Catalytic composition, method for manufacturing thereof and method for the purification of terephthalic acid

摘要: The invention relates to catalytic compositions from metals of group VIII, used for purification terephthalic acid, methods preparing such and a process acid. allows creating stable selective catalysts in the composition comprises crystalline particles palladium or catalytically active at least one metal VIII periodic table, whereby said elements are deposited on surface carbonated matter. matter represents mesoporous graphite-like material, size pores thereof is comprised between 40 400 A, proportion total volume 0.5 degree similarity graphite 20 %. distributed across granules that maxima distribution components granule separated external by distance equal 1-30 % radius granules. inventive rhodium ruthenium else platinum, content may vary 0.1 3.0 wt.%, ratio other 10.0.