A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 10323-20-3, Name is D-Arabinose, molecular formula is C5H10O5. In an article, author is Yampolskii, YP,once mentioned of 10323-20-3, Product Details of 10323-20-3.
Study of high permeability polymers by means of the spin probe technique
The spin probe technique was systematically applied to study a family of high permeability and high free volume glassy polymers. Rotation correlation times tau(c) Or frequencies nu = 1/tau(c) of 2,2,6,6-tetramethylpyperidine-1-oxyl (TEMPO) were measured in amorphous teflons – random copolymers of tetrafluoroethylene and 2,2-bistrifluoromethyle-4,5-difluoro-1,3-dioxole, polyacetylenes and polynorbornenes. Polymers distinguished by unusually high, for the glassy state, permeability and free volume exhibit large rotational mobility of TEMPO. The correlation times correspond to fast rotation of the spin probe previously observed only in rubbery polymers, Correlations between the frequency nu and gas permeability and diffusion coefficients were observed. However, in some polymers, the spin probe’s rotation rate is also sensitive to side-chain local mobility, which does not affect translational diffusion coefficients of gas molecules in polymers. (C) 1999 Elsevier Science Ltd. All rights reserved.
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Reference:
1,3-Benzodioxole – Wikipedia,
,Dioxole | C3H4O2 – PubChem