Infrared spectroscopy study of aldehydes adsorbed on Rh-Sn bimetallic systems: selective activation of aldehydes by tin
Article Abstract:
Infrared spectra of propionaldehyde was investigated over silica-supported Rh-Sn bimetallic catalysts. Two absorption bands of the carbonyl group were seen at 1670 and 1720/cm and the aldehyde hydrogen (-CH=O) was also seen at 2748 and 2848/cm over the Sn/Rh/SiO2 catalysts on which propionaldehyde was preadsorbed. The adsorbed species observed at 1670/cm in the infrared spectra was found to be one of the most effective surface adsorption states in the selective hydrogenation reaction of carbonyl groups in unsaturated compounds.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Observation of G-LE and LE-LC phase transitions of adsorbed 1-dodecanol monolayer from dynamic surface-tension profiles
Article Abstract:
Two phase transitions, G-LE and LE-LC, of the adsorbed monolayer of the soluble surfactant 1-dodecanol at the air-water interface were observed from the dynamic surface tension measurement by using a pendant bubble tensiometer. Two constant surface-tension (gamma) regions were detected in the dynamic surface-tension gamma(t) profiles of different surfactant concentrations at 20 degrees Celsius.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2004
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Effects of surface packing density of interfacial adsorbed monoclonal antibody on the binding of hormonal antigen human chorionic gonadotrophin
Article Abstract:
The interfacial adsorption of a mouse monoclonal antibody at the hydrophilic siliconoxide/water interface was studied by spectroscopic ellipsometry and neutron reflection. The neutron reflection revealed that the formation of a 40 Angstrom units uniform layer from the adsorbed antibody, indicating a flat-on orientation.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
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