Microwave pyrolysis of cellulosic materials for the production of anhydrosugars

Miura, Masakatsu; Kaga, Harumi; Yoshida, Takashi; Ando, Koji

doi:10.1007/bf00767906

Cited by 62 publications

(16 citation statements)

References 18 publications

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“…Theoretically, microwaves could heat biomass materials at very high rates due to the volumetric heating and this process is likely to offer significant efficiencies over conventional resistively heated reactors. There have been few reports on microwave catalytic pyrolysis in the literature [50,51], however non-catalytic microwave pyrolysis of biomass materials such as cellulose [52][53][54] and lignin/wood [51,55,56] [57] report the microwave pyrolysis of corn stover and the bio-oils properties were determined. Stover was heated for 40 min at 600 W but no heating rate was recorded.…”

Section: Challenges With Catalytic Fast Pyrolysismentioning

confidence: 99%

Aromatic Production from Catalytic Fast Pyrolysis of Biomass-Derived Feedstocks

et al. 2009

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The conversion of biomass compounds to aromatics by thermal decomposition in the presence of catalysts was investigated using a pyroprobe analytical pyrolyzer. The first step in this process is the thermal decomposition of the biomass to smaller oxygenates that then enter the catalysts pores where they are converted to CO, CO 2 , water, coke and volatile aromatics. The desired reaction is the conversion of biomass into aromatics, CO 2 and water with the undesired products being coke and water. Both the reaction conditions and catalyst properties are critical in maximizing the desired product selectivity. High heating rates and high catalyst to feed ratio favor aromatic production over coke formation. Aromatics with carbon yields in excess of 30 molar carbon% were obtained from glucose, xylitol, cellobiose, and cellulose with ZSM-5 (Si/Al = 60) at the optimal reactor conditions. The aromatic yield for all the products was similar suggesting that all of these biomass-derived oxygenates go through a common intermediate. At lower catalyst to feed ratios volatile oxygenates are formed including furan type compounds, acetic acid and hydroxyacetaldehyde. The product selectivity is dependent on both the size of the catalyst pores and the nature of the active sites. Five catalysts were tested including ZSM-5, silicalite, beta, Y-zeolite and silica-alumina. ZSM-5 had the highest aromatic yields (30% carbon yield) and the least amount of coke.

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Section: Challenges With Catalytic Fast Pyrolysismentioning

confidence: 99%

Aromatic Production from Catalytic Fast Pyrolysis of Biomass-Derived Feedstocks

et al. 2009

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“…Due to the novelty of the microwave pyrolysis process, there are no other reports in the scientific literature, with details of equipment for the degradation of plastics. However, for the degradation of other materials, details of the apparatus utilized for the microwave pyrolysis of wood have been presented [50,51].…”

Section: Semi-batch Microwave Pyrolysis Equipmentmentioning

confidence: 99%

Microwave Pyrolysis of Plastic Wastes

Ludlow-Palafox

Chase

2006

Feedstock Recycling and Pyrolysis of Waste Plastics

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“…Therefore, it is widely used in many applications such as sample pretreatment (Roig, 1995), synthesis (de Andresa et al, 1999), digestion (Bettinelli et al, 2000), extraction (Perez Cid et al, 2001), and sludge stabilization (Chen et al, 2005;Hsieh et al, 2007). The technology of pyrolysis induced by microwave heating has been researched to treat various feedstocks such as oil shale (El harfi et al, 2000), oil-palm stone (Guo and Lua, 2000), paper (Miura et al, 2001), plastic waste (Ludlow-Palafox and Chase, 2001), sewage sludge (Menendez et al, 2002), rock phosphate (Bilali et al, 2005), scrap tire (Appleton et al, 2005), coffee hulls (Menendez et al, 2007), wood (Chen et al, 2008), rice straw (Huang et al, 2008), corn stalk bale (Zhao et al, 2010), oil palm biomass (Salema and Ani, 2011), and microalgae (Hu et al, 2012). These researches have shown that, by using the microwave pyrolysis, biomass feedstocks can be converted into various products such as bio-oil, bio-char, fuel gas, and hydrogen.…”

Section: Introductionmentioning

confidence: 99%