Formic Acid as a Hydrogen Donor for Catalytic Transformations of Tar

Чесноков, В. В.; Дик, П. П.; Chichkan, A. S.

doi:10.3390/en13174515

Cited by 12 publications

(8 citation statements)

References 32 publications

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“…Therefore, formic acid is an excellent source of hydrogen in the processes of hydrogenation and hydrocracking of high molecular weight hydrocarbons, which is observed in catalytic experiments. 14…”

Section: Discussionmentioning

confidence: 99%

“…9–13 It was proposed to use formic acid as a source of hydrogen for the conversion of tar into gasoline fractions. 14…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11][12][13] It was proposed to use formic acid as a source of hydrogen for the conversion of tar into gasoline fractions. 14 An effective method for studying formic acid is vibrational spectroscopy, 15,16 including combinations with quantum chemical calculations. [17][18][19][20][21] It is now strictly established that the formic acid monomer exists in cis-and trans-configurations.…”

Section: Introductionmentioning

confidence: 99%

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State of Formic Acid Dissolved in Tar According to Infrared Spectroscopy

2022

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Formic acid is considered as a promising hydrogen carrier and can be used as a source of hydrogen in the processing of heavy oil fractions such as tar. The interaction of formic acid with tar was studied by infrared Fourier transform spectroscopy via special technique using a mirror substrate. The infrared (IR) spectra were interpreted considering density functional theory (DFT) calculations. It was shown that formic acid dissolved in tar in three forms, as dimers, monomers of cis- and trans-configurations, hydrogen-bonded to the aromatic rings of the tar compounds, and as free-rotating gas molecules (microbubbles in the tar bulk). The research performed provides an opportunity and methodological base for studying the process of tar conversion in the presence of formic acid into gasoline fractions at temperatures up to 300 oC.

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Section: Discussionmentioning

confidence: 99%

“…9–13 It was proposed to use formic acid as a source of hydrogen for the conversion of tar into gasoline fractions. 14…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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State of Formic Acid Dissolved in Tar According to Infrared Spectroscopy

2022

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“…In the experiments, vacuum residue from the Omsk Refinery was used. Its elemental and fractional compositions are presented in [16]. The sulfur content was 1.5 wt %.…”

Section: Methodsmentioning

confidence: 99%

Effect of High-Temperature Treatment on the Properties of Carbon Nanotube-Based Petroleum Coke Composite

2021

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The study involved a series of experiments on the coking of vacuum residue (VR) and of a mixture of carbon nanotubes (CNTs) and VR in an autoclave at 400-550°C. Using XRD, TEM, and electrical resistivity measurements, the properties of petroleum coke (petcoke) and CNT/petcoke composite were investigated and compared with those after calcination in an inert atmosphere at 1000-1100°C. It was found that the coking of a 2.5% CNT/VR mixture reinforces the petcoke with the CNTs. The CNT/petcoke composite exhibits a slightly higher crystallinity than the petcoke. However, the resistivity of the CNT/petcoke composite was found to be more than an order of magnitude lower than that of the petcoke. After high-temperature (1000-1100°C) calcination, the difference in resistivity between the petcoke and the 2.5% CNT/petcoke composite becomes substantially lower. This is associated with a resistivity drop in the petcoke itself, which approximates the resistivity of the carbon nanotubes. It was also identified that the high-temperature calcination reduces the sulfur content in the CNT/petcoke composite, and this reduction is more dramatic than that for the petroleum coke.

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“…Formic acid could be used also as a donor of hydrogen instead of molecular hydrogen to hydrogenate different organic substances for production of fuels and intermediates for fuels [4,10]. Thus, it could be applied for synthesis of γ-valerolactone from C6 sugars and levulinic acid [11], 2,5-dimethylfuran from 5-formyloxymethylfurfural [12], furfuryl alcohol [13] and methylfuran [14] from furfural, upgraded bio-oil from bio-oil [15], and diesel/gasoline mixtures from tar [16] (Figure 1). Supported catalysts with nanoparticles are traditional catalysts for the hydrogen production from formic acid in gas and liquid phase.…”

Section: Introductionmentioning

confidence: 99%

Progress in Catalytic Hydrogen Production from Formic Acid over Supported Metal Complexes

Bulushev

2021

Energies

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Formic acid is a liquid organic hydrogen carrier giving hydrogen on demand using catalysts. Metal complexes are known to be used as efficient catalysts for the hydrogen production from formic acid decomposition. Their performance could be better than those of supported catalysts with metal nanoparticles. However, difficulties to separate metal complexes from the reaction mixture limit their industrial applications. This problem can be resolved by supporting metal complexes on the surface of different supports, which may additionally provide some surface sites for the formic acid activation. The review analyzes the literature on the application of supported metal complexes in the hydrogen production from formic acid. It shows that the catalytic activity of some stable Ru and Ir supported metal complexes may exceed the activity of homogeneous metal complexes used for deposition. Non-noble metal-based complexes containing Fe demonstrated sufficiently high performance in the reaction; however, they can be poisoned by water present in formic acid. The proposed review could be useful for development of novel catalysts for the hydrogen production.

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Formic Acid as a Hydrogen Donor for Catalytic Transformations of Tar

Cited by 12 publications

References 32 publications

State of Formic Acid Dissolved in Tar According to Infrared Spectroscopy

State of Formic Acid Dissolved in Tar According to Infrared Spectroscopy

Effect of High-Temperature Treatment on the Properties of Carbon Nanotube-Based Petroleum Coke Composite

Progress in Catalytic Hydrogen Production from Formic Acid over Supported Metal Complexes

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