Production of formic acid from CO2 reduction by means of potassium borohydride at ambient conditions

Fletcher, Cameron; Jiang, Yijiao; Amal, Rose

doi:10.1016/j.ces.2015.06.040

Cited by 32 publications

(16 citation statements)

References 23 publications

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“…Since 2015, a few reports on the synthesis of FA have been published [26,27,[60][61][62][63][64][65][66][67][68][69][70] , with a larger number of reports published on the synthesis of FS from CO 2 because of the more favorable thermodynamics of formation. The challenge in the synthesis of FA comes from the unfavorable thermodynamics of hydrogenation of the gaseous CO 2 with H 2 (reaction 8) , where G (298 K) = + 32.9 kJ/mol [21,54] .…”

Section: Hcoo H (L)mentioning

confidence: 99%

Challenges and opportunities for using formate to store, transport, and use hydrogen

Grubel

Jeong

Yoon

et al. 2020

Journal of Energy Chemistry

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Section: Hcoo H (L)mentioning

confidence: 99%

Challenges and opportunities for using formate to store, transport, and use hydrogen

Grubel

Jeong

Yoon

et al. 2020

Journal of Energy Chemistry

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“…The CO2 gas can be transformed into fuel with a reductive pathway [13]. Some studies have used direct reduction from CO2 into methanol or methane [9,14].…”

Section: ■ Introductionmentioning

confidence: 99%

Synthesis and Application of Fe3O4/SiO2/TiO2 Nanocomposite as Photocatalyst in CO2 Indirect Reduction to Produce Methanol

2019

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This study focuses on the synthesis and application of a Fe3O4/SiO2/TiO2 nanocomposite as a photocatalyst in CO2 indirect reduction. The synthesis was started by preparation of magnetite (Fe3O4) followed by silica (SiO2) coating and titania (TiO2) deposition. Magnetite was prepared by the sono-coprecipitation method, then the coating of SiO2 and deposition of TiO2 were performed by the sol-gel method under ultrasonic irradiation. All the material products were characterized by an X-ray diffractometer (XRD), Fourier-transform infrared spectrophotometer (FTIR), and transmission electron microscope (TEM). The final material product was also analyzed by a specular reflectance UV-Visible spectrometer (SR-UV-Vis) and the turbidimetry method. The product of the indirect reduction was analyzed by a gas chromatography-mass spectrometer (GC-MS). The XRD diffractograms and FTIR spectra confirmed the presence of Fe3O4, SiO2, and the anatase phase of TiO2. The TEM images revealed the presence of a core-shell nanocomposite with an average diameter of 19.22 ± 1.25 nm. The SR-UV-Vis spectrum was used to determine the band gap energy of the photocatalyst, with the result being 3.22 eV. Turbidimetry aimed to measure the magnetic recoverability of the final material, and the result was that it had better recoverability compared to a non-magnetic photocatalyst composite. The GC chromatogram of the indirect reduction product indicated four major fractions; the MS spectra showed these to be methanol, formaldehyde, formic acid, and CO2. The GC-MS results revealed that CO2 indirect reduction achieved 73.91% conversion of CO2 and 55.01% selective to methanol.

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“…To mitigate the greenhouse effect, there has been increasing interest in converting the greenhouse gas, carbon dioxide (CO 2 ), to useful molecules, such as carbon monoxide (CO) [1,2], methane (CH 4 ) [3,4], formic acid (HCOOH) [5], formaldehyde (HCHO) [6], or methanol (CH 3 OH) [7,8], via chemical routes. On the other hand, because CO 2 is a chemically stable compound owing to its carbon-oxygen double bonds, its conversion to some hydrocarbons requires substantial energy input for bond cleavage [9].…”

Section: Introductionmentioning

confidence: 99%

Effective Carbon Dioxide Photoreduction over Metals (Fe-, Co-, Ni-, and Cu-) Incorporated TiO₂/Basalt Fiber Films

Yeon

Kwak

Park

et al. 2016

International Journal of Photoenergy

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Mineralogical basalt fibers as a complementary adsorbent were introduced to improve the adsorption of CO2over the surfaces of photocatalysts. TiO2photocatalysts (M-TiO2) incorporated with 5.0 mol.% 3d-transition metals (Fe, Co, Ni, and Cu) were prepared using a solvothermal method and mixed with basalt fibers for applications to CO2photoreduction. The resulting 5.0 mol.% M-TiO2powders were characterized by X-ray diffraction, scanning electron microscopy, ultraviolet-visible spectroscopy, photoluminescence, Brunauer, Emmett, and Teller surface area, and CO2-temperature-programmed desorption. A paste composed of two materials was coated and fixed on a Pyrex plate by a thermal treatment. The 5.0 mol.% M-TiO2/basalt fiber films increased the adsorption of CO2significantly, indicating superior photocatalytic behavior compared to pure TiO2and basalt fiber films, and produced 158~360 μmol gcat-1 L−1CH4gases after an 8 h reaction. In particular, the best performance was observed over the 5.0 mol.% Co-TiO2/basalt fiber film. These results were attributed to the effective CO2gas adsorption and inhibition of photogenerated electron-hole pair recombination.

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Production of formic acid from CO2 reduction by means of potassium borohydride at ambient conditions

Cited by 32 publications

References 23 publications

Challenges and opportunities for using formate to store, transport, and use hydrogen

Challenges and opportunities for using formate to store, transport, and use hydrogen

Synthesis and Application of Fe<sub>3</sub>O<sub>4</sub>/SiO<sub>2</sub>/TiO<sub>2</sub> Nanocomposite as Photocatalyst in CO<sub>2</sub> Indirect Reduction to Produce Methanol

Effective Carbon Dioxide Photoreduction over Metals (Fe-, Co-, Ni-, and Cu-) Incorporated TiO₂/Basalt Fiber Films

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Production of formic acid from CO2 reduction by means of potassium borohydride at ambient conditions

Cited by 32 publications

References 23 publications

Challenges and opportunities for using formate to store, transport, and use hydrogen

Challenges and opportunities for using formate to store, transport, and use hydrogen

Synthesis and Application of Fe<sub>3</sub>O<sub>4</sub>/SiO<sub>2</sub>/TiO<sub>2</sub> Nanocomposite as Photocatalyst in CO<sub>2</sub> Indirect Reduction to Produce Methanol

Effective Carbon Dioxide Photoreduction over Metals (Fe-, Co-, Ni-, and Cu-) Incorporated TiO2/Basalt Fiber Films

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Effective Carbon Dioxide Photoreduction over Metals (Fe-, Co-, Ni-, and Cu-) Incorporated TiO₂/Basalt Fiber Films