High-temperature modification of sibunit for its application as a support for ruthenium catalysts in ammonia synthesis

Борисов, В. А.; Иост, К. Н.; Темерев, В. Л.; Surovikin, Yu. V.; Смороков, А. А.; Fedotova, P. A.; Shlyapin, D. A.

doi:10.1063/1.5122036

Cited by 3 publications

(5 citation statements)

References 22 publications

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“…These results indicate that hydrogenation of the aromatic ring occurs efficiently at low temperatures, which is consistent with thermodynamics . Consistent with the literature results, the activation energy ( E a ) for hydrogenation of the aromatic ring is lower than the E a value for deoxygenation …”

Section: Resultssupporting

confidence: 89%

“…The presence of these peaks can be attributed to larger metal particles not considered or observed in TEM. Peaks at 26° and 42° belong to the carbon support, indicating presence of the microcrystalline structures. , The lack of peaks belonging to Re could be caused by high dispersion of Re particles or an overlap with carbon reflections …”

Section: Resultsmentioning

confidence: 99%

“…63 Consistent with the literature results, the activation energy (E a ) for hydrogenation of the aromatic ring is lower than the E a value for deoxygenation. 47 Deactivation was not observed even after 17 h of time on stream, as conversion and yield remained constant.…”

Section: ■ Introductionmentioning

confidence: 96%

“…Peaks at 26°and 42°belong to the carbon support, indicating presence of the microcrystalline structures. 46,47 The lack of peaks belonging to Re could be caused by high dispersion of Re particles or an overlap with carbon reflections. 48 The lack of Pt peaks in PRC11 shows that the addition of Re improved Pt dispersion.…”

Section: ■ Introductionmentioning

confidence: 99%

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Hydrodeoxygenation of Isoeugenol over Carbon-Supported Pt and Pt–Re Catalysts for Production of Renewable Jet Fuel

et al. 2021

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A series of monometallic platinum and bimetallic platinum−rhenium catalysts supported on mesoporous carbon Sibunit, which is a type of mesoporous, microcrystalline carbon, were investigated for hydrodeoxygenation (HDO) of isoeugenol (IE) at 200−300 °C and 30 bar of H 2 , using dodecane as a solvent. Catalytic activity was tested in a batch reactor to screen the catalysts and, for comparison, also in the continuous mode. For batch experiments, complete conversion, and a high yield of the desired product, propylcyclohexane (PCH), were obtained for all bimetallic PtRe/Sibunit in 240 min, with the highest yield of PCH when Pt:Re ratio was 1:1 or 1:3. The results for Pt−Re (1:1) were reproducible, in terms of catalytic activity and reusability of catalysts, which showed no deactivation. Monometallic Pt catalysts displayed low activity. Continuous experiments were performed with PtRe(1:1)/Sibunit at 30 bar H 2 , 0.5 mL/min of the liquid flow, and temperatures between 75 °C and 200 °C. The distribution of products showed deoxygenation at higher temperatures, while at lower temperatures, mainly oxygenated products were formed. XPS results confirmed the presence of ReOx species, where an increase in the platinum loading resulted in a decrease in the fraction of ReOx species and subsequently lower PCH yield.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 96%

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hydrodeoxygenation of Isoeugenol over Carbon-Supported Pt and Pt–Re Catalysts for Production of Renewable Jet Fuel

et al. 2021

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“…The method to improve the activity of Pt‐based catalyst can not only select non‐carbon support but also graphitized carbon black. It was found that a higher graphitization degree of the support caused better the stability of the support [74] . This is because after the graphitization degree increases, the defect sites of carbon support will be greatly reduced, and the π sites anchoring Pt will also increase, thus enhancing the interaction between Pt−C [75] .…”

Section: Thermochemical Oxidation Of Hmf By Noble Metalsmentioning

confidence: 99%

Research Progress of Highly Efficient Noble Metal Catalysts for the Oxidation of 5‐Hydroxymethylfurfural

et al. 2022

ChemSusChem

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The influence of high-temperature treatment of the carbon support Sibunit and the content of ruthenium on the activity of Ru-Cs/C catalysts for ammonia synthesis

Борисов

Fedotova

Иост

et al. 2020

International Conference on Science and Applied Science (Icsas2020)

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High-temperature modification of sibunit for its application as a support for ruthenium catalysts in ammonia synthesis

Cited by 3 publications

References 22 publications

Hydrodeoxygenation of Isoeugenol over Carbon-Supported Pt and Pt–Re Catalysts for Production of Renewable Jet Fuel

Hydrodeoxygenation of Isoeugenol over Carbon-Supported Pt and Pt–Re Catalysts for Production of Renewable Jet Fuel

Research Progress of Highly Efficient Noble Metal Catalysts for the Oxidation of 5‐Hydroxymethylfurfural

The influence of high-temperature treatment of the carbon support Sibunit and the content of ruthenium on the activity of Ru-Cs/C catalysts for ammonia synthesis

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