We have recently presented a new to estimate the strength distribution of hydrogen bonds (HBD) in coal.. The method analyzes the FTIR spectrum ranging from 2400 to 3700cm^<-1> that are obtained using an in-situ diffuse reflectance IR Fourier transform (DRIFT) technique with neat, undiluted coal samples. In this work the method was applied to estimate the hydrogen bond strength distributions formed between coal and several polar solvents: acetone, ethyl acetate, THF, DMF, and pyridine.
