Synergetic conversion of microalgae and CO2into value-added chemicals under hydrothermal conditions

Yang, Yang; Zhong, Heng; He, Runtian; Wang, Xiaoguang; Cheng, Jie; Yao, Guodong; Jin, Fangming

doi:10.1039/c8gc03645d

Cited by 73 publications

(44 citation statements)

References 26 publications

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“… 25 Moreover, Moret’s group has demonstrated the production of FA from direct reduction of CO 2 gas by H 2 using a homogeneous [RuCl 2 (PTA) 4 ] complex in an acidic aqueous solution. 26 Jin’s group also reported the hydrothermal reduction of CO 2 into FA using metallic manganese, 27 H 2 S, 28 and microalgae, 29 respectively. However, in reported conversion routes of biomass into FA, H 2 O 2 or O 2 was generally used as an oxidant and thus led to high energy costs due to the compressing gas or potential insecurity hazards.…”

Section: Introductionmentioning

confidence: 99%

Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag₂O to Ag under Mild Hydrothermal Conditions

Cheng

et al. 2021

ACS Omega

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Formation of formic acid from renewable biomass resources is of great interest since formic acid is a widely used platform chemical and has recently been regarded as an important liquid hydrogen carrier. Herein, a novel approach is reported for the conversion of glucose, the constituent carbohydrate from the cellulose fraction of biomass, to formic acid under mild hydrothermal conditions with simultaneous reduction of Ag 2 O to Ag. Results showed that glucose was selectively converted to formic acid with an optimum yield of 40.7% and glycolic acid with a yield of 6.1% with 53.2% glucose converting to carbon dioxide (CO 2 ) immediately at a mild reaction temperature of 135 °C for 30 min. In addition, Ag 2 O was used as a solid oxidant for glucose oxidation, which avoids the use of traditionally dangerous liquid oxidant H 2 O 2 . Furthermore, complete conversion of Ag 2 O to Ag can be achieved. This study not only developed a new method for value-added chemical production from renewable biomass but also explored an alternative low-carbon and energy-saving route for silver extraction and recovery.

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Section: Introductionmentioning

confidence: 99%

Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag₂O to Ag under Mild Hydrothermal Conditions

Cheng

et al. 2021

ACS Omega

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“…Biomass, the most abundant renewable carbon-neutral resource on Earth, is the only non-fossil carbon-based material which can be converted to fuels and platform chemicals. [1][2][3][4] Development of efficient and costeffective process for biomass conversion to value-added products has attracted extended attention. [5][6][7] GVL, a sustainable liquid for energy and carbon-based chemicals production possesses excellent properties for energy valorization such as low melting (-31 o C), high boiling (207 o C) and open cup flash points (96 o C).…”

Section: Introductionmentioning

confidence: 99%

Water as Hydrogen Source for Highly Efficient Conversion of Biomass-Derived Levulinic Acid into γ-Valerolactone over Raney Ni Catalyst

Ma¹,

Jin²,

Guo³

et al. 2021

Preprint

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Gamma (γ)-valerolactone (GVL) is a promising liquid for energy and carbon-based chemicals. Although many researches regarding the GVL synthesis from carbohydrate biomass, most of them involve the use of noble metals accompanying with the high-purity and high-pressure gaseous hydrogen, existing high cost in large-scale application and safety risk during the transportation and operation process. In this paper, the cheap metal Fe was employed as a reductant for splitting water to produce hydrogen under mild hydrothermal conditions, and commercial Raney Ni was used as a catalyst for in situ hydrogenation of biomass-derived levulinic acid (LA). More than 95% yield of GVL can be attained at 150 oC for 2 h and ~ 90% yield of GVL was also achieved at 100 oC by increasing the reaction time to 5 h. Furthermore, Raney Ni remains the stable catalytic activity after being recycled for 4 times at 150 oC. This work provides a safe and facile process for highly efficient hydrogenation of biomass-derived LA to GVL without precious metals.

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“…In contrast to other renewable energy, such as solar, hydrogen, tidal, wind energy, biomass is the only renewable resources of fixed carbon of replacing fossil fuels, which is crucial for the production of liquid hydrocarbon fuels and chemicals [3][4][5][6][7] . Meanwhile, It has been predicted that more than 20% of liquid fuels and 25% of chemicals by 2030 will be synthesized from biomass 2,[8][9][10] . In recent years, conversion of biomass and its derived levulinic acid (LA) into value-added products has been vastly reported, which has attracted worldwide attention.…”

Section: Introductionmentioning

confidence: 99%

Facile Conversion of Levulinic Acid and Glucose to γ-Valerolactone over Raney-Ni Catalyst Without an External Hydrogen Donor

He¹,

Ma²,

Yao³

et al. 2021

Preprint

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Finding sustainable resources has always been a strong research due to the current massive consumption of non-renewable fossil fuels on a global scale. Recently, the transformation of renewable biomass into value-added chemicals has become a crucial alternative to solve this problem. Levulinic acid (LA) and glucose are the most significant biomass-derived compounds and γ-valerolactone (GVL) is considered to be the important intermediate of chemicals and fuels. However, the safety and cost of external hydrogen are the main obstacles for the production of GVL from biomass and its derived chemicals by catalytic transfer hydrogenation process. Herein, we introduce the conversion of LA and glucose-derived LA into GVL without an external hydrogen donor, respectively. One process is the production of GVL from LA in a maximum yield of 99% at relatively mild conditions (150 oC) for 3 h with hydrogen, which is from the decarboxylation reaction of formic acid (FA) in water with Raney Ni. The other process is conversion of glucose into LA and GVL in two steps. More than 50% yield of LA and 67% yield of GVL could be obtained from glucose with 3% HCl solution and Raney Ni.

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Synergetic conversion of microalgae and CO₂into value-added chemicals under hydrothermal conditions

Abstract: CO2 (or HCO3−) is selectively reduced into formate with microalgae as the reductant, and simultaneously HCO3− significantly enhances the conversion of microalgae into organic acids and N-substituted lactam as the oxidant.

Cited by 73 publications

References 26 publications

Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag₂O to Ag under Mild Hydrothermal Conditions

Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag₂O to Ag under Mild Hydrothermal Conditions

Water as Hydrogen Source for Highly Efficient Conversion of Biomass-Derived Levulinic Acid into γ-Valerolactone over Raney Ni Catalyst

Facile Conversion of Levulinic Acid and Glucose to γ-Valerolactone over Raney-Ni Catalyst Without an External Hydrogen Donor

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Synergetic conversion of microalgae and CO2into value-added chemicals under hydrothermal conditions

Abstract: CO2 (or HCO3−) is selectively reduced into formate with microalgae as the reductant, and simultaneously HCO3− significantly enhances the conversion of microalgae into organic acids and N-substituted lactam as the oxidant.

Cited by 73 publications

References 26 publications

Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag2O to Ag under Mild Hydrothermal Conditions

Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag2O to Ag under Mild Hydrothermal Conditions

Water as Hydrogen Source for Highly Efficient Conversion of Biomass-Derived Levulinic Acid into γ-Valerolactone over Raney Ni Catalyst

Facile Conversion of Levulinic Acid and Glucose to γ-Valerolactone over Raney-Ni Catalyst Without an External Hydrogen Donor

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Product

Resources

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Synergetic conversion of microalgae and CO₂into value-added chemicals under hydrothermal conditions

Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag₂O to Ag under Mild Hydrothermal Conditions

Formation of Formic Acid from Glucose with Simultaneous Conversion of Ag₂O to Ag under Mild Hydrothermal Conditions