Energy‐Related Catalysis: Sections 3.12.5 – 3.19.8

Sie, S.T.; Maxwell, Judith; Minderhoud, J.K.; Stork, Wolfgang; Veen, J.A.R. van; Weitkamp, Jens; Traa, Yvonne; O’Connor, C.T.; Heinemann, H.; Whitehurst, D.D.; Gorbaty, Martin L.; Vielstich, W.; Iwasita, T.; Pichat, Pierre

doi:10.1002/9783527619474.ch14c

Cited by 3 publications

(2 citation statements)

References 391 publications

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“…26 The mechanism of the HOR on Pt surface is typically treated as a combination of two out of three elementary steps: Tafel-Volmer or Heyrovsky-Volmer, including the dissociative adsorption of H 2 , dissociative ionization of H 2 and oxidative desorption of adsorbed H (H ad ). 27,28 Tafel step (dissociative adsorption):…”

Section: Evaluation the Relationship Between The Hor Kinetics Andmentioning

confidence: 99%

Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt−H_adEnergetics in Alkaline Electrolyte

Kuttiyiel

Sasaki

et al. 2018

J. Electrochem. Soc.

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The understanding of the sluggish hydrogen oxidation reaction (HOR) kinetics in alkaline electrolyte is crucial for designing high performance electrocatalysts. Here, we report a clear and convincing result on this problem by investigating the relationship between the HOR kinetics and Pt-adsorbate energetics. Using electrochemical analysis for well-modified Pt surfaces with distinct Pt-adsorbate interactions, we establish a clear trend in activity for HOR in alkaline electrolyte, that is, the activity changes in the order Au@Pt < Pt < Pd@Pt < Ru@Pt. A decisive role of Pt−H ad energetics in the HOR kinetics on Pt surfaces is determined, while no favorable effects of Pt−OH ad energetics in the HOR kinetics were found. The nature of strong Pt−H ad interaction for Pt/C catalyst in alkaline electrolyte is revealed by in-situ X-ray absorption near-edge structure (XANES) analysis. These insights play an important role for better understanding the mechanism and structure sensitivity for Pt catalyzed hydrogen oxidation reactions.

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Section: Evaluation the Relationship Between The Hor Kinetics Andmentioning

confidence: 99%

Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt−H_adEnergetics in Alkaline Electrolyte

Kuttiyiel

Sasaki

et al. 2018

J. Electrochem. Soc.

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“…These hydrocarbons could be a proper source for production of aromatics, mainly BTX (benzene, toluene, xylenes), which are among the most important building blocks for a wide variety of petrochemicals and polymers. Along with several investigations which have been performed on this topic, a number of commercial processes have been developed so far for conversion of light alkanes, especially propane and butanes, to the aromatics. The M‐2 Forming process developed by Mobil, Cyclar process by BP and UOP jointly, Aroforming by IFP and SALUTEC, and Z‐Forming Process by Mitsubishi can be named as the most attractive ones .…”

Section: Introductionmentioning

confidence: 99%

Experimental and modelling study of propane aromatization over H‐ZSM‐5 catalysts prepared by different silica sources

Baradaran

Sohrabi

Bijani³

et al. 2015

Can J Chem Eng

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The catalytic performance of H‐ZSM‐5 samples prepared from different silica sources, namely, Ludox (sample A), waterglass (sample B) and tetraethyl orthosilicate (sample C) in aromatization of propane was studied. The catalysts were characterized by BET, SEM, XRD and NH3‐TPD techniques to analyze the structure and acidity of the active sites. The performance tests were carried out in fixed‐bed reactor at 550 °C. For a quantitative assessment, the long‐term propane conversion data were fitted with a second order kinetics for the main reaction and a second order independent kinetics for deactivation using integral method of analysis. Fair fits were observed. According to silica source, the order for activity and stability were A>B>C and B>C>A, respectively. The incorporation of Zn (0.4 wt. %) as a promoter showed beneficial effect on aromatic selectivity at the expense of propane conversion and catalyst stability. The introduction of Zn decreased the rate constant of aromatization from 9.4 to 8.7 m6·kg−1·mol−1·h−1 at 550 °C, while the rate constant of deactivation increased by a factor of five, that is, from 0.0056 to 0.025 h−1.

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Hydrogen evolution electrocatalysis with binary-nonmetal transition metal compounds

et al. 2017

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Energy‐Related Catalysis: Sections 3.12.5 – 3.19.8

Cited by 3 publications

References 391 publications

Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt−H_adEnergetics in Alkaline Electrolyte

Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt−H_adEnergetics in Alkaline Electrolyte

Experimental and modelling study of propane aromatization over H‐ZSM‐5 catalysts prepared by different silica sources

Hydrogen evolution electrocatalysis with binary-nonmetal transition metal compounds

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Energy‐Related Catalysis: Sections 3.12.5 – 3.19.8

Cited by 3 publications

References 391 publications

Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt−HadEnergetics in Alkaline Electrolyte

Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt−HadEnergetics in Alkaline Electrolyte

Experimental and modelling study of propane aromatization over H‐ZSM‐5 catalysts prepared by different silica sources

Hydrogen evolution electrocatalysis with binary-nonmetal transition metal compounds

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Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt−H_adEnergetics in Alkaline Electrolyte

Determination of Hydrogen Oxidation Reaction Mechanism Based on Pt−H_adEnergetics in Alkaline Electrolyte