Ring opening of decalin via hydrogenolysis on Ir/- and Pt/silica catalysts

Ring opening of decalin over bifunctional Ni–W carbide/Al2O3–USY catalysts and monofunctional acid Ni–W oxide/Al2O3–USY

“…The studies about monofunctional acid catalysts 3,6,8 showed that the ring contraction was the rst step on ring opening of decalin, and then followed by ring opening and cracking processes. And the monofunctional metallic catalysts 6,7,9,10 showed different catalytic mechanism with monofunctional acid catalysts and three different ring opening mechanisms were proposed, 11,12 including the multiplet mechanism, the dicarbene mechanism and the metallocyclobutane mechanism.…”

“…Recently, the bifunctional catalysts 1,7,8,10,[12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] has been used in the ring opening of naphthenes which showed good performance because of its more acid sites and higher hydrogenation on metal sites. The studies about bifunctional catalysts mainly focused on some noble metal catalyst, 1,[8][9][10]12,[14][15][16][18][19][20][21][24][25][26][28][29][30][31] which are easier sulfur poisoning. 7,32,33 It is reported that transition metal carbide catalysts have shown excellent hydrogenation activity for hydrodenitrogenation (HDN) and hydrodesulfurization (HDS) due to its higher hydrogenation on transition metal sites.…”

Influence of the Brønsted Acidity on the Ring Opening of Decalin for Pt-USY Catalysts

“…However, these compounds are poor representatives of the LCO composition. To account for this limitation, two-ring probe molecules, such as decalin and tetralin, have been employed [5,13,[16][17][18][19][20][21][22][23][24][25][26][27]. However, even by starting from a single molecule (or two stereoisomers in the case of decalin), a complex mixture of ca.…”

Ru‐Pt catalysts supported on Al2O3 and SiO2─Al2O3 for the selective ring opening of naphthenes

“…Monofunctional acid (mainly different kinds of zeolites), monofunctional metallic, and bifunctional catalysts have been proposed for performing the selective ring opening (SRO) …”