Catalytic upgrading of fast pyrolysis biomass vapors over fresh, spent and regenerated ZSM-5 zeolites

Zhang, Bo; Zhong, Zhaoping; Wang, Xiaobo; Ding, Kuan; Song, Zuwei

doi:10.1016/j.fuproc.2015.06.011

Cited by 56 publications

(29 citation statements)

References 24 publications

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“…This is similar to results in literature [26,27]. Phenols are important industrial chemicals and could be used to produce solvents or resins [28]. The organic-phase of the bio-oil had 250-350 peaks as opposed to the aqueous-phase of the bio-oil which had 50-100 peaks showing that many more compounds are present in the organic-phase of the bio-oil.…”

Section: Gc-ms Results Of Hinoki Wood Pyrolysissupporting

confidence: 89%

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A study of guaiacol, cellulose, and Hinoki wood pyrolysis with silica, ZrO2&TiO2 and ZSM-5 catalysts

Behrens

Cross

Akasaka

et al. 2017

Journal of Analytical and Applied Pyrolysis

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Section: Gc-ms Results Of Hinoki Wood Pyrolysissupporting

confidence: 89%

“…The increase in aromatic hydrocarbons from ZSM-5 catalyst is often observed in literature [28][29][30]. The ZrO 2 -TiO 2 has pore sizes of 11 nm, 16 nm, and 121 nm, which is much larger than the ZSM-5 catalysts' pore size of 0.58 nm.…”

Section: Gc-ms Results Of Hinoki Wood Pyrolysismentioning

confidence: 85%

A study of guaiacol, cellulose, and Hinoki wood pyrolysis with silica, ZrO2&TiO2 and ZSM-5 catalysts

Behrens

Cross

Akasaka

et al. 2017

Journal of Analytical and Applied Pyrolysis

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“…Fouling or coking is the main reason for zeolite deactivation in catalytic cracking [16]. Catalyst deactivation on zeolite occurs due to coke formation and strong adsorption of oxygenates compounds on the surface of catalyst support [17]. In order to improve catalyst lifetime and reduce operation cost on the catalyst, the regeneration or recycling of catalyst becomes essential.…”

Section: Introductionmentioning

confidence: 99%

“…A lot of attention has been paid to the kinetic study of coke formation and catalyst regeneration in various processes [18,19]. Zhang et al carried out a study on the fresh, spent and regenerated ZSM-5 catalyst during biomass catalytic pyrolysis [17]. The study was conducted on the pyrolysis of corn stover using Py-GC/MS at 500 • C. The catalysts in this study were indicated as FZ (fresh catalyst), SZ (spent catalyst) and RZ (regenerated catalyst).…”

Section: Introductionmentioning

confidence: 99%

“…Despite numerous studies investigated the cyclic stability of ZSM-5 catalyst for biomass pyrolysis indicating loss of catalytic activity (denoted by a decrease in aromatics and Poly Aromatic Hydrocarbons (PAH) formation) [17][18][19], to our knowledge, the cyclic stability and regeneration of Li-LSX zeolite and its behaviour in the presence of pre-treated microalgae has not been studied yet. Therefore, this work investigates the activity of Li-LSX-zeolite catalyst over three pyrolysis/regeneration cycles in the presence of non-treated and 1% H 2 SO 4 acid treated Isochrysis sp.…”

Section: Introductionmentioning

confidence: 99%

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Stability of Li-LSX Zeolite in the Catalytic Pyrolysis of Non-Treated and Acid Pre-Treated Isochrysis sp. Microalgae

2020

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This paper investigates the use of Li-LSX-zeolite catalyst over three regeneration cycles in presence of non-treated and acid pre-treated Isochrysis sp. microalgae. The spent and regenerated catalysts were characterised by surface analysis, elemental analysis (EA), SEM-EDS, and XRD to correlate their properties with the bio-oil yield and quality. The acid pre-treatment removed alkali metals, reducing gas yield in favour of bio-oil, but, at the same time, led to catalyst deactivation by fouling. Differently, the non-treated microalgae resulted in a bio-oil enriched in C and H and depleted in O, compared to the pre-treated ones, denoting higher deoxygenation activity. After 3 pyrolysis/regeneration cycles, the analyses suggest that there are no major changes on catalyst using non-treated microalgae. Regeneration at 700 °C has been shown to be able to remove most of the coke without damaging the Li-LSX zeolite structure. In summary, Li-LSX zeolite was effective in maintaining deoxygenation activity over three cycles in the pyrolysis of non-treated Isochrysis microalgae, while the algae pre-treatment with sulphuric acid was detrimental on the catalyst activity.

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Catalytic fast pyrolysis of lignocellulosic biomass for aromatic production: chemistry, catalyst and process

Zheng

Jiang

Zhao

et al. 2016

WIREs Energy & Environment

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Catalytic fast pyrolysis (CFP) is one of most promising technologies for aromatic production in a single‐step process. In recent years, considerable efforts have been made on the CFP of biomass for aromatic productions. However, the successful commercialization of CFP has hindered by several technical barriers, such as the rational design of continuous reactor and the development of high efficient and stable zeolite catalysts. Here, we attempt to summarize the advances in CFP of biomass from four aspects: (1) reaction chemistry, (2) reactor and operating conditions for CFP, (3) catalysts for CFP, and (4) new processes for CFP. It is expected that this review could provide some guidance for solving the technical barriers aforementioned. WIREs Energy Environ 2017, 6:e234. doi: 10.1002/wene.234 This article is categorized under: Bioenergy > Science and Materials

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Catalytic upgrading of fast pyrolysis biomass vapors over fresh, spent and regenerated ZSM-5 zeolites

Cited by 56 publications

References 24 publications

A study of guaiacol, cellulose, and Hinoki wood pyrolysis with silica, ZrO2&TiO2 and ZSM-5 catalysts

A study of guaiacol, cellulose, and Hinoki wood pyrolysis with silica, ZrO2&TiO2 and ZSM-5 catalysts

Stability of Li-LSX Zeolite in the Catalytic Pyrolysis of Non-Treated and Acid Pre-Treated Isochrysis sp. Microalgae

Catalytic fast pyrolysis of lignocellulosic biomass for aromatic production: chemistry, catalyst and process

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