title: Optimizing carbon efficiency of jet fuel range alkanes from cellulose co-fed with polyethylene via catalytically combined processes.
abstract: Enhanced carbon yields of renewable alkanes for jet fuels were obtained through the catalytic microwave-induced co-pyrolysis and hydrogenation process. The well-promoted ZSM-5 catalyst had high selectivity toward C8-C16 aromatic hydrocarbons. The raw organics with improved carbon yield (∼44%) were more principally lumped in the jet fuel range at the catalytic temperature of 375°C with the LDPE to cellulose (representing waste plastics to lignocellulose) mass ratio of 0.75. It was also observed that the four species of raw organics from the catalytic microwave co-pyrolysis were almost completely converted into saturated hydrocarbons; the hydrogenation process was conducted in the n-heptane medium by using home-made Raney Ni catalyst under a low-severity condition. The overall carbon yield (with regards to co-reactants of cellulose and LDPE) of hydrogenated organics that mostly match jet fuels was sustainably enhanced to above 39%. Meanwhile, ∼90% selectivity toward jet fuel range alkanes was attained.
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
authors.forename: Xuesong
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA. Electronic address: hlei@wsu.edu.
authors.forename: Hanwu
authors.initials: H
authors.lastname: Lei
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhu
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
authors.forename: Xiaolu
authors.initials: X
authors.lastname: Zhu
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
authors.forename: Moriko
authors.initials: M
authors.lastname: Qian
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
authors.forename: Gayatri
authors.initials: G
authors.lastname: Yadavalli
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
authors.forename: Di
authors.initials: D
authors.lastname: Yan
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
authors.forename: Joan
authors.initials: J
authors.lastname: Wu
authors.affiliation: Department of Biological Systems Engineering, Washington State University, Richland, WA 99354-1671, USA.
authors.forename: Shulin
authors.initials: S
authors.lastname: Chen
mesh_terms: D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D006838:Hydrocarbons / Q000138:chemical synthesis*; D006865:Hydrogenation; D008872:Microwaves; D020959:Polyethylene / Q000737:chemistry*
chemical_list: D006838:Hydrocarbons; C009139:pyrolytic carbon; D002244:Carbon; C029662:JP5 jet fuel; D020959:Polyethylene; D002482:Cellulose
keywords: Bio-jet fuels; Cellulose; Co-feed catalytic microwave pyrolysis; Hydrogenation; Low-density polyethylene