Characteristics and kinetics analyses of different genus biomass pyrolysis

Yao, Can; Tian, Hong; Hu, Zhangmao; Yin, Yanshan; Chen, Donglin; Yan, Xiaozhong

doi:10.1007/s11814-017-0298-4

Cited by 27 publications

(6 citation statements)

References 19 publications

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“…Although both TPs underwent weight loss in three reaction stages, which were attributed to the decomposition of kraft paper (first stage), PE (second stage), and other additives such as CaCO 3 (third stage), the weight loss of TP-1 and TP-2 at each stage (between 210 and 390 • C) on the TG curves were different as a result of their different composition ratio of kraft paper and PE. Kraft paper mainly consists of cellulose, which decomposes between 200 • C and 400 • C [35,36]. PE rapidly decomposes between 400 • C and 520 • C, i.e., at a higher temperature than cellulose [37,38].…”

Section: Tg Analysismentioning

confidence: 99%

Catalytic Pyrolysis of Tetra Pak over Acidic Catalysts

et al. 2020

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The thermal and catalytic pyrolysis of two kinds of Tetra Pak waste (TP-1 and TP-2) over three different acidic catalysts—HZSM-5(SiO2/Al2O3, 30), HBeta (38), and Al-MCM-41(20)—were investigated in this study. Tetra Pak (TP) wastes consist of composite material comprising kraft paper, polyethylene (PE) film, and aluminum foil. Thermal decomposition behaviors during the pyrolysis of TPs were monitored using a thermogravimetric (TG) analyzer and tandem micro reactor-gas chromatography/mass spectrometry (TMR-GC/MS). Neither the interaction between the non-catalytic pyrolysis intermediates of kraft paper and PE, nor the effect of aluminum foil have been monitored during the non-catalytic TG analysis of TPs. The maximum decomposition temperatures of PE in TP-1 shifted from 465 °C to 432 °C by HBeta(38), 439 °C by HZSM-5(30), and 449 °C by Al-MCM-41(20), respectively. The results of the TMR-GC/MS analysis indicate that the non-catalytic pyrolysis of TPs results in the formation of large amounts of furans and heavy hydrocarbons and they are converted efficiently to aromatic hydrocarbons over the acidic catalysts. Among the three catalysts, HZSM-5(30) produced the largest amount of aromatic hydrocarbons, followed by HBeta(38) and Al-MCM-41(20) owing to their different acidity and pore size. Compared to TP-1, TP-2 produced a larger amount of aromatic hydrocarbons via catalytic pyrolysis because of its relatively larger PE content. The synergistic formation of aromatic hydrocarbons was also enhanced during the catalytic pyrolysis of TPs due to the effective role of PE as hydrogen donor to kraft paper. In terms of their catalytic effectiveness, HZSM-5(30) had a longer lifetime than HBeta(38).

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Section: Tg Analysismentioning

confidence: 99%

Catalytic Pyrolysis of Tetra Pak over Acidic Catalysts

et al. 2020

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“…Figure 1 shows the thermal and catalytic TG and DTG curves of pinecone over HY catalysts. The non-catalytic TG curve of pinecone suggests that it decomposed rapidly at between 200 and 400 • C because of the main decomposition of the lignocellulosic components of biomass (lignin, hemicellulose, and cellulose) [17] and that this continued up to a higher temperature than 600 • C due to char stabilization [18,19]. The catalytic TG and DTG curves of pinecone also revealed the same decomposition temperature region as those obtained from the non-catalytic TGA.…”

Section: Introductionmentioning

confidence: 53%

In-Situ Catalytic Fast Pyrolysis of Pinecone over HY Catalysts

et al. 2019

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The in-situ catalytic fast pyrolysis of pinecone over HY catalysts, HY(30; SiO2/Al2O3), HY(60), and 1% Ni/HY(30), was studied by TGA and Py-GC/MS. Thermal and catalytic TGA indicated that the main decomposition temperature region of pinecone, from 200 to 400 °C, was not changed using HY catalysts. On the other hand, the DTG peak heights were differentiated by the additional use of HY catalysts. Py-GC/MS analysis showed that the efficient conversion of phenols and other oxygenates formed from the pyrolysis of pinecone to aromatic hydrocarbons could be achieved using HY catalysts. Of the HY catalysts assessed, HY(30), showed higher efficiency in the production of aromatic hydrocarbons than HY(60) because of its higher acidity. The aromatic hydrocarbon production was increased further by increasing the pyrolysis temperature from 500 to 600 °C and increasing the amount of catalyst due to the enhanced cracking ability and overall acidity. The use of 1% Ni/HY(30) also increased the amount of monoaromatic hydrocarbons compared to the use of HY(30) due to the additional role of Ni in enhancing the deoxygenation and aromatization of reaction intermediates.

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“…Moreover, the mineral Si in Miscanthus can lead to the low temperature melting behavior of Miscanthus. 12 Yao et al 13 studied the pyrolysis process of Miscanthus, corn stalk, rice husk, and pine by thermogravimetry. The results showed that corn stalk and Miscanthus were susceptible to pyrolysis because the activation energy of Miscanthus, corn stalk, rice husk, and pine were 46.7, 29.3, 54.3, and 58.1 kJ/mol, respectively.…”

Section: Introductionmentioning

confidence: 99%

Effects of pyrolysis parameters on the distribution of pyrolysis products of Miscanthus

Zhou

Tian

et al. 2021

Progress in Reaction Kinetics and Mechanism

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This work presents a comprehensive study on the effects of pyrolysis parameters (pyrolysis temperature, residence time, and heating rate) on the distribution of pyrolysis products of Miscanthus. Py-GC/MS (Pyrolysis-gas chromatography/mass) was conducted to identify building blocks of value-added chemical from Miscanthus. The results showed that the main pyrolysis products of Miscanthus were ketone, aldehyde, phenol, heterocycles, and aromatic compounds. The representative compounds of ketone and aldehyde compounds produced at different pyrolysis temperatures changed obviously, while the representative compounds of phenolic, heterocyclic, and aromatic compounds had no obvious change. Large-scale pyrolysis of Miscanthus had begun at 400°C, and the relative content of pyrolysis products from Miscanthus reached the maximum of 98.34% at 700°C. The relative peak area ratio of phenol and aromatic compounds reached the maximum and minimum at the residence time of 5 and 10 s, while the relative peak area ratio of ketone compounds showed the opposite trend. The relative peak area ratio of aldehyde compounds was higher under shorter or longer residence time. For heterocyclic compounds, the relative peak area ratio reached the maximum of 27.0% at residence time of 10 s. The faster or slower heating rate was beneficial to the production of aldehyde and phenol compounds. The relative peak area ratio of ketone compounds reached the maximum at 10,000°C/s, 70°C/s, and 10°C/s, and the relative peak area ratio tendency of heterocyclic compounds was similar to ketone. For aromatic compounds, the overall fluctuations were large, and the relative peak area ratio was the highest at the heating rate of 100°C/s.

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Characteristics and kinetics analyses of different genus biomass pyrolysis

Cited by 27 publications

References 19 publications

Catalytic Pyrolysis of Tetra Pak over Acidic Catalysts

Catalytic Pyrolysis of Tetra Pak over Acidic Catalysts

In-Situ Catalytic Fast Pyrolysis of Pinecone over HY Catalysts

Effects of pyrolysis parameters on the distribution of pyrolysis products of Miscanthus

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