Unexpected interactions between sol-gel silica glass and guest molecules. Extraction of aromatic hydrocarbons into polar silica from hydrophobic solvents

Article Abstract:

A study is conducted to examine the entry of various aromatic organic compounds from a free solution into the monolith of sol-gel silica immersed in this solution. The results are in consistent with hydrogen bonding between the aromatic pi system in the solutes and the hydroxyl groups on the silica surface.

Industrial Organic Chemicals, Cyclic Crude and Intermediate Manufacturing, Aromatic Hydrocarbons, Molecules, Silica, Vitreous, Vitreous silica

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Influence of morphology on polar solvation dynamics in lecithin reverse micelles

Article Abstract:

A new headgroup-labeled probe molecule is synthesized in order to perform solvation dynamics experiments in the benzene/lecithin/water reverse micelles. The synthesis, coupling the standard solvation dynamics probe, coumarin 343, to phosphatidylethanolamine through an amide bond is presented.CHP

Petrochemical Manufacturing, Fats and Oils, Starch and Vegetable Fats and Oils Manufacturing, Benzene, Lecithin, Micelles, Chemical synthesis

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Electron spin resonance investigations on the location and reducibility of zirconium in mesoporous Zr-MCM-41 molecular sieves

Article Abstract:

Zirconium containing mesoporous MCM-41 molecular sieves with Si/Zr ratios of 96 (A), 55 (B), 39 (C) and 23 (D) are synthesized and characterized by X-ray diffraction. The XRD patterns indicate an increase in the d(sub 100) spacing with increasing Zr content.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), Zirconium, Usage, Electric properties, X-rays, X-ray diffraction, Electron paramagnetic resonance

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