Molecular Orientations Change Reaction Kinetics and Mechanism: A Review on Catalytic Alcohol Oxidation in Gas Phase and Liquid Phase on Size-Controlled Pt Nanoparticles
| Autor: | Danylo Zherebetskyy, Hui-Ling Han, Lindsay M. Carl, Hironori Tatsumi, Fudong Liu, András Sápi, Gabor A. Somorjai, Hailiang Wang |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Alcohol
02 engineering and technology 010402 general chemistry lcsh:Chemical technology 01 natural sciences Physical Chemistry Catalysis Reaction rate lcsh:Chemistry chemistry.chemical_compound Alcohol Use and Health Substance Misuse Phase (matter) lcsh:TP1-1185 Physical and Theoretical Chemistry Ethanol catalytic alcohol oxidation liquid phase surface molecular orientation Substance Abuse 021001 nanoscience & nanotechnology 0104 chemical sciences Alcoholism sum-frequency generation spectroscopy chemistry Catalytic oxidation Chemical engineering lcsh:QD1-999 Alcohol oxidation Methanol gas phase 0210 nano-technology density functional theory calculation Pt nanoparticles Physical Chemistry (incl. Structural) |
| Zdroj: | Catalysts, Vol 8, Iss 6, p 226 (2018) Catalysts, vol 8, iss 6 Liu, F; Wang, H; Sapi, A; Tatsumi, H; Zherebetskyy, D; Han, HL; et al.(2018). Molecular orientations change reaction kinetics and mechanism: A review on catalytic alcohol oxidation in gas phase and liquid phase on size-controlled Pt nanoparticles. Catalysts, 8(6), 226-226. doi: 10.3390/catal8060226. Lawrence Berkeley National Laboratory: Retrieved from: http://www.escholarship.org/uc/item/3gs718kb |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal8060226. |
| Popis: | © 2018 by the authors. Licensee MDPI, Basel, Switzerland. Catalytic oxidation of alcohols is an essential process for energy conversion, production of fine chemicals and pharmaceutical intermediates. Although it has been broadly utilized in industry, the basic understanding for catalytic alcohol oxidations at a molecular level, especially under both gas and liquid phases, is still lacking. In this paper, we systematically summarized our work on catalytic alcohol oxidation over size-controlled Pt nanoparticles. The studied alcohols included methanol, ethanol, 1-propanol, 2-propanol, and 2-butanol. The turnover rