From Douglas fir to renewable H2-enriched syngas via ex situ catalytic pyrolysis over metal nanoparticles–nanocellulose derived carbon catalysts

2020 ◽  
Vol 4 (3) ◽  
pp. 1084-1087 ◽  
Author(s):  
Yayun Zhang ◽  
Dengle Duan ◽  
Hanwu Lei ◽  
Chenxi Wang ◽  
Moriko Qian ◽  
...  
Keyword(s):  
Metal Nanoparticles ◽  
Catalytic Pyrolysis ◽  
Douglas Fir ◽  
Optimal Performance ◽  
Ex Situ ◽  
Carbon Catalyst ◽  
Carbon Catalysts ◽  
Pyrolysis Of Biomass

A carbon catalyst, which was derived from nanocellulose (NC) and doped with uniform sized and well dispersed metal nanoparticles, showed optimal performance for the generation of H2-enriched (67.4 vol%) syngas from the catalytic pyrolysis of biomass.

Regulating light olefins or aromatics production in ex-situ catalytic pyrolysis of biomass by engineering the structure of tin modified ZSM-5 catalyst

2021 ◽  
pp. 124975
Author(s):  
Jingyuan Shang ◽  
Guangbin Fu ◽  
Zhenping Cai ◽  
Xiang Feng ◽  
Yongxiao Tuo ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Ex Situ ◽  
Light Olefins ◽  
Pyrolysis Of Biomass

scholarly journals Is it possible to increase the oil yield of catalytic pyrolysis of biomass? A study using commercially-available acid and basic catalysts in ex-situ and in-situ modus

2019 ◽  
Vol 137 ◽  
pp. 77-85 ◽  
Author(s):  
Daniele Castello ◽  
Songbo He ◽  
M. Pilar Ruiz ◽  
Roel J.M. Westerhof ◽  
Hero Jan Heeres ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Ex Situ ◽  
Oil Yield ◽  
Basic Catalysts ◽  
Pyrolysis Of Biomass

scholarly journals Insight into the Ex Situ Catalytic Pyrolysis of Biomass over Char Supported Metals Catalyst: Syngas Production and Tar Decomposition

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1397 ◽  
Author(s):  
Mian Hu ◽  
Baihui Cui ◽  
Bo Xiao ◽  
Shiyi Luo ◽  
Dabin Guo
Keyword(s):  
Active Sites ◽  
Catalytic Pyrolysis ◽  
Supported Catalyst ◽  
Ex Situ ◽  
Molar Ratio ◽  
Ni Catalyst ◽  
Nitrogenous Compounds ◽  
Syngas Production ◽  
Valence States ◽  
Pyrolysis Of Biomass

Ex situ catalytic pyrolysis of biomass using char-supported nanoparticles metals (Fe and Ni) catalyst for syngas production and tar decomposition was investigated. The characterizations of fresh Fe-Ni/char catalysts were determined by TGA, SEM–EDS, Brunauer–Emmett–Teller (BET), and XPS. The results indicated that nanoparticles metal substances (Fe and Ni) successfully impregnated into the char support and increased the thermal stability of Fe-Ni/char. Fe-Ni/char catalyst exhibited relatively superior catalytic performance, where the syngas yield and the molar ratio of H2/CO were 0.91 Nm3/kg biomass and 1.64, respectively. Moreover, the lowest tar yield (43.21 g/kg biomass) and the highest tar catalytic conversion efficiency (84.97 wt.%) were also obtained under the condition of Ni/char. Ultimate analysis and GC–MS were employed to analyze the characterization of tar, and the results indicated that the percentage of aromatic hydrocarbons appreciably increased with the significantly decrease in oxygenated compounds and nitrogenous compounds, especially in Fe-Ni/char catalyst, when compared with no catalyst pyrolysis. After catalytic pyrolysis, XPS was employed to investigate the surface valence states of the characteristic elements in the catalysts. The results indicated that the metallic oxides (MexOy) were reduced to metallic Me0 as active sites for tar catalytic pyrolysis. The main reactions pathway involved during ex situ catalytic pyrolysis of biomass based on char-supported catalyst was proposed. These findings indicate that char has the potential to be used as an efficient and low-cost catalyst toward biomass pyrolysis for syngas production and tar decomposition.

