Hydrogen-transfer ability of extrographic fractions of coal-tar pitch

Pyrolysis behavior and bonding information of coal — A TGA study

“…The most common way is to develop overall mass-change expressions for the solid and therefore for the volatiles without the knowledge on chemical changes in the solid and distribution of the volatiles especially the tar [1][2][3][4]. Another common way is to correlate pyrolysis conditions with the formation of particular products, such as methane, hydrogen, solvent soluble fractions or sulfur compounds [5][6][7][8][9]. It was also demonstrated that the mass-change curve of volatiles during pyrolysis can be decoupled into or fitted by a set of sub-curves, each representing a simple first-order and irreversible reaction and activation energies of all these reactions distribute following a certain pattern, such as the distributed activation energy model (DAEM) [10][11][12][13][14][15][16].…”

Efficient preparation of mesocarbon microbeads by pyrolysis of coal-tar pitch in the presence of rosin

“…However, a content of irregular-shaped mesophase can also be observed in Fig. 3d be that excessive rosin provides low viscosity environment favoring the coalescence of MCMB upon the pyrolysis [26,27]. The results show that the rosin addition contributes to a notable increase of MCMB yield.…”

Thermal behavior of coal-tar pitch modified with BMI resin

“…In this paper, the BMI resin seems to be mostly responsible for the improvement of optical textures of semi-cokes. In any case, conditions appropriate to obtain high yields of anisotropic material are the result of a balance between reactivity and mobility [26,27]. The BMI resin has a large amount of hydroxy and methylene groups [20], which could be a source of transferable hydrogen reducing polymerization velocity and thus providing feasible viscosity environment for mesogenic molecules to form preferable optical texture [28].…”