Decarbonylation and decomposition pathways of alcohol's on Pd(111)

Davis, J. L.; Barteau, Mark A.

doi:10.1016/s0039-6028(87)80064-x

Cited by 253 publications

(203 citation statements)

References 55 publications

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“…In order to understand the mechanism of hydrogen production, the reactivity pattern of alcohol on pure TiO 2 and Pd surfaces were used to gain insights into the catalytic processes. Although most of the decomposition studies were carried out on the Pd model single crystal surfaces in UHV conditions [34][35][36][37][38], we have shown that methanol, ethanol and propanol photocatalytic reaction products mimic the decomposition pattern on the well-defined Pd metal surfaces [21,39]. Studies carried out by Griffin et al on the decomposition of ethylene glycol on Pd showed similar characteristics to methanol decomposition [40].…”

Section: Discussionmentioning

confidence: 59%

Hydrogen generation by photocatalytic reforming of potential biofuels: Polyols, cyclic alcohols, and saccharides

Kennedy

Bahruji

Bowker

et al. 2018

Journal of Photochemistry and Photobiology A: Chemistry

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A B S T R A C TWe have studied hydrogen gas production using photocatalysis from C2-C5 carbon chain polyols, cyclic alcohols and mono and di-saccharides using palladium nanoparticles supported on a TiO 2 catalyst. For many of the polyols the hydrogen evolution rate is found to be dictated by the number of hydroxyl groups and available a-hydrogens in the structure. However the rule only applies to polyols and cyclic alcohols, while the sugar activity is limited by the bulky structure of those molecules. There was also evidence of ring opening in photocatalytic reforming of cyclic alcohols that involved dehydrogenation and decarbonylation of a CÀ ÀC bond.

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Section: Discussionmentioning

confidence: 59%

Hydrogen generation by photocatalytic reforming of potential biofuels: Polyols, cyclic alcohols, and saccharides

Kennedy

Bahruji

Bowker

et al. 2018

Journal of Photochemistry and Photobiology A: Chemistry

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“…However, there are several aspects that gather consensus: (1) hydration of the proton exchange membrane (PEM) leads to proton production in the anode and then begins its transportation through the membrane to the cathode; (2) in the cathode another catalyst is used to combine electrons, protons, and oxygen from the air, resulting in water vapor and carbon dioxide production, while methanol reacts in the anode; and (3) experimental data indicate the methoxy radical (CH 3 O) as the first intermediate in the oxidative process [27][28][29][30][31][32][33][34][35][36][37][38][39]. Therefore, the discussion presented in this section will have in account these aspects and will especially consider the corroboration of existence of methoxy as intermediate in experimental and computational data as a strong indication of pertinent mechanism.…”

Section: Experimental Data and Indiciamentioning

confidence: 99%

Ruthenium–Platinum Catalysts and Direct Methanol Fuel Cells (DMFC): A Review of Theoretical and Experimental Breakthroughs

et al. 2017

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Abstract:The increasing miniaturization of devices creates the need for adequate power sources and direct methanol fuel cells (DMFC) are a strong option in the various possibilities under current development. DMFC catalysts are mostly based on platinum, for its outperformance in three key areas (activity, selectivity and stability) within methanol oxidation framework. However, platinum poisoning with products of methanol oxidation led to the use of alloys. Ruthenium-platinum alloys are preferred catalysts active phases for methanol oxidation from an industrial point of view and, indeed, ruthenium itself is a viable catalyst for this reaction. In addition, the route of methanol decomposition is crucial in the goal of producing H 2 from water reaction with methanol. However, the reaction pathway remains elusive and new approaches, namely in computational methods, have been ensued to determine it. This article reviews the various recent theoretical approaches for determining the pathway of methanol decomposition, and systematizes their validation with experimental data, within methodological context.

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“…minute timescale, over which loss of both hydrogens appears coincident. However, temperature-programmed mass spectrometric [145] and vibrational [146] studies of unsaturated C 1 -C 3 alcohols implicate O-H cleavage and attendant alkoxy formation over Pd single crystal surfaces as the first reaction step [142,147]. It is generally held that the resultant hydrogen adatoms react with dissociatively absorbed oxygen to form water, which immediately desorbs at ambient temperature thereby shifting the equilibrium to carbonyl formation [39,67].…”

Section: Surface Reaction Mechanismmentioning

confidence: 99%

Catalysing Sustainable Fuel and Chemical Synthesis

Lee¹

2015

Advanced Biofuels

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Concerns over the economics of proven fossil fuel reserves, in concert with government and public acceptance of the anthropogenic origin of rising CO 2 emissions and associated climate change from such combustible carbon, are driving academic and commercial research into new sustainable routes to fuel and chemicals. The quest for such sustainable resources to meet the demands of a rapidly rising global population represents one of this century's grand challenges. Here, we discuss catalytic solutions to the clean synthesis of biodiesel, the most readily implemented and low cost, alternative source of transportation fuels, and oxygenated organic molecules for the manufacture of fine and speciality chemicals to meet future societal demands.

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Decarbonylation and decomposition pathways of alcohol's on Pd(111)

Cited by 253 publications

References 55 publications

Hydrogen generation by photocatalytic reforming of potential biofuels: Polyols, cyclic alcohols, and saccharides

Hydrogen generation by photocatalytic reforming of potential biofuels: Polyols, cyclic alcohols, and saccharides

Ruthenium–Platinum Catalysts and Direct Methanol Fuel Cells (DMFC): A Review of Theoretical and Experimental Breakthroughs

Catalysing Sustainable Fuel and Chemical Synthesis

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