | 1 |
_aPestryakov _bA. N. _cChemist _cProfessor of Tomsk Polytechnic University, Doctor of Chemical Science _f1963- _gAleksey Nikolaevich _2stltpush _3(RuTPU)RU\TPU\pers\30471 |
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| 701 | 1 |
_aMurzin _bD. Yu. _gDmitry Yurjevich |
|
| 712 | 0 | 2 |
_aНациональный исследовательский Томский политехнический университет _bИсследовательская школа химических и биомедицинских технологий _c(2017- ) _h8120 _2stltpush _3(RuTPU)RU\TPU\col\23537 |
| 801 | 2 |
_aRU _b63413507 _c20220701 _gRCR |
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| 856 | 4 | _uhttps://doi.org/10.1016/j.mcat.2022.112461 | |
| 942 | _cCF | ||