title: The effect of clay catalyst on the chemical composition of bio-oil obtained by co-pyrolysis of cellulose and polyethylene.
abstract: Cellulose/polyethylene (CPE) mixture 3:1, w/w with and without three clay catalysts (K10 - montmorillonite K10, KSF - montmorillonite KSF, B - Bentonite) addition were subjected to pyrolysis at temperatures 400, 450 and 500°C with heating rate of 100°C/s to produce bio-oil with high yield. The pyrolytic oil yield was in the range of 41.3-79.5 wt% depending on the temperature, the type and the amount of catalyst. The non-catalytic fast pyrolysis at 500°C gives the highest yield of bio-oil (79.5 wt%). The higher temperature of catalytic pyrolysis of cellulose/polyethylene mixture the higher yield of bio-oil is. Contrarily, increasing amount of montmorillonite results in significant, almost linear decrease in bio-oil yield followed by a significant increase of gas yield. The addition of clay catalysts to CPE mixture has a various influence on the distribution of bio-oil components. The addition of montmorillonite K10 to cellulose/polyethylene mixture promotes the deepest conversion of polyethylene and cellulose. Additionally, more saturated than unsaturated hydrocarbons are present in resultant bio-oils. The proportion of liquid hydrocarbons is the highest when a montmorillonite K10 is acting as a catalyst.
authors.affiliation: Faculty of Chemistry, Wrocław University of Technology, Gdańska 7/9, 50-344 Wrocław, Poland.
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Solak
authors.affiliation: Faculty of Chemistry, Wrocław University of Technology, Gdańska 7/9, 50-344 Wrocław, Poland. Electronic address: piotr.rutkowski@pwr.wroc.pl.
authors.forename: Piotr
authors.initials: P
authors.lastname: Rutkowski
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D056804:Biofuels / Q000032:analysis*; D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D000077215:Clay; D008401:Gas Chromatography-Mass Spectrometry; D006358:Hot Temperature; D020959:Polyethylene / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D014866:Waste Products / Q000032:analysis*
chemical_list: D000538:Aluminum Silicates; D056804:Biofuels; D014866:Waste Products; D020959:Polyethylene; D002482:Cellulose; D000077215:Clay
keywords: Catalytic pyrolysis; Cellulose/polyethylene mixture; GC–MS; Lewis acid; Liquid hydrocarbons