A method for improving the properties of a solid, naturally occurring, carbon-bearing material

摘要

ABSTRACT OF THE DISCLOSURETreatment of weakly acidic protons in solid, naturally-occurringcarbonaceous material, such as coal, by selective oxygen-alkylation and/oroxygen-acylation by employing a phase transfer reagent and an oxygen-alkylatingand/or acylating agent.