aaelkhatib

Ahmed Ali Ahmed El-Khatib اد/ احمد الخطيب

Professor -

Faculty of science

Address: سوهاج ، مصر

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Publications Which contain the keyword: In situ

A flexible gas flow reaction cell for in situ x-ray absorption spectroscopy studies

2018-11-01 02:41:42 Keywords Micro-reactor, Operating conditions, Time resolved, In situ, Operando, Combined XAFS-XRD, Combined XAFS-MS, EXAFS, XANNES, X-ray absorption spectroscopy,
A flexible gas flow reaction cell for in situ x-ray absorption spectroscopy studies
A capillary-based sample environment with hot air blower and integrated gas system was developed at Diamond to conduct X-ray absorption spectroscopy (XAS) studies of materials under time-resolved, _in situ_ conditions. The use of a hot air blower, operating in the temperature range of 298-1173 K, allows introduction of other techniques e.g. X-ray diffraction (XRD), Raman spectroscopy for combined techniques studies. ... Read more

In situ spectroscopic investigations of MoOx/Fe2O3 catalysts for the selective oxidation of methanol

2018-11-01 02:56:32 Keywords In situ, Advanced spectroscopy, EXAFS, MoOx/Fe2O3, DRIFTS, Methanol oxidation,
In situ spectroscopic investigations of MoOx/Fe2O3 catalysts for the selective oxidation of methanol
Multicomponent oxide shell@core catalysts have been prepared, affording overlayers of MoO_x_ on Fe2O3. This design approach allows bulk characterization techniques, such as X-ray Absorption Fine Structure (XAFS), to provide surface sensitive information. Coupling this approach with _in situ_ methodologies provides insights during crucial catalytic processes. Calcination studies were followed by a combination of XAFS and Raman, and demonstrate that amorphous ... Read more

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