Production of Chemicals from Selective Fast Pyrolysis of Biomass

Zhu, Xun; Lü, Qiang

doi:10.5772/9773

Cited by 15 publications

(8 citation statements)

References 88 publications

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“…303 Therefore, the commercialization of bio-oils for value-added chemicals requires the production of specific bio-oils with high contents of target products. [6,7] As previously reported, the use of catalysts in pyrolysis processes changes the composition of the bio-oils. [8][9][10][11][12][13] It is pertinent that a suitable catalyst is selected for catalytic pyrolysis.…”

Section: Introductionmentioning

confidence: 76%

Catalytic Pyrolysis of Pine Wood Sawdust to Produce Bio-oil: Effect of Temperature and Catalyst Additives

Özbay

2015

Journal of Wood Chemistry and Technology

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In this work, non-catalytic pyrolysis of Turkish pine (Pinus brutia Ten.) wood sawdust was performed in a fixed-bed reactor at various temperatures to obtain the optimum conditions to achieve a maximum bio-oil yield. The highest yield of bio-oil was obtained about 46 wt% at 550 • C for non-catalytic pyrolysis. At the optimum conditions, the effects of different catalyst types (KOH, ZnCl 2 , and ZnO) and amount of catalyst (5, 10, 15, and 20 wt%) on the pyrolysis product yields and bio-oil properties were investigated. The presence of catalysts changed the product distribution considerably. Increasing the amount of catalyst led to a decrease in the yield of liquid product, while the gas and char yields increased compared to non-catalytic pyrolysis. The chemical compositions of bio-oil were determined with GC-MS analyses. It was determined that bio-oils contain a large variety of organic compounds, such as furans, aldehydes, ketones, phenols, acids, benzenes, alcohols, alkanes, and polycyclic aromatic hydrocarbons (PAHs). The catalysis by KOH significantly increased the levels of phenols, while it reduced the formation of acids and aldehydes. ZnCl 2 produced bio-oil with high percentages of aldehydes. Moreover, ZnO reduced the proportion of PAH in the bio-oil. These results demonstrated that bio-oils could improve with a catalyst. Therefore, catalyst selection for high bio-oil quality is crucial in industrial applications.

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Section: Introductionmentioning

confidence: 76%

Catalytic Pyrolysis of Pine Wood Sawdust to Produce Bio-oil: Effect of Temperature and Catalyst Additives

Özbay

2015

Journal of Wood Chemistry and Technology

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“…The details of possible routes for the pyrolytic formation of the main products from cellulose and xylan have been discussed in the literature (Shen and Gu, 2009;Shen et al, 2010). In general, lignin pyrolysis was produced with higher char yield and lower liquid yield than holocellulose, where the liquid product contained mainly larger molecular oligomers known as pyrolytic lignins, phenol based-compounds, and lighter compounds (methanol, HAA, acetic acid) (Zhu and Lu, 2013). Fig.…”

Section: Bio-oilmentioning

confidence: 99%

Pyrolysis polygeneration of pine nut shell: Quality of pyrolysis products and study on the preparation of activated carbon from biochar

Chen

Chen²,

Sun

et al. 2016

Bioresource Technology

141

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“…However, a corrective remark must be inserted here since the expressions pyrolysis liquids and wood distillates by themselves are too comprehensive to be used as synonyms of PA. In turn, pyroligneous tar, pyrolysis oil, bio-oil, bio-fuel and bio-crude oil are commonly used to refer to the heavier oily and combustible portion of liquid products from flash pyrolysis of lignocellulosic raw materials, as pointed out by several authors [ 5 , 6 , 7 ] among many others. From a similar standpoint, the term liquid smoke also cannot be used as a synonym for PA since the so-called commercial liquid smoke is a result of fractionation, purification or concentration of carbonization liquid products, giving aqueous, oily or dry powder products [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

Chemical Composition of Pyroligneous Acid Obtained from Eucalyptus GG100 Clone

et al. 2018

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The present study aimed to characterize the chemical composition of pyroligneous acid (PA) obtained from slow pyrolysis of the clone GG100 of Eucalyptus urophylla × Eucalyptus grandis. The efficiency of extraction of organic compounds by using different solvents—dichloromethane (DCM), diethyl ether (DE) and ethyl acetate (EA)—was evaluated. Wood discs were collected and carbonized at a heating rate of 1.25 °C/min until 450 °C. Pyrolysis gases were trapped and condensed, yielding a crude liquid product (CLP), which was refined to obtain pure PA. Then liquid–liquid extraction was carried out. Each extracted fraction was analyzed by GC-MS and the chemical compounds were identified. Experimental results showed that a larger number of chemical compounds could be extracted by using DCM and EA in comparison to diethyl ether DE. A total number of 93 compounds were identified, with phenolic compounds being the major group, followed by aldehydes and ketones, furans, pyrans and esters. Higher contents of guaiacol, phenol, cresols and furfural seem to explain the antibacterial and antifungal activity shown by PA, as reported previously in the literature. Experimental data indicated that the organic phase extracted from GG100 PA consists of a mixture of compounds similar to liquid smokes regularly used in the food industry.

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Production of Chemicals from Selective Fast Pyrolysis of Biomass

Cited by 15 publications

References 88 publications

Catalytic Pyrolysis of Pine Wood Sawdust to Produce Bio-oil: Effect of Temperature and Catalyst Additives

Catalytic Pyrolysis of Pine Wood Sawdust to Produce Bio-oil: Effect of Temperature and Catalyst Additives

Pyrolysis polygeneration of pine nut shell: Quality of pyrolysis products and study on the preparation of activated carbon from biochar

Chemical Composition of Pyroligneous Acid Obtained from Eucalyptus GG100 Clone

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