Effect of acidity and manner of addition of HZSM-5 catalyst on the aromatic products during catalytic upgrading of biomass pyrolysis

BioResources ◽  
2017 ◽  
Vol 12 (4) ◽  
pp. 8286-8305
Author(s):  
Yunwu Zheng ◽  
Lei Tao ◽  
Xiaoqin Yang ◽  
Yuanbo Huang ◽  
Can Liu ◽  
...  
Keyword(s):  
Aromatic Hydrocarbons ◽  
Aromatic Compounds ◽  
Catalytic Pyrolysis ◽  
Calorific Value ◽  
Ex Situ ◽  
Average Pore ◽  
Polycyclic Aromatic ◽  
Hydrocarbon Yield ◽  
Pyrolysis Of Biomass

To investigate the effects of acidity on aromatic yield and selectivity during the catalytic pyrolysis of biomass, the silica to alumina ratio (SAR), as well as the amount and addition method of HZSM-5 catalyst were varied. The results showed that with an increase in the SAR, the pore volume was reduced, the average pore diameter of the HZSM-5 catalyst increased, and the total acidity and catalytic activity decreased. Meanwhile, the increase in acidity led to an increased non-condensable gases yield, which was associated with a decrease in the bio-oil yield. The calorific value and moisture content increased, and the ability of deoxygenation was enhanced. The single ring aromatic hydrocarbons (BTXE) content increased, and the polycyclic aromatic hydrocarbons (2-ring, 3-ring) content decreased noticeably. The selectivity of BTXE decreased substantially from 69 wt.% to 6.85 wt.%, while the selectivity of naphthalene and its derivatives increased remarkably, as the SAR increased. Additionally, the acidity increased the selectivity of unsubstituted aromatic compounds, but decreased the selectivity of substituted aromatic compounds. Moreover, ex situ catalytic pyrolysis more effectively enhanced the aromatic hydrocarbon yield and selectivity (69 wt.%) compared with in situ catalytic pyrolysis (27.51 wt.%), and in situ catalytic pyrolysis generated more polyaromatics and solid residue.

Species transport and reaction characteristics between gas and solid phases for ex-situ catalytic pyrolysis of biomass

Energy ◽  
2021 ◽  
Vol 225 ◽  
pp. 120212
Author(s):  
Yuchun Zhang ◽  
Peng Fu ◽  
Weiming Yi ◽  
Zhihe Li ◽  
Zhiyu Li ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Ex Situ ◽  
Species Transport ◽  
Reaction Characteristics ◽  
Solid Phases ◽  
Pyrolysis Of Biomass

scholarly journals Phenols production form Douglas fir catalytic pyrolysis with MgO and biomass-derived activated carbon catalysts

Energy ◽  
2020 ◽  
Vol 199 ◽  
pp. 117459 ◽  
Author(s):  
Erguang Huo ◽  
Dengle Duan ◽  
Hanwu Lei ◽  
Chao Liu ◽  
Yayun Zhang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Catalytic Pyrolysis ◽  
Douglas Fir ◽  
Production Form ◽  
Carbon Catalysts

scholarly journals Influence of the Zeolite ZSM-5 on Catalytic Pyrolysis of Biomass via TG-FTIR

BioResources ◽  
2015 ◽  
Vol 10 (3) ◽  
Author(s):  
Ze Wang ◽  
Siwei Liu ◽  
Weigang Lin ◽  
Wenli Song
Keyword(s):  
Catalytic Pyrolysis ◽  
Pyrolysis Of Biomass

A Fe-Ca/SiO2 catalyst for efficient production of light aromatics from catalytic pyrolysis of biomass

Fuel ◽  
2020 ◽  
Vol 279 ◽  
pp. 118500 ◽  
Author(s):  
Qiuxiang Lu ◽  
Shenfu Yuan ◽  
Chunxiang Liu ◽  
Tao Zhang ◽  
Xiaoguang Xie ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Efficient Production ◽  
Pyrolysis Of Biomass

Solar assisted catalytic pyrolysis of chicken-litter waste with in-situ and ex-situ loading of CaO and char

Fuel ◽  
2019 ◽  
Vol 246 ◽  
pp. 408-416 ◽  
Author(s):  
Haftom Weldekidan ◽  
Vladimir Strezov ◽  
Tao Kan ◽  
Ravinder Kumar ◽  
Jing He ◽  
...  
Keyword(s):  
Catalytic Pyrolysis ◽  
Ex Situ ◽  
Chicken Litter

Catalytic Pyrolysis of Biomass in a Fluidized Bed Reactor

2007 ◽  
Vol 85 (5) ◽  
pp. 473-480 ◽  
Author(s):  
A. Aho ◽  
N. Kumar ◽  
K. Eränen ◽  
T. Salmi ◽  
M. Hupa ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Catalytic Pyrolysis ◽  
Fluidized Bed Reactor ◽  
Pyrolysis Of Biomass
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