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Chemicals, plastics and rubber industries

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Can the three-coordinated MG site of MgO accommodate more than one CO molecule?

Article Abstract:

The IR spectra of CO adsorption at the MgO-h surface shows that the 2202 cm(super -1) band of the Co at the Mg3c sites gradually decreases upon increase of the pressure from 10(super -1) Torr. The results of energy and frequency calculations suggest that at about 10(super -1)Torr the adsorption of the second Co molecules at about 10(super -1) Torr the adsorption of the second CO molecules at the Mg3c sites occurs forming the new 2OC.Mg3c species.

Author: Pelmenschikov, Alexander, Morosi, Gabriele, Gamba, Aldo, Coluccia, Salvatore, Martra, Gianmario, Pettersson, Lars G.M.
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2000
All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Cobalt, Magnesium Compounds, Molecules, Magnesium trisilicate

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Investigations of the structure of H2O clusters adsorbed on TiO2 surfaces by near-infrared absorption spectroscopy

Article Abstract:

The overtone and combination bands of the fundamental vibration modes attributed to the H2O molecules adsorbed on a TiO2 surface could be observed in the near-infrared (NIR) region. The results reveal that H2O molecules absorbed on a TiO2 surface aggregate to form clusters due to the high surface tension of H2O arising from the intermolecular hydrogen bonds.

Author: Anpo, Masakazu, Coluccia, Salvatore, Martra, Gianmario, Takeuchi, Masato
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
Tin, Analysis, Water, Near infrared spectroscopy, Thermal properties, Adsorption

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Ni and CO used as probes of the amorphous silica surface: IR and theoretical studies of dicarbonyl Ni(super II) complexes

Article Abstract:

Ni(super II) ion and the CO molecule are used as successive probes of the local structure and reactivity of the silica surface. CO acts not as a chemical reactant but as a molecular probe of the coordination vacancies of the grafted Ni(super II)(sub 3c) ion under conditions that keep the metal oxidation state constant.

Author: Kermarec, Maggy, Che, Michel, Coluccia, Salvatore, Martra, Gianmario, Manceron, Laurent, Costa, Dominique
Publisher: American Chemical Society
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
Industrial sand, Silica & Silica Sand, Industrial Sand Mining, Silica, Oxidation-reduction reaction, Oxidation-reduction reactions, Nickel, Surface chemistry, Structure, Chemical properties, Silicon dioxide

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Subjects list: Research, Spectra
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