Temperature-induced transformations in CoAPO-34 molecular sieve: A combined in situ X-ray diffraction and FTIR study

Article Abstract:

An in situ X-ray synchrotron powder diffraction augmented with Fourier transform (FT) IR analysis is used to study the thermally induced processes of CoAPO-34, an aluminophosphate molecular sieve with chabasite-type structure. The results show that the bridged Co(super 2+)-O(H)-P hydroxyls are present after morpholine removal.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Aluminum Compounds, Analysis, Thermal properties, X-ray analysis

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Cation migration and structural modification of Co-exchanged ferrierite upon heating: A time-resolved X-ray powder diffraction study

Article Abstract:

The in situ time-resolved analysis of Co-exchanged synthetic ferrierite is performed in the range 53-810 degree C by Rietveld refinements of powder diffraction data. It is reported that five cation sites are localized above 500 degree C.

Industrial Gas Manufacturing, Industrial gases, Carbon Dioxide, Spectra, Structure

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Combined single-crystal X-ray diffraction and FTIR study of morpholinium-water molecular complexes embedded in a chabasite network

Article Abstract:

The location of morpholinium-water molecular complexes with the chabasite network is studied through X-ray diffraction and FTIR spectroscopy. The vibrational modes of the isolated organic molecules are investigated.

Science & research, Research, Observations, Molecular structure, Chemistry, Physical and theoretical, Physical chemistry

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