With 430 C semi-batch
experiments [13], a KFS-16B catalyst gave lighter condensate products
and a slower deactivation in comparison to other catalysts.
The ZSM-5 catalyst promoted gas production significantly in the
C4–C5 range, and gave light liquid hydrocarbons. Silica–Alumina
SA-1 and SA-2 promoted liquid production with a narrow range of carbon number. A 38–57% conversion was achieved when Mordenite
catalysts were used at 420 C to pyrolyse low-density polyethylene
(LDPE) [14]. When a Rh/Al2O4 catalyst was used at
425 C, a high liquid yield of 85% was reached in a pressurized
autoclave [15] with an increased yield of alkanes at the expense
of alkenes in the gas fraction. Methane gas was at a dominating
fraction of 46%.