Products and intermediates in propane hydrogenolysis on supported Pt

Sermon, Paul A.; Keryou, K.; Ahmed, Faiz

doi:10.1039/b006035f

Cited by 7 publications

(5 citation statements)

References 67 publications

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“…Thus, this catalyst system (KCC-1/Ru) exhibited good activity and stability compared with other known catalysts. − To probe the advantages of fibrous nature of KCC-1 as a support, we prepared this catalyst system using SBA-15 and MCM-41 as support with comparable Ru loading using similar synthesis procedure (Supporting Information, Figures S3 and S4) and then tested for propane hydrogenolysis under identical reaction conditions (Supporting Information, Figures S5 and S6). Table clearly indicates the superiority of the KCC-1/Ru catalyst over SBA-15/Ru and MCM-41/Ru in terms of elevated catalyst activity and high TON.…”

Section: Resultsmentioning

confidence: 99%

“…In this regard, the hydrogenolysis of hydrocarbons, which is the cleavage of C–C bonds under hydrogen, is in increasing demand in petroleum processing. Hydrogenolysis is a major subset of reactions that occurs on supported transition-metal catalysts, which were first studied for ethane by Morikawa, Benedict, and Taylor. − John Sinfelt’s research on hydrogenolysis had a tremendous impact on industrial catalysis systems for hydrogenolysis. − Metal-based catalysts including ruthenium-based have been extensively studied by Bond and others for the hydrogenolysis of alkanes and are some of the best catalysts for this reaction. − …”

Section: Introductionmentioning

confidence: 99%

“…Although a range of catalysts exists for the hydrogenolysis of alkanes, − two main challenges remain unresolved: (1) the stable nanocatalyst system that do not experience activity loss as the result of particle-size growth during the reaction because of Ostwald ripening and (2) nanocatalysts that are active at low temperatures and at atmospheric pressure and are also effective even for challenging substrates such as ethane.…”

Section: Introductionmentioning

confidence: 99%

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Fibrous Nano-Silica Supported Ruthenium (KCC-1/Ru): A Sustainable Catalyst for the Hydrogenolysis of Alkanes with Good Catalytic Activity and Lifetime

et al. 2012

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We have shown that fibrous nanosilica (KCC-1) can serve as a suitable support for the synthesis of highly dispersed ruthenium (Ru) nanoparticles. The resulting KCC-1/Ru catalyst displayed superior activity for the hydrogenolysis of propane and ethane at atmospheric pressure and at low temperature. The high catalytic activity was due to the formation of Ru-nanoparticles with an active size range (1−4 nm) and the presence of hexagonal-shaped particles with several corners and sharp edges possessing reactive atoms with lowest coordination numbers. The catalyst was stable with an excellent lifetime and no sign of deactivation, even after eight days. This enhanced stability may be due to the fibrous nature of KCC-1 which restricts Ostwald ripening of Ru nanoparticles.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fibrous Nano-Silica Supported Ruthenium (KCC-1/Ru): A Sustainable Catalyst for the Hydrogenolysis of Alkanes with Good Catalytic Activity and Lifetime

et al. 2012

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“…Sermon et al [27] reported that at higher temperatures (≥317 • C), platinum-catalysed hydrogenolysis of propane proceeded via multiple C-C bond cleavage mechanism to yield methane as the dominant product. This supports the predominance of Reaction Equation (R6) over (R7) in this work.…”

Section: Effect Of Hydrogen Atmosphere At Different Temperaturesmentioning

confidence: 99%

Optimisation of Propane Production from Hydrothermal Decarboxylation of Butyric Acid Using Pt/C Catalyst: Influence of Gaseous Reaction Atmospheres

Onwudili

Razaq

Simons³

2021

Energies

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The displacement and eventual replacement of fossil-derived fuel gases with biomass-derived alternatives can help the energy sector to achieve net zero by 2050. Decarboxylation of butyric acid, which can be obtained from biomass, can produce high yields of propane, a component of liquefied petroleum gases. The use of different gaseous reaction atmospheres of nitrogen, hydrogen, and compressed air during the catalytic hydrothermal conversion of butyric acid to propane have been investigated in a batch reactor within a temperature range of 200–350 °C. The experimental results were statistically evaluated to find the optimum conditions to produce propane via decarboxylation while minimizing other potential side reactions. The results revealed that nitrogen gas was the most appropriate atmosphere to control propane production under the test conditions between 250 °C and 300 °C, during which the highest hydrocarbon selectivity for propane of up to 97% was achieved. Below this temperature range, butyric acid conversion remained low under the three reaction atmospheres. Above 300 °C, competing reactions became more significant. Under compressed air atmosphere, oxidation to CO2 became dominant, and under nitrogen, thermal cracking of propane became significant, producing both ethane and methane as side products. Interestingly, under a hydrogen atmosphere, hydrogenolytic cracking propane became dominant, leading to multiple C–C bond cleavages to produce methane as the main side product at 350 °C.

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“…66 The reactions were in a continuous-flow Pyrex microreactor using propane-H 2 mixture in the ratio of 1 : 10 with a total flow of 130 ml/min. TEM analyses revealed that the average particle size of Pt particles in Pt-SiO 2 was from 1.88 to 2.00 nm.…”

Section: + +mentioning

confidence: 99%