Co-cracking of bio-oil model compound mixtures and ethanol over different metal oxide-modified HZSM-5 catalysts

Wang, Shurong; Cai, Qinjie; Chen, Junhao; Zhang, Li; Zhu, Lingjun; Luo, Zhongyang

doi:10.1016/j.fuel.2015.08.011

Cited by 62 publications

(33 citation statements)

References 54 publications

(42 reference statements)

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“…Catalytic cracking is an effective bio-oil upgrading method, and it is generally done in the presence of heterogeneous catalysts at atmospheric pressure and at temperatures ranging from 350 • C to 650 • C. Catalytic cracking removes oxygen in the form of CO, CO 2 , and/or H 2 O [27]. The oxygenated compounds in raw bio-oil can be transformed into light hydrocarbon biofuel containing high contents of aromatic hydrocarbons by catalytic cracking.…”

Section: Catalytic Crackingmentioning

confidence: 99%

“…Co-cracking reactants with high H/C ratios including alcohols, FCC gas oil, low-density polyethylene (LDPE) plastic, H 2 , and stream are effective at suppressing coke formation during bio-oil catalytic cracking [27,82]. The co-cracking of bio-oil with methanol significantly reduced coke deposition on Ni/HZSM-5 catalyst during pine sawdust bio-oil upgrading [76].…”

Section: Reducing Catalyst Deactivation In Catalytic Crackingmentioning

confidence: 99%

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Application, Deactivation, and Regeneration of Heterogeneous Catalysts in Bio-Oil Upgrading

et al. 2016

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Abstract:The massive consumption of fossil fuels and associated environmental issues are leading to an increased interest in alternative resources such as biofuels. The renewable biofuels can be upgraded from bio-oils that are derived from biomass pyrolysis. Catalytic cracking and hydrodeoxygenation (HDO) are two of the most promising bio-oil upgrading processes for biofuel production. Heterogeneous catalysts are essential for upgrading bio-oil into hydrocarbon biofuel. Although advances have been achieved, the deactivation and regeneration of catalysts still remains a challenge. This review focuses on the current progress and challenges of heterogeneous catalyst application, deactivation, and regeneration. The technologies of catalysts deactivation, reduction, and regeneration for improving catalyst activity and stability are discussed. Some suggestions for future research including catalyst mechanism, catalyst development, process integration, and biomass modification for the production of hydrocarbon biofuels are provided.

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Section: Catalytic Crackingmentioning

confidence: 99%

Section: Reducing Catalyst Deactivation In Catalytic Crackingmentioning

confidence: 99%

Application, Deactivation, and Regeneration of Heterogeneous Catalysts in Bio-Oil Upgrading

et al. 2016

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“…In particular, HAc, HPO, and CPO derivatives were the typical compounds, with relative contents of 23.9%, 27.9%, and 5.1%, respectively. Therefore, HAc, HPO, and CPO were selected as model compounds to study their individual hydrogenation-cracking performances, and they were mixed to prepare a SDF and the mixing ratio was set as 5:6:1, respectively (Wang et al 2014a(Wang et al , 2015. Furthermore, MeOH (Sinopharm Chemical Reagent Co., Beijing, China) was used as the cocracking reactant, and the blending ratio of MeOH in the feedstock was 0% to 40%.…”

Section: Methodsmentioning

confidence: 99%

“…The hydrogenation results of individual components showed that the ketones could be transformed into alcohols, which was a potential hydrogen supplier during cocracking (Wang et al 2013b(Wang et al , 2015. Meanwhile, the author's previous study demonstrated that alcohols could promote HAc cracking (Wang et al 2014b).…”

Section: Interaction and Hydrogen Transfer Among Components In Sdf Dumentioning

confidence: 98%

Aromatic Hydrocarbon Generation from a Simulated Bio-oil Fraction by Dual-stage Hydrogenation-cracking: Hydrogen Supply and Transfer Behaviors

Cai¹,

Xu²,

Zhang³

et al. 2017

BioResources

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The improvement of the hydrogen-poor composition of bio-oil is important for its cracking to produce aromatic hydrocarbons. In this work, a mild hydrogenation pre-treatment and methanol cocracking were combined to implement proper hydrogen supplementation for cracking. Acetic acid (HAc), hydroxypropanone (HPO), and cyclopentanone (CPO) were selected as model compounds and mixed to prepare a simulated distilled fraction (SDF) of bio-oil. The hydrogen supply and transfer behaviours in hydrogenation-cracking were investigated. For the conversion of individual components: HAc was difficult to be hydrogenated, and therefore in the cracking stage, the conversion and oil phase yield were low; ketones were successfully hydrogenated to alcohols, and thus high aromatic hydrocarbon yields were achieved. Hydrogenation-cracking of SDF showed that the inferior performance of HAc was improved by an internal hydrogen transfer, namely the alcohols produced from ketones supplied hydrogen for HAc conversion. However, because of the high HAc content in SDF, this hydrogen supplement was not sufficient. Therefore, methanol (MeOH) was used as the coreactant for secondary hydrogen supply. The integral efficient conversion of SDF and MeOH to aromatic hydrocarbons was achieved when the MeOH blending ratio was 30%. Finally, a reaction mechanism of hydrogenationcocracking was proposed.

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“…The addition of light alcohols (methanol, ethanol) to bio‐oil is effective for stabilizing the raw bio‐oil during storage. Besides, the co‐feeding of alcohols with bio‐oil reduces significantly the coke deposited over metal‐modified ZSM‐5 zeolites during catalytic cracking . Gayubo et al .…”

Section: Bio‐oil Upgrading To Fuels and Platform Chemicals By Catalytmentioning

confidence: 99%

Recent research progress on bio‐oil conversion into bio‐fuels and raw chemicals: a review

Valle

Remiro

García-Gómez

et al. 2018

J of Chemical Tech & Biotech

139

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Recent advances in lignocellulosic biomass valorization for producing fuels and commodities (olefins and BTX aromatics) are gathered in this paper, with a focus on the conversion of bio-oil (produced by fast pyrolysis of biomass). The main valorization routes are: (i) conditioning of bio-oil (by esterification, aldol condensation, ketonization, in situ cracking, and mild hydrodeoxygenation) for its use as a fuel or stable raw material for further catalytic processing; (ii) production of fuels by deep hydrodeoxygenation; (iii) ex situ catalytic cracking (in line) of the volatiles produced in biomass pyrolysis, aimed at the selective production of olefins and aromatics; (iv) cracking of raw bio-oil in units designed with specific objectives concerning selectivity; and (v) processing in fluidized bed catalytic cracking (FCC) units. This review deals with the technological evolution of these routes, in terms of catalysts, reaction conditions, reactors, and product yields. A study has been carried out on the current state-of-knowledge of the technological capacity, advantages and disadvantages of the different routes, as well as on the prospects for the implementation of each route within the scope of the Sustainable Refinery. /jctb 2 -C 4 olefins 147 a % Relative area: Percentage of total peak area detected by GC/MS semi-quantitative analysis.

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Co-cracking of bio-oil model compound mixtures and ethanol over different metal oxide-modified HZSM-5 catalysts

Cited by 62 publications

References 54 publications

Application, Deactivation, and Regeneration of Heterogeneous Catalysts in Bio-Oil Upgrading

Application, Deactivation, and Regeneration of Heterogeneous Catalysts in Bio-Oil Upgrading

Aromatic Hydrocarbon Generation from a Simulated Bio-oil Fraction by Dual-stage Hydrogenation-cracking: Hydrogen Supply and Transfer Behaviors

Recent research progress on bio‐oil conversion into bio‐fuels and raw chemicals: a review

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