Electron spin resonance (ESR) is a spectroscopic method to detect paramagnetic species,
which has been applied in coal and coal conversion research over 60 years. The major …

Coals (from lignite to anthracite) were extracted at room temperature with CS2-N-methyl-2-
pyrrolidinone (MP) mixed solvent (1: 1 by volume), which was found to be a very efficient …

The extracts and residues obtained by extraction of five bituminous coals with CS2-N-methyl-
2-pyrrolidinone mixed solvent (1: 1 by volume) were characterized at room temperature. The …

Solvent extraction of coals has been practiced extensively for various purposes including the
determination of coal structure. It is generally assumed that the extraction is mainly a …

To better explore coal macromolecular models from the extraction aspects, the behaviors of
free radicals during the solvent extraction of superfine pulverized coal were studied. The …

The eight Argonne Premium Coal Samples were extracted at room temperature with CS2-iV-
methyl-2-pyrrolidinone (NMP) mixedsolvent. Upper Freeport, Pittsburgh No. 8, Blind …

In this study, variations in the free radical concentration, degree of swelling (Q), and
extraction yield of Buertai coal (C%, 80.4%) in 11 solvents with different characteristics were …

Ionic liquids (ILs) are environmentally friendly solvents that have been used to extract
valuable compounds from coal and biomass. In this work, eight methylimidazolium-based …

Extraction and de-ashing of coals with N-methyl pyrrolidone (NMP) under mild conditions
has been reported recently. In this work, we have studied about a dozen American coals …

为探究溶剂特性对煤加氢液化中间产物反应行为的影响, 以新疆淖毛湖煤作为原料, 四氢萘,
循环溶剂及十氢萘作为供氢溶剂, 在高压搅拌釜中进行直接加氢液化实验, 并运用电子顺磁共振 …