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|---|---|---|---|
| 001 | 599074 | ||
| 005 | 20231030033816.0 | ||
| 035 | _a(RuTPU)RU\TPU\tpu\22921 | ||
| 035 | _aRU\TPU\tpu\22920 | ||
| 090 | _a599074 | ||
| 100 | _a20130324a2005 k y0engy50 ba | ||
| 101 | 0 | _aeng | |
| 102 | _aNL | ||
| 200 | 1 |
_aXPS investigations of VPO catalysts under reaction conditions _fE. Kleimenov [et al.] |
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| 330 | _aThe surface of vanadium phosphorus oxide (VPO) catalysts was investigated by (in situ) X-ray photoelectron spectroscopy (XPS) under reaction conditions. Two differently prepared VPO samples with similar catalytic activities showed different spectral behaviour while the catalytic conditions were changed. The vanadium surface oxidation state of both catalysts was found to have the same value close to 4 under reaction conditions while the oxidation state of vanadium in deeper layers differed significantly. The experimental results suggest that in VPO the catalytically active species located in the topmost surface layers (up to 1 nm depth) are only weakly related to the structure of deeper layers. Based on our results we suggest that the deeper layers act as a substrate material only and can be different from the surface. | ||
| 333 | _aВ фонде НТБ ТПУ отсутствует | ||
| 461 |
_tSurface science _d1964- |
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| 463 |
_tVol. 575, iss. 1-2 _vP. 181-188 _d2005 |
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| 610 | 1 | _aтруды учёных ТПУ | |
| 701 | 1 |
_aKleimenov _bE. |
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| 701 | 1 |
_aBluhm _bH. |
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| 701 | 1 |
_aHävecker _bM. |
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| 701 | 1 |
_aKnop-Gericke _bA. |
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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 _4070 |
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| 701 | 1 |
_aTeschner _bD. |
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| 701 | 1 |
_aLopez-Sanchez _bJ. A. |
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| 701 | 1 |
_aBartley _bJ. K. |
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| 701 | 1 |
_aHutchings _bG. J. |
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| 701 | 1 |
_aSchlögl _bR. |
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| 801 | 1 |
_aRU _b63413507 _c20130226 |
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| 801 | 2 |
_aRU _b63413507 _c20130324 _gRCR |
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| 942 | _cBK | ||