Effect of Torrefaction Temperature on Product Distribution from Two-Staged Pyrolysis of Biomass

2012 ◽  
Vol 26 (5) ◽  
pp. 2968-2974 ◽  
Author(s):  
Anqing Zheng ◽  
Zengli Zhao ◽  
Sheng Chang ◽  
Zhen Huang ◽  
Fang He ◽  
...  
Keyword(s):  
Product Distribution ◽  
Pyrolysis Of Biomass

Effect of potassium on the pyrolysis of biomass components: Pyrolysis behaviors, product distribution and kinetic characteristics

2021 ◽  
Vol 121 ◽  
pp. 255-264
Author(s):  
Honggang Fan ◽  
Jing Gu ◽  
Yazhuo Wang ◽  
Haoran Yuan ◽  
Yong Chen ◽  
...  
Keyword(s):  
Product Distribution ◽  
Kinetic Characteristics ◽  
Biomass Components ◽  
Pyrolysis Of Biomass

Naphthalene and Alkyl Naphthalene from Catalytic Fast Pyrolysis of Biomass Over ZSM-5 Aggregates

2020 ◽  
Vol 14 (2) ◽  
pp. 195-202 ◽  
Author(s):  
Fanjun Meng ◽  
Qiaoyan Shang ◽  
Dongliang Hua ◽  
Lei Chen ◽  
Laizhi Sun ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Fast Pyrolysis ◽  
Product Distribution ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrolysis Gas ◽  
Pyrolysis Gas Chromatography ◽  
Organic Templates ◽  
Pyrolysis Of Biomass ◽  
Pyrolytic Product

Seed-induced synthesis of ZSM-5 aggregates was carried out without organic templates. The prepared ZSM-5 aggregates were used upgrading polar sawdust-derived pyrolytic vapors for the selective production of naphthalene and alkyl naphthalene. Pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments were conducted to analyze the pyrolytic product distribution and evaluate the catalyst performance. Due to the mesopores and proper acidities of ZSM-5 aggregates, the yield of naphthalene and methylnaphthalene over ZSM-5 aggregates were 36.0 and 123.7 mg/g, which were 2.7 and 2.6 times of those respectively over the commercial ZSM-5. The total selectivities of naphthalene and alkyl naphthalene could reach 61.56%.

scholarly journals Effect of H2 as Pyrolytic Agent on the Product Distribution during Catalytic Fast Pyrolysis of Biomass Using Zeolites

2018 ◽  
Vol 32 (8) ◽  
pp. 8530-8536 ◽  
Author(s):  
Shule Wang ◽  
Henry Persson ◽  
Weihong Yang ◽  
Pär Göran Jönsson
Keyword(s):  
Fast Pyrolysis ◽  
Product Distribution ◽  
Catalytic Fast Pyrolysis ◽  
Pyrolysis Of Biomass

Production of Phenolic Compounds from Low Temperature Catalytic Fast Pyrolysis of Biomass with Activated Carbon

2014 ◽  
Vol 541-542 ◽  
pp. 190-194 ◽  
Author(s):  
Zhi Bo Zhang ◽  
Xiao Ning Ye ◽  
Qiang Lu ◽  
Chang Qing Dong ◽  
Yong Qian Liu
Keyword(s):  
Activated Carbon ◽  
Phenolic Compounds ◽  
Fast Pyrolysis ◽  
Product Distribution ◽  
Catalytic Performance ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrolysis Process ◽  
Pyrolysis Gas ◽  
Catalytic Fast Pyrolysis ◽  
Pyrolysis Of Biomass

Activated carbon (AC) was reported as a promising catalyst to selectively produce phenolic compounds from biomass using the micro-wave assisted catalytic pyrolysis technique. In order to evaluate the catalytic performance of the AC under the traditional fast pyrolysis process, analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) technique was applied for the catalytic fast pyrolysis of biomass mixed with the AC. Polar wood was selected as the feedstock, and experiments were conducted to reveal the AC-catalyzed poplar wood pyrolysis behavior and product distribution. The results indicated that the AC was also effective for the phenolics production in the traditional fast pyrolysis process at 350 °C. It could promote the formation of phenolic compounds, and inhibit most of the other pyrolytic products. The maximal phenolics yield was obtained at the biomass to catalyst ratio of 1:4, with the peak area% over 50%.

