Degradation of polypropylene to aromatic hydrocarbons over Pt- and Fe-containing activated carbon catalysts

Liquefaction of Municipal Waste Plastics over Acidic and Nonacidic Catalysts

“…This is because it is a neutral catalyst with a high surface area and, therefore, it might be more resistant to impurities and coke formation. It has been reported that Pt-, Fe-and Mo-supported activated carbon catalysts were effective for the pyrolysis of PE and PP [11,14,15]. Use of metal-supported activated carbon catalysts has enhanced the formation of aromatics via dehydrocyclization of straight-or branched-chain radicalic intermediates.…”

“…The most commonly used catalysts in these studies were solid acids (amorphous silica-alumina, zeolites, zeolite-based FCC catalysts, MCM mesoporous materials and super acidic zirconia, etc.). Besides acidic catalysts, a few studies have been performed with activated carbon and nonacidic mesoporous silica catalyst (FSM) [11][12][13][14][15]. Acidic cracking catalysts are very useful for direct liquefaction of PE and PP.…”

Performance of Acidic McM-Like Aluminosilicate Catalysts in Pyrolysis of Polypropylene

“…) (Lin and Yen, 2005;Lee et al, 2002;Hwang et al, 2002;de la Punte and Sedran, 1998), amorphous SiO 2 -Al 2 O 3 (Aguado et al, 1997), and activated carbon (Uemichi et al, 1989). Because of the bulky nature of the plastic molecules, the degradation reaction is strongly controlled by the pore size of the catalysts.…”

Catalytic Feedstock Recycling of Polymers

“…The produced oils have limited uses and applications only in industrial boilers, burners and power generators. And the fuel gas generated by plastic recycling is two or three times more expensive than fuel oil [16].…”