Effect of crystal size of ZSM-5 on the aromatic yield and selectivity from catalytic fast pyrolysis of biomass

Zheng, Anqing; Zhao, Zengli; Chang, Sheng; Huang, Zhen; Wu, Haiming; Wang, Xiaobo; He, Fang; Li, Haibin

doi:10.1016/j.molcata.2013.11.005

Cited by 155 publications

(104 citation statements)

References 32 publications

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“…Good biofuel should have neutral pH to avoid the corrosion problems when the fuel is applied into the internal combustion engine. Fan et al reported the significant increase in the pH of rape straw bio-oil from 2.30 to 5.15 by using H-ZSM5 as a catalyst [52]. Similar result was also reported for corncob catalytic pyrolysis.…”

Section: Properties Of Bio-oil Derived From Catalytic Pyrolysissupporting

confidence: 62%

Catalytic Pyrolysis of Biomass to Synthesize Bio-oil and Chemicals: A Review

Dewayanto¹,

Nordin²

2016

CHEMICA: Jurnal Teknik Kimia

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Section: Properties Of Bio-oil Derived From Catalytic Pyrolysissupporting

confidence: 62%

Catalytic Pyrolysis of Biomass to Synthesize Bio-oil and Chemicals: A Review

Dewayanto¹,

Nordin²

2016

CHEMICA: Jurnal Teknik Kimia

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“…N 2 ) for the adsorption and desorption analysis, traditional ammonia-TPD methods have some drawbacks, such as complicated testing procedure, uncertainty on low temperature peaks and the influence of physical adsorption on low temperature peaks. To overcome those drawbacks, a modified ammonia-TPD method was used, with ammonia hydroxide instead of pure NH 3 and carrier gas [19][20][21]. For used catalysts, they were calcined in the air at 600 o C until the coke was removed completely before the analysis in order not to influence the NH 3 desorption.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Catalytic cracking of inedible camelina oils to hydrocarbon fuels over bifunctional Zn/ZSM-5 catalysts

Zhao

Wei

Julson

et al. 2015

Korean J. Chem. Eng.

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Catalytic cracking of camelina oils to hydrocarbon fuels over ZSM-5 and ZSM-5 impregnated with Zn 2+ (named bifunctional catalyst) was individually carried out at 500 o C using a tubular fixed-bed reactor. Fresh and used catalysts were characterized by ammonia temperature-programmed desorption (NH 3 -TPD), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and nitrogen isothermal adsorption/desorption micropore analyzer. The effect of catalysts on the yield rate and qualities of products was discussed. The loading of Zn 2+ to ZSM-5 provided additional acid sites and increased the ratio of Lewis acid site to Brøn-sted acid site. BET results revealed that the surface area and pore volume of the catalyst decreased after ZSM-5 was impregnated with zinc, while the pore size increased. When using the bifunctional catalyst, the pH value and heating value of upgraded camelina oils increased, while the oxygen content and moisture content decreased. Additionally, the yield rate of hydrocarbon fuels increased, while the density and oxygen content decreased. Because of a high content of fatty acids, the distillation residues of cracking oils might be recycled to the process to improve the hydrocarbon fuel yield rate.

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“…The experimental results showed that ZSM-5 with crystal size of 200 nm exhibited the maximum aromatic yield, but low selectivity to benzene, toluene, and xylene yields, which could be attributed to its micropore structure and high Brøsted-to-Lewis acid sites ratio [127]. Cellulose exhibited the maximum aromatic yield of 38.4 % and minimum non-condensable gas yield of 18.4 %.…”

Section: The Catalytic Pyrolysis Of Cellulosementioning

confidence: 98%

The Efficient and Sustainable Pyrolysis and Gasification of Biomass by Catalytic Processes

Tong

Chen

et al. 2015

ChemBioEng Reviews

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The biomass thermochemical conversion process includes two major approaches: pyrolysis and gasification. The advantages of pyrolysis and gasification of biomass feedstock in the presence of various catalyst systems are critically reviewed. The role of a catalyst in pyrolysis of biomass and its major components cellulose, hemicellulose and lignin is investigated. The discussion is focused on elucidating the reaction mechanisms involved in the formation of aromatics and phenols during catalytic pyrolysis. The pyrolysis performance of two major catalyst systems, metal-containing catalysts and zeolite catalysts, is analyzed. The impact of the catalyst on the deoxygenation efficiency is ascertained. In the catalytic gasification process, two major catalyst systems including alkali metals and noble metal catalysts are employed. This review illustrates the function of the catalyst in improving the yields of syngas and hydrogen and the mechanistic aspects of the reduction of tar and char formed during gasification. Ultimately, the review is intended to introduce the state of art in the biomass thermochemical conversion with an emphasis on the importance of the catalyst in producing value-added products.

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Effect of crystal size of ZSM-5 on the aromatic yield and selectivity from catalytic fast pyrolysis of biomass

Cited by 155 publications

References 32 publications

Catalytic Pyrolysis of Biomass to Synthesize Bio-oil and Chemicals: A Review

Catalytic Pyrolysis of Biomass to Synthesize Bio-oil and Chemicals: A Review

Catalytic cracking of inedible camelina oils to hydrocarbon fuels over bifunctional Zn/ZSM-5 catalysts

The Efficient and Sustainable Pyrolysis and Gasification of Biomass by Catalytic Processes

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