Abstract
Solid-state NMR spectroscopy is used to study the proton transfer from aqueous sulfuric-acid solution to coal of early metamorphic stages and to SKN-2K porous carbon sorbent (the carbonized copolymer of 2-methyl-5-vinylpyridine and divinylbenzene). The proton transfer to a spherical polymer granule or a coal membrane is determined by electrolyte diffusion in the solid. In SKN-2K porous sorbent, the diffusion coefficient of sulfuric acid is 1 × 10–8 m2/s. When the electrolyte flux is perpendicular to the membrane plane, the diffusion coefficient of sulfuric acid is 1 × 10–13 m2/s.
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ACKNOWLEDGMENTS
The research was conducted on equipment at the Collective Use Center of the Federal Research Center of Coal and Coal Chemistry, Kemerovo.
Funding
State support was provided to the Institute of Coal Chemistry and Materials Science of the Federal Research Center of Coal and Coal Chemistry (project 121031500194-5).
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Translated by B. Gilbert
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Altshuler, H.N., Malyshenko, N.V., Lyrshchikov, S.Y. et al. Proton Transfer in Coal of Early Stage of Metamorphism and in SKN-2K Carbon Sorbent. Coke Chem. 64, 139–143 (2021). https://doi.org/10.3103/S1068364X21040037
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DOI: https://doi.org/10.3103/S1068364X21040037