A bubbling fluidized bed reactor 102mmID has been used as pyrolyser by feeding polyethylene-terephtalate at two different reactor temperatures. Experiments were carried out with the aim to quantify the yield and composition of gas, liquids and to characterize the solid phase. The solid phase has been characterized by means of different methods: TG-DTG allowed to obtain a preliminary indication about the nature of the different compounds present in the solid sample by means of determination of the thermal stability of their structures; SEM and TEM microscopy, coupled with EDAX analysis, allowed to investigate the morphology of solid structures and to recognize the presence of some specific elements. Different nanostructures, having different degradation temperatures, have been obtained at 600°C and at 800°C. Moreover, the effect of metals extracted by reactor walls on MWCNTs production and the activation/deactivation of this "in-situ" catalyst during pyrolysis of PET is described and supported by experimental evidences.

MWCNTs production by means of pyrolysis of polyethylene-terephtalate in a bubbling fluidized bed

MASTELLONE, Maria Laura;ARENA, Umberto
2008

Abstract

A bubbling fluidized bed reactor 102mmID has been used as pyrolyser by feeding polyethylene-terephtalate at two different reactor temperatures. Experiments were carried out with the aim to quantify the yield and composition of gas, liquids and to characterize the solid phase. The solid phase has been characterized by means of different methods: TG-DTG allowed to obtain a preliminary indication about the nature of the different compounds present in the solid sample by means of determination of the thermal stability of their structures; SEM and TEM microscopy, coupled with EDAX analysis, allowed to investigate the morphology of solid structures and to recognize the presence of some specific elements. Different nanostructures, having different degradation temperatures, have been obtained at 600°C and at 800°C. Moreover, the effect of metals extracted by reactor walls on MWCNTs production and the activation/deactivation of this "in-situ" catalyst during pyrolysis of PET is described and supported by experimental evidences.
2008
Mastellone, Maria Laura; Arena, Umberto
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11591/226045
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