Recent developments in lignocellulosic biomass catalytic fast pyrolysis: Strategies for the optimization of bio-oil quality and yield

Chen, Xu; Che, Qingfeng; Li, Shujuan; Liu, Zihao; Yang, Haiping; Chen, Yingquan; Wang, Xianhua; Shao, Jingai; Chen, Hanping

doi:10.1016/j.fuproc.2019.106180

Cited by 336 publications

(95 citation statements)

References 279 publications

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“…Biomass is a renewable energy resource that is recyclable, abundant, and inexpensive. Agroforestry residue, domestic waste, and farm animal waste are all potential sources of biomass energy . The primary methods used to produce such energy include physical heat generation, biological conversion (such as the fermentation for methane production), and chemical conversion (carbonization, liquefaction, and gasification of raw chemical materials) .…”

Section: Introductionmentioning

confidence: 99%

Influence of metal (Fe/Zn) modified ZSM‐5 catalysts on product characteristics based on the bench‐scale pyrolysis and Py‐GC/MS of biomass

et al. 2020

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In this study, sawdust was selected as the raw material for biomass pyrolysis to obtain organic products. The catalyst was modified with two elements (Fe and Zn). Through analysis of the catalytic products, we attempted to identify a pyrolysis catalyst that can improve the yield of aromatic hydrocarbon products.ZSM-5, modified with Fe and Zn, was investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and Brunauer-Emmett-Teller (BET) measurements. Tube furnace and flash pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS) were used to comprehensively investigate the characteristics of the products of biomass pyrolysis. The highest yield of phenols was obtained using the Femodified ZSM-5 catalyst, which was 18.30% higher than the yield obtained by the pure ZSM-5 catalyst. The lowest yield of acid products was obtained by single-metal-supported catalytic pyrolysis with Fe or Zn, which was 50.66% lower than the yield obtained by direct pyrolysis. During the pyrolysis of biomass using metal-modified catalysts, the production of aromatic hydrocarbons was greatly improved. Among them, compared with direct pyrolysis, the Fe-Zn co-modified ZSM-5 catalyst exhibited the weakest promotion of aromatic hydrocarbon formation, but there was still a 68.50% improvement. Although the co-modified catalyst did not show absolute advantages under the conditions used for this experiment, the improvements in the production of aromatics and phenolic products also showed its potential for improving bio-oil products. Under the action of Fe-modified catalysts, the most abundant components in the gas product were CO and CO 2 , which reached levels as high as 53.45% and 15.34%, respectively, showing strong deoxidation capabilities. Therefore, Fe-modified ZSM-5 catalysts were found to better promote the formation of aromatic hydrocarbon products of biomass pyrolysis. K E Y W O R D Scatalytic pyrolysis, modified ZSM-5, product characteristics: Py-GC/MS

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Section: Introductionmentioning

confidence: 99%

Influence of metal (Fe/Zn) modified ZSM‐5 catalysts on product characteristics based on the bench‐scale pyrolysis and Py‐GC/MS of biomass

et al. 2020

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“…Long-chain of glucose units of cellulose is known to be linked by β-(1-4) glycosidic bonding an all biomass types. But, end groups of the cellulose chain, degree of polymerization, and crystallinity depends on the structure of the biomass species [16]. The degree of polymerization of cellulose is highly depended on its source and cellulose is composed of crystalline and amorphous regions based on the degree of organization of its structure [17,18].…”

Section: A Characterization Of Cellulose Samplementioning

confidence: 99%

Master-eğriler kinetik yönteminin izotermal olmayan selüloz pirolizine uygulanması ve piroliz işleminin termodinamik analizi

Özsin

2020

Bilecik Şeyh Edebali Üniversitesi Fen Bilimleri Dergisi

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Piroliz gibi termokimyasal dönüşüm yöntemlerinin kinetiğinin modellenmesi biyorafineriler için en zorlu konulardan biridir. Temelde biyokütle pirolizinin, selüloz ile birlikte lignin ve hemiselüloz piroliz özelliklerinden etkilendiği bilinmektedir. Bu nedenle, bu çalışmada selülozun piroliz kinetiği ve termodinamiği incelenmiştir. Pirolize ait kinetik parametreler master eğriler ve Friedman yönteminin birleştirilmesi ile hesaplanmıştır. Selülozun aktif pirolizinin 263 ile 455 °C arasında gerçekleştiği saptanmıştır. Uygulanan Friedman yöntemi deneysel veriler ile çok iyi uyum sağladığı, termokimyasal dönüşüm işleminin aktivasyon enerjilerinin 150.8 ile 190.2 kJ/mol arasında değiştiği ve pirolizin ortalama aktivasyon enerjisinin 164.3 kJ/mol olduğu bulunmuştur. Katı hal bozunma süreçlerinde kullanılan kinetik yöntemlerin karşılaştırılması ile selüloz piroliz mekanizmasının düşük dönüşümlerde (0<α<0.5) difüzyon kontrollü bir bozunma işlemi (D3) ile sürdüğü ve daha yüksek dönüşümlerde ise tepkime derecesine bağlı olduğu saptanmıştır.

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“…It consists of three main compounds -cellulose, hemicellulose and lignin -accompanied by lower amounts of proteins, waxes, resins and ash, among others [3]. One of the methods of lignocellulosic feedstock conversion is high temperature treatment in an inert gas atmosphere, called pyrolysis [4][5][6][7][8]. This is a complex process consisting of a large number of consecutive reactions [9,10].…”

Section: Introductionmentioning

confidence: 99%

Chromatographic analysis of bio-oil formed in fast pyrolysis of lignocellulosic biomass

Grams

2020

Reviews in Analytical Chemistry

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Fast pyrolysis of lignocellulosic biomass is one of the most promising methods of the production of renewable fuels. However, an optimization of the conditions of bio-oil production is not possible without comprehensive analysis of the composition of formed products. There are several methods for the determination of distribution of products formed during thermal decomposition of biomass with chromatography being the most versatile among them. Although, due to the complex structure of bio-oil (presence of hundreds chemical compounds with different chemical character), an interpretation of the obtained chromatograms is not an easy task. Therefore, the aim of this work is to present an application of different chromatographic methods to the analysis of the composition of the mixture of products formed in high temperature decomposition of lignocellulosic feedstock. It includes pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), two dimensional gas (GC x GC) or liquid chromatography (LC x LC) and initial fractionation of bio-oil components. Moreover, the problems connected with the analysis of bio-oils formed with the use of various fast pyrolysis reactors and capabilities of multivariate analysis are discussed.

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Recent developments in lignocellulosic biomass catalytic fast pyrolysis: Strategies for the optimization of bio-oil quality and yield

Cited by 336 publications

References 279 publications

Influence of metal (Fe/Zn) modified ZSM‐5 catalysts on product characteristics based on the bench‐scale pyrolysis and Py‐GC/MS of biomass

Influence of metal (Fe/Zn) modified ZSM‐5 catalysts on product characteristics based on the bench‐scale pyrolysis and Py‐GC/MS of biomass

Master-eğriler kinetik yönteminin izotermal olmayan selüloz pirolizine uygulanması ve piroliz işleminin termodinamik analizi

Chromatographic analysis of bio-oil formed in fast pyrolysis of lignocellulosic biomass

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