Comparison of metals and metal-oxides from the viewpoint of their catalytic effect in some reactions of hydrocarbons

Investigation of the aromatization of C6+ hydrocarbons on chromia/lanthana-zirconia catalyst

“…Monofunctional mechanisms can be divided into the so called "triene mechanism" and the mechanism of the "early ring closure". The triene mechanism includes a stepwise dehydrogenation resulting in a conjugated triene, followed by ring closure [10][11][12][13][14][15][16][17][18][19][20]. Another possibility would be a ring closure already in an early stage of the reaction, then followed by a dehydrogenation to the aromatic product [21][22][23][24][25][26][27].…”