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P R Mussini

Publications and source records attributed to P R Mussini.

4 recordsLinked to original sources
PubMed1999

Batch effects, water content and aqueous/organic solvent reactivity of microcrystalline cellulose samples.

The structural, morphological and surface features on two MCC powders of the same commercial type (Avicel PH 102), but coming from different countries (The Netherlands and Hong Kong) and vendors (DMV International and Mingtai Chemical Co., Ltd., respectively), have been investigated and compared, by means of the X-ray diffraction, SEM and BET and polymerization degree determination. TGA and water sorption from saturated vapor experiments have been applied to characterize and compare the MCC/water interactions of the two samples. The results were integrated by studies of preferential sorption from binary aqueous/organic solvents.

Acetonitriles↗
PubMedDate not supplied

Organic halide electroreduction on silver.

Silver, whose extraordinary electrocatalytical properties for organic halide reduction have been recently evidenced, has been used as cathode material for systematic preparative electrolyses in membrane-divided cells. To better elucidate the substrate role on the remarkable positive shift of reduction potentials, and on the "cage effect" i.e. the promotion of intermolecular reaction on adsorbed intermediates, three halide substrate patterns are here compared in terms of both voltammetric characterization and preparative electroreduction products: aliphatic halides (adamantanes), aromatic halides (phenols) and anomeric glycosyl halides. The preparative electroreductions result mainly in dimerization in the case of glycosyl halides, in H-->Br substitution in the case of bromophenols, in dimerization + substitution in the case of haloadamantanes. The product analysis, both at the end of the reaction and at intermediate times, allows discussing the reaction pathways in terms of intermediate stability and of active surface accessibility. The possibility of complete dehalogenation on a wider substrate variety with remarkably lower energy consumption and almost quantitative current yields makes the process potentially very interesting for environmental purposes.

Adamantane↗
PubMedDate not supplied

The rH index for quality and environmental controls: standards and application procedures.

The quantity rH, an index of the reducing power of a redox system is, in conceptual and operational terms, coordinatively linked with the two familiar electroanalytical quantities: redox potential (EO/R) and pH, and has recently become important in quality and environmental controls (hydrographic network, human consumption waters, industrial effluents, etc.). It has some significant problems of standardization and methodological applications, especially on passing from pure water medium to aqueous-organic media, and the results of the most recent researches are here presented.

Buffers↗