The effect of feedstock composition and taxonomy on the products distribution from pyrolysis of nine herbaceous plants

Hlavsová, Adéla; Corsaro, Agnieszka; Raclavská, Helena; Vallová, Silvie; Juchelková, Dagmar

doi:10.1016/j.fuproc.2015.11.022

Cited by 21 publications

(12 citation statements)

References 39 publications

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“…phenol, 4‐vinyl phenol, 2‐methoxy‐4‐vinyl phenol and 2,6‐dimethoxy phenol) as the major products in the lignin‐derived bio‐oil . Extensive studies have shown that the pyrolysis of lignocellulosic biomass generates highly diverse products, depending on the biomass feedstocks, residence time and reaction temperature …”

Section: Introductionmentioning

confidence: 99%

“…15 Extensive studies have shown that the pyrolysis of lignocellulosic biomass generates highly diverse products, depending on the biomass feedstocks, residence time and reaction temperature. 10,12,16 In contrast to pyrolysis of biomass, catalytic fast pyrolysis (CFP) of biomass has been proven as an effective method for production of aromatic chemicals. 17,18 Generally, CFP of biomass involves two cascade processes: pyrolysis of biomass and subsequent upgrading of biomass pyrolysis vapor.…”

Section: Introductionmentioning

confidence: 99%

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Production of bio‐based p‐xylene via catalytic pyrolysis of biomass over metal oxide‐modified HZSM‐5 zeolites

Chang

Zhu

Jin

et al. 2018

J of Chemical Tech & Biotech

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BACKGROUND p‐Xylene is an important bulk chemical in the petrochemical industry, and the production of bio‐based p‐xylene is of great significance in both academic and industrial arenas. However, the biggest challenge for the production of p‐xylene from biomass is how to increase the yield and selectivity of p‐xylene. RESULTS The highest p‐xylene yield of 20.7 C‐mol% with a p‐xylene/xylenes ratio of 91.6% was obtained by the co‐catalytic pyrolysis of sawdust with 50 wt% methanol over the 20%La2O3/HZSM‐5(80) catalyst. Adding a La, Mg, Ce or Zn element into HZSM‐5 promoted the alkylation of benzene and toluene to form xylenes, and the isomerization of m/o‐xylenes to p‐xylene. CONCLUSION This work developed a one‐pot process in which lignocellulosic biomass (sawdust) was directionally converted into p‐xylene by coupling the catalytic pyrolysis of biomass into aromatic monomers, the alkylation of light aromatics to xylenes and the isomerization of m/o‐xylenes to p‐xylene over the metal oxide‐modified HZSM‐5 catalysts. The selectivity and yield of p‐xylene strongly depended on the acidity of the catalysts, reaction temperature and methanol additive during the catalytic pyrolysis of sawdust. © 2018 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Production of bio‐based p‐xylene via catalytic pyrolysis of biomass over metal oxide‐modified HZSM‐5 zeolites

Chang

Zhu

Jin

et al. 2018

J of Chemical Tech & Biotech

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“…Previous studies reported four stages during the pyrolysis; water desorption followed by three decomposition stages for cellulose, hemicellulose and lignin. The product distribution depends upon the feedstock chemical and biochemical composition, the biomass taxonomy and the secondary interaction between liquid and char [158]. In general, the highest yield of liquid ( mostly anhydrosugars) is produced by the decomposition of cellulose along with the lowest char yield.…”

Section: Herbaceous Biomass (A) Pyrolysis and Bio-oil Productionmentioning

confidence: 99%

“…In general, the highest yield of liquid ( mostly anhydrosugars) is produced by the decomposition of cellulose along with the lowest char yield. While hemicellulose decomposes to the highest yield of gas and liquid ( mainly water, ketones and phenols), lignin produces the phenols in the liquid form along with the highest yield in char [158]. Woody biomass decomposes slower than that of the herbaceous biomass with less evolution of volatile matters due to the larger contents of cellulose and hemicellulose within the herbaceous biomass [158].…”

Section: Herbaceous Biomass (A) Pyrolysis and Bio-oil Productionmentioning

confidence: 99%

Reusing, recycling and up-cycling of biomass: A review of practical and kinetic modelling approaches

Osman

Abdelkader

Farrell

et al. 2019

Fuel Processing Technology

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There is a growing interest in the utilisation of biomass for a range of applications. Coupled with 22 this is the appeal of improving the circular economy and as such, there is a focus on reusing, 23 recycling and upcycling of many materials, including biomass. This has been driven by society 24 in terms of demand for more sustainable energy and products, but also by a paradigm shift in 25 attitudes of the population to reduce their personal carbon footprint. Herein we have selected a 26 number of types of biomass (woody, herbaceous, etc.) and surveyed the ways in which they are 27 utilised. We have done this in combination with assessing some kinetic modelling approaches 28 which been reported for the evaluation of different processes for the recycling, reuse and 29 upcycling of biomass. 30

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“…Nevertheless, these differences cannot be explained by the difference in peak temperatures and heating rates during pyrolysis as we showed that the operating conditions were almost the same for the three biomasses. The explanation may lie in the difference in the ash content and its composition [28]. Indeed, biomass particles shrink during pyrolysis and the ash tends to concentrate on the external surface thereby creating a thin layer of ash surrounding the particle.…”

Section: Yields and Composition Of The Char Condensates And Permanent Gasesmentioning

confidence: 99%

Oxidative pyrolysis of pine wood, wheat straw and miscanthus pellets in a fixed bed

Pham

Piriou

Salvador

et al. 2018

Fuel Processing Technology

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Oxidative pyrolysis is a key step in the autothermal operation of many fixed-bed reactors for staged gasification and advanced carbonisation. In these reactors, biomass is converted into charcoal, condensates and permanent gases inside a moving Oxidation Zone (OZ) which also produces energy to self-sustain the process. Oxidative pyrolysis of three different biomass types: pine wood, miscanthus and wheat straw pellets, was performed in a batch 20 cm diameter fixed bed reactor. Results showed that the OZ consumed 11% to 14% of the stoichiometric air to self-sustain the process and reached a peak temperature around 720°C whatever the biomass. The propagation velocity and thickness of the OZ were inversely proportional to the ash content and to the bulk density of the biomass. Ash was also shown to influence the yield and composition of the resulting products due to a catalytic effect on primary and secondary pyrolysis reactions.

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The effect of feedstock composition and taxonomy on the products distribution from pyrolysis of nine herbaceous plants

Cited by 21 publications

References 39 publications

Production of bio‐based p‐xylene via catalytic pyrolysis of biomass over metal oxide‐modified HZSM‐5 zeolites

Production of bio‐based p‐xylene via catalytic pyrolysis of biomass over metal oxide‐modified HZSM‐5 zeolites

Reusing, recycling and up-cycling of biomass: A review of practical and kinetic modelling approaches

Oxidative pyrolysis of pine wood, wheat straw and miscanthus pellets in a fixed bed

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