Synthesis and selective hydrogenation of dibenzylbenzenes and ?,??-bis(benzylphenyl)xylenes

Hydrogenation of the liquid organic hydrogen carrier compound dibenzyltoluene – reaction pathway determination by 1H NMR spectroscopy

“…The use of a nickel catalyst showed a definite preference for outer-ring reduction. The known analytic methods for polyaromatic systems are HPLC, 18,19 GC analysis 17,20,21 or detection via ultraviolet spectroscopy 22 involving a separation step of the various species. In the present paper we elaborate the hydrogenation and dehydrogenation sequences for the H0-DBT/ H18-DBT system by using 1 H NMR spectroscopy [23][24][25] in combination with HPLC and GC-MS analyses as well as suitable kinetic models.…”

Ultraviolet spectrometry

“…Clark and Williams (130) used the intensity of the Ph-0 7r-t* transition to determine the angle between the plane of the benzene ring and the plane containing the oxygen bonds in several aromatic ethers. Chel'tsova and co workers (119) confirmed the structures of hydrogenated dibenzylbenzenes and , '-bis-(benzylphenyl)xylenes.…”