Upgrading of bio-oil from biomass pyrolysis over Cu-modified β-zeolite catalyst with high selectivity and stability

Widayatno, Wahyu Bambang; Guan, Guoqing; Rizkiana, Jenny; Yang, Jingxuan; Hao, Xiaogang; Tsutsumi, Atsushi; Abudula, Abuliti

doi:10.1016/j.apcatb.2016.01.006

Cited by 120 publications

(50 citation statements)

References 36 publications

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“…Interestingly, loading of Cu and Mg on b-zeolite resulted in the obvious increase in specific surface area and pore volume when compared with the parent bzeolite. [12] However, hysteresis characteristic appeared after metal loading, suggesting that mesoporous structure was generated. This result is different from those reported ones, in which the surface area and pore size were always decreased by metal loading due to the metal sintering and/or the pore blocking.…”

Section: Resultsmentioning

confidence: 99%

“…The results are also shown in Table S2. [12] Then, further increase in Cu loading amount resulted in the obvious reduction of CH 4 and olefins yields due to the promotion of aromatization and alkylation reactions. This should be the contribution of copper species, which can be exchanged with the protons of Brønsted acid sites, resulting in the obvious increase of Lewis acid site amount.…”

Section: Resultsmentioning

confidence: 99%

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Bifunctional Mg−Cu‐Loaded β‐Zeolite: High Selectivity for the Conversion of Furfural into Monoaromatic Compounds

et al. 2018

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MgÀCu-loaded b-zeolite was prepared as an acidÀbase bifunctional catalyst for the conversion of furfural to monoaromatic compounds. It is found that this catalyst exhibited high selectivity towards benzene, toluene and xylenes (BTXs) production with anti-polycyclic-aromatic-hydrocarbon formation as well as anti-coking ability when compared with Culoaded b-zeolite and the parent b-zeolite. The product distribution indicated that addition of Cu species significantly promoted the deoxygenation and aromatization of an intermediate product of furan while Mg apparently suppressed the polyaromatization. Especially, an optimum loading amount of 0.5 wt%Mg-1 wt%Cu on b-zeolite was obtained, which showed lower catalytic deoxygenation temperature and interestingly, only benzene was detected in the liquid product at a reaction temperature over 700 8C. Also, 0.5 wt%Mg-1 wt%Cu/b-zeolite exhibited long-term stability for 10 cycles with 100 % of furfural conversion to monoaromatic compounds. The physicochemical properties of b-zeolite after Cu and Mg loadings were characterized using N 2 sorption, XRD, SEM-EDX, TEM, H 2 -TPR, UV-Vis, XPS, NH 3 -TPD and CO 2 -TPD techniques. The significant changing of acidity and basicity of b-zeolite were found after Cu and Mg loadings, which should be the main factors for the improvement of activity, selectivity and stability of the developed catalyst.[a] Dr. and 750 8C, respectively. This indicates that 1 wt%Cu/ b-zeolite and 0.5 wt%Mg-1wt%Cu/b-zeolite had high selectivity for the benzene production from furfural conversion at a reaction temperature over 700 8C. Based on these results, it can be concluded that the tuning of acid and basic sites of b-zeolite and the interaction of metal species on b-zeolite by co-doping of Mg with Cu, the changing of reaction temperature as well as WHSV can effectively control the product distribution from the furfural conversion.According to the presented results, the possible mechanism for the catalytic conversion of furfural over MgÀCu-doped bzeolite can be proposed following based on previous liter-Figure 4. Effect of WHSV on product yields and aromatic distributions in liquid products obtained from the catalytic deoxygenation of furfural at a reaction temperature of 600 8C and a TOS of 1 h using (A,B) b-zeolite, (C,D) 1wt%Cu/b-zeolite and (E,F) 0.5 wt%Mg-1 wt%Cu/b-zeolite.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Bifunctional Mg−Cu‐Loaded β‐Zeolite: High Selectivity for the Conversion of Furfural into Monoaromatic Compounds

et al. 2018

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“…Low concentration Cu-modified β-zeolite (0.5 wt%) increased selectivity to hydrocarbons during catalytic upgrading of Japanese knotweed pyrolysis bio-oil at 600 • C when compared to β-zeolite alone. It also decreased the coke deposition on Cu/β-zeolite catalyst [50]. Nickel substituted HZSM-5 catalyst improved hydrocarbon yield (around 16 wt%) and reduced coke yield during catalytic upgrading of aspen wood pyrolysis bio-oil vapor at 600 • C when compared to HZSM-5 alone [51].…”

Section: Reducing Catalyst Deactivation In Catalytic Crackingmentioning

confidence: 95%

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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“…It was found that catalysts prepared by the cyclodextrin-assisted co-impregnation method were more active than the materials synthesized via impregnation. In contrast to the previous work [39], a relatively high amount of Cu was incorporated into the structure of mesoporous materials (the highest efficiency of the hydrocarbons production was achieved for the samples containing 20% of Cu). In spite of a slightly lower acidity and surface area, the Cu/KIT-6 catalyst was more active in the formation of monocyclic aromatic compounds than the Cu/MCM-41 sample.…”

Section: Modification Of Zeolites and Mesoporous Materials By The Addmentioning

confidence: 67%

“…Widayatno et al [39] applied to this process a Cu-modified β-zeolite catalyst (containing up to 3% metal). The performed investigations revealed that the presence of copper also promoted the production of hydrocarbons; however, it was impossible to avoid coke formation during the upgrading process.…”

Section: Modification Of Zeolites and Mesoporous Materials By The Addmentioning

confidence: 99%

Development of Heterogeneous Catalysts for Thermo-Chemical Conversion of Lignocellulosic Biomass

Grams

Ruppert

2017

Energies

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Lignocellulosic biomass is one of the most attractive renewable resources that can be used for the production of biofuels and valuable chemicals. However, problems associated with the low efficiency of its conversion and poor selectivity to desired products remain. Therefore, in recent years researchers have focused on the design of highly active and stable catalysts, enabling an increase in the effectiveness of lignocellulosic biomass processing. This work is devoted to the presentation of the latest trends in the studies of the heterogeneous catalysts used in thermo-chemical conversion of such feedstock. The systems applied for the production of both bio-oil and hydrogen-rich gas are discussed. Zeolites, mesoporous materials, metal oxides, supported metal catalysts, and modifications of their structure are described. Moreover, the impact of the physicochemical properties of the presented catalyst on their catalytic performance in the mentioned processes is demonstrated.

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Upgrading of bio-oil from biomass pyrolysis over Cu-modified β-zeolite catalyst with high selectivity and stability

Cited by 120 publications

References 36 publications

Bifunctional Mg−Cu‐Loaded β‐Zeolite: High Selectivity for the Conversion of Furfural into Monoaromatic Compounds

Bifunctional Mg−Cu‐Loaded β‐Zeolite: High Selectivity for the Conversion of Furfural into Monoaromatic Compounds

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

Development of Heterogeneous Catalysts for Thermo-Chemical Conversion of Lignocellulosic Biomass

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