Identification and Determination of Low-Boiling Phenols in Low Temperature Coal Tar

Abstract

Low boiling phenols in a low temperature bituminous coal tar distillate have been identified and determined quan-

Selective hydrodeoxygenation of p-cresol as a model for coal tar distillate on Ni–M/SiO2 (M = Ce, Co, Sn, Fe) bimetallic catalysts

“…The production of fuels such as gasoline and diesel by the hydrogenation of coal tar has been frequently reported and has been industrialized. [1][2][3] In low-temperature coal tar, more than 90% of the distillate below 230 C consists of phenolic compounds, 4,5 mainly monocyclic phenols, which account for more than 60% of the total phenols. 6 In the process of hydrotreating, these compounds oen lead to the formation of large amounts of naphthenes and water; thus, it is not only difficult to obtain high-octane fuel, but the catalyst life is adversely affected.…”

Separation and Molecular Characterization of Ketones in a Low-Temperature Coal Tar

“…Meanwhile, LTCT could also be used to produce chemicals, for example, to separate phenols. The composition of LTCT is extremely complex: it consists of thousands of hydrocarbons and heteroatom compounds, including aliphatic − and aromatic , hydrocarbons, phenols, − nitrogen compounds, − etc. Oxygen-containing compounds, such as phenolic compounds, are much more abundant in LTCT than petroleum and high-temperature coal tars.…”

Efficient separation of phenol from oil by acid–base complexing adsorption

“…Because of the large quantities of organic chemicals exsisted in the coal tar oil [1], the conventional hydrotreating process obviously underestimates and, to some extent, wastes its value. Among these chemicals, phenolic compounds, which are important materials for organic chemical industry, have relatively high concentration and show considerable economic value [1,6,7]. Thereby, the separation of phenolic compound becomes increasingly important for the deep processing of coal tar oil.…”