Production of Phenolic-Rich Bio-Oil from Catalytic Fast Pyrolysis of Biomass Over Tailored Fe-Based Catalysts

2020 ◽  
Vol 14 (2) ◽  
pp. 178-185 ◽  
Author(s):  
Shuangxia Yang ◽  
Xiaodong Zhang ◽  
Feixia Yang ◽  
Baofeng Zhao ◽  
Lei Chen ◽  
...  
Keyword(s):  
Calcination Temperature ◽  
Pyrolysis Temperature ◽  
Fast Pyrolysis ◽  
Product Distribution ◽  
Gas Chromatography Mass Spectrometry ◽  
Pyrolysis Gas ◽  
Bio Oil ◽  
Aldehydes And Ketones ◽  
Biomass Ratio ◽  
Pyrolysis Of Biomass

The objective of this study is to catalytically upgrade fast pyrolysis vapors of sawdust using various Fe-based catalysts for producing phenolic-rich bio-oil by analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) technique. A variety of parameters, including support characteristic, calcination temperature, pyrolysis temperature, as well as the catalyst-to-biomass ratio during the pyrolysis process were evaluated for their effects on product distribution of bio-oil. GC-MS analysis showed that compared to Fe–Mg and Fe–Al catalysts, the developed Fe–Ca catalyst significantly promoted the formation of phenols and its derivatives. The phenolic concentration declined with increasing calcination temperature and pyrolysis temperature, while increased monotonically along with increasing catalyst-to-biomass ratio. The phenolics concentration was high upto 81% (peak area) under optimum conditions of calcination temperature of 500 °C, pyrolysis temperature of 600 °C and catalyst-to-biomass ratio of 10. At higher catalyst-to-biomass ratio of 20, phenolics (88.03% in peak area) and hydrocarbons (including 7.86% of aromatics and 4.1% aliphatics) were the only two components that can be detected, with all the acids, aldehydes and ketones completely eliminated. This indicated the excellent capability of developed Fe–Ca catalyst in promoting the decomposition of lignin in biomass to generate phenolic compounds and meanwhile inhibiting the devolatilization of holocellulose.

scholarly journals Optimizing the Aromatic Product Distribution from Catalytic Fast Pyrolysis of Biomass Using Hydrothermally Synthesized Ga-MFI Zeolites

Catalysts ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 854
Author(s):  
Jian Li ◽  
Xiangyu Li ◽  
Derun Hua ◽  
Xinning Lu ◽  
Yujue Wang
Keyword(s):  
Pore Size ◽  
Beech Wood ◽  
Fast Pyrolysis ◽  
Product Distribution ◽  
Mfi Zeolite ◽  
Catalytic Fast Pyrolysis ◽  
Aromatic Product ◽  
Benzene Toluene ◽  
Pyrolysis Of Biomass ◽  
Mfi Zeolites

A series of gallium-containing MFI (Ga-MFI) zeolites with varying Ga2O3/Al2O3 ratios were synthesized using hydrothermal synthesis and tested as catalyst in catalytic fast pyrolysis (CFP) of beech wood for aromatic production. The results show that the incorporation of Ga slightly reduced the effective pore size of Ga-MFI zeolites compared to conventional HZSM-5 zeolites. Therefore, the Ga-MFI zeolites increased the aromatic selectivity for smaller aromatics such as benzene, toluene, and p-xylene and decreased the aromatic selectivity for bulkier ones such as m-xylene, o-xylene, and polyaromatics in CFP of beech wood relative to HSZM-5. In particular, the yield and selectivity of p-xylene, the most desired product from CFP of biomass, increased considerably from 1.64 C% and 33.3% for conventional HZSM-5 to 2.98–3.34 C% and 72.1–79.6% for the synthesized Ga-MFI zeolites. These results suggest that slightly reducing the pore size of MFI zeolite by Ga incorporation has a beneficial effect on optimizing the aromatic selectivity toward more valuable monoaromatic products, especially p-xylene, during CFP of biomass.

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