Catalytic Pyrolysis of Biomass and Polymer Wastes

Zhang, Laibao; Bao, Zhenghong; Xia, Shunxiang; Lü, Qiang; Walters, Keisha B.

doi:10.3390/catal8120659

Cited by 128 publications

(61 citation statements)

References 268 publications

(294 reference statements)

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“…Thus, a combined strategy involving the catalytic co-pyrolysis of lignocellulosic biomass with polymer waste has emerged as a very promising solution for the production of drop-in fuels in a simple, one-step process. Recent progress in this strategy can be found in different extensive reviews [27][28][29]. The catalysts successfully studied for this purpose were mainly zeolites (HY and HZSM-5), mesoporous materials (MCM-41 and SBA-15), alumina, spent Fluid Catalytic Cracking (FCC) catalysts, and a number of minerals, such as bentonite.…”

Section: Of 17mentioning

confidence: 99%

Ca-based Catalysts for the Production of High-Quality Bio-Oils from the Catalytic Co-Pyrolysis of Grape Seeds and Waste Tyres

et al. 2019

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The catalytic co-pyrolysis of grape seeds and waste tyres for the production of high-quality bio-oils was studied in a pilot-scale Auger reactor using different low-cost Ca-based catalysts. All the products of the process (solid, liquid, and gas) were comprehensively analysed. The results demonstrate that this upgrading strategy is suitable for the production of better-quality bio-oils with major potential for use as drop-in fuels. Although very good results were obtained regardless of the nature of the Ca-based catalyst, the best results were achieved using a high-purity CaO obtained from the calcination of natural limestone at 900 °C. Specifically, by adding 20 wt% waste tyres and using a feedstock to CaO mass ratio of 2:1, a practically deoxygenated bio-oil (0.5 wt% of oxygen content) was obtained with a significant heating value of 41.7 MJ/kg, confirming its potential for use in energy applications. The total basicity of the catalyst and the presence of a pure CaO crystalline phase with marginal impurities seem to be key parameters facilitating the prevalence of aromatisation and hydrodeoxygenation routes over the de-acidification and deoxygenation of the vapours through ketonisation and esterification reactions, leading to a highly aromatic biofuel. In addition, owing to the CO2-capture effect inherent to these catalysts, a more environmentally friendly gas product was produced, comprising H2 and CH4 as the main components.

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Section: Of 17mentioning

confidence: 99%

Ca-based Catalysts for the Production of High-Quality Bio-Oils from the Catalytic Co-Pyrolysis of Grape Seeds and Waste Tyres

et al. 2019

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“…Lignocellulosic biomass is the most abundant and sustainable carbon resource on the earth [3]. It has therefore been considered attractive feedstock for producing valuable aromatic hydrocarbons, such as benzene, toluene, and xylenes (BTXs), which are the building-blocks of the petrochemical industry to produce numerous petrochemical intermediates and commercial products [1,4,5]. Among many conversion technologies, catalytic fast pyrolysis (CFP) of biomass with zeolite catalysts has attracted growing attention because it can directly convert lignocellulosic biomass to valuable aromatic hydrocarbons, especially BTXs.…”

Section: Introductionmentioning

confidence: 99%

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

Hua

et al. 2019

Catalysts

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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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“…Pyrolysis is the thermal degradation of biomass materials in the absence of oxygen [16]. It can be performed at a moderate temperature (400 600°C) for a short period of time [17]. Products of pyrolysis may comprise gases (methane, hydrogen, carbon monoxide, dioxide), liquids (water, and oil/tars) and solids (charcoal).…”

Section: Efb Pyrolysismentioning

confidence: 99%

Exploitation of Empty Palm Fruit Bunch for the Generation of Electricity

Onyechi

Igwegbe

2019

JENRR

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Electricity is very important for the growth and economy of a country. Biomass wastes such as waste from oil palm plantation companies can be harnessed for this purpose since they are usually abundant in nature. The aim of this study is to evaluate the utilization of empty palm fruit bunch for the generation of electricity. The empty fruit bunch (EFB) was used in firing a steam turbine plant (boiler) for the generation of electricity. The power plant that was used in this research is owned by PRESCO Nigeria Limited located in Ikpoba-Okha local government area of Edo state. 1.7 MW of electricity was generated by burning empty fruit bunch (EFB) at a rate of 896 kg/h when the steam boiler was used. This value was compared with the traditional power plant fired using methane gas which produces 4.5MW. This value (1.7 MW) shows that EFB is a very good alternative for firing a boiler plant, power generation and elimination of wastes.

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Catalytic Pyrolysis of Biomass and Polymer Wastes

Cited by 128 publications

References 268 publications

Ca-based Catalysts for the Production of High-Quality Bio-Oils from the Catalytic Co-Pyrolysis of Grape Seeds and Waste Tyres

Ca-based Catalysts for the Production of High-Quality Bio-Oils from the Catalytic Co-Pyrolysis of Grape Seeds and Waste Tyres

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

Exploitation of Empty Palm Fruit Bunch for the Generation of Electricity

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