Activated Carbon-Catalyzed Hydrogenation of Polycyclic Arenes

Abstract

Benzene and four polycyclic arenes (PAs) were used as substrates and their hydrogenation reactions were conducted over activated carbon (AC) at 300 °C to examine the relationship between their molecular structures and reactivities. The results show that the AC catalyzed the hydrogenation of the PAs selectively and that the reactivities of the arenes toward hydrogenation were dependent on the hydrogen-accepting abilities of the arenes and on the adsorption strengths of the arenes on the catalyst surface. The related mechanisms for hydrogen transfer were also discussed.

Designing supported ZnNi catalysts for the removal of oxygen from bio-liquids and aromatics from diesel

“…Unfortunately, when using alumina-supported catalysts, the presence of weak Lewis-type acidic sites on the support surface leads to accumulation of unwanted coke deposits. 7 In order to substitute the standard Al 2 O 3 support, the use of less acidic or neutral supports such as silica, K-modified alumina, mesoporous silicas (MS) or activated carbon for the HDO [8][9][10][11][12] and HDA [13][14][15] reactions has been studied. In particular, the SBA-15 substrate having hexagonal pores in a 2D array with long 1D channels (P6mm plane group) proved to be effective for supporting CoMo sulphide phases tested in bio-oil upgrading.…”

Application of supported metallic catalysts in catalytic hydrogenation of arenes

“…52,53 Activated carbon (AC) catalyzes monatomic hydrogen transfer, but such a hydrogen transfer did not lead to deep hydrogenation of polycyclic arenes. 98 Acidic supports improved the sulfur-resistance of metallic species and the catalytic activity for arene hydrogenation was modified as well, which was interpreted by the model of electron deficient 'metal-proton' adduct. 52,53,99 The mechanism for the interaction between Pt species and the zeolite was proposed.…”

A Metal-Free Carbon-Based Catalyst: An Overview and Directions for Future Research

“…Hydrogenation of aromatic compounds is an increasingly prominent class of hydrotreating reaction in coal, petroleum industries and organic transformations in organic chemistry [171]. For instance, Sun et al [172,173] reported an efficient method for arenes and polycyclic arenes hydrogenation at 300 • C using ACs. Interestingly, based on the catalytic hydrogenation and the molecular structures, the relationship between the reactivities of aromatic rings and the mechanism for hydrogen transfer was discussed.…”