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Persson, H.; Yang, W.
Fuel, 09/2019, Letnik: 252Journal Article
•Demineralized biomass can increase the yield of BTX in catalytic pyrolysis.•Pyrolysis of demineralized biomass gives a higher organic liquid yield.•Secondary vapor reactions influences the performance of catalytic upgrading.•Bio-oil from demineralized biomass presents significantly lower total acid number. The effect of ash removal pre-treatment of lignocellulosic biomass prior to catalytic pyrolysis for producing biofuels was investigated. Non-catalytic and catalytic pyrolysis of demineralized and raw biomass was performed in Py-GC/MS and bench-scale experiments to study the performance of in-bed and ex-bed upgrading. Pre-treated biomass shows a significant increase in the organic liquid yield in experiments performed at 600 °C: from 31 to 42 wt% compared to raw biomass, as well as a significant reduction of char yield. The performance of in-bed catalytic pyrolysis of pre-treated biomass over HZSM-5 is limited compared to the corresponding raw material. However, ex-bed catalytic pyrolysis of pre-treated biomass at 600 °C results in an overall increased yield of BTX compounds. Pyrolysis vapors from pre-treated biomass present a suitable composition for catalytic upgrading after secondary vapor-phase reactions. Additionally, demineralization reduces the total acid number of derived liquids in catalytic and non-catalytic pyrolysis.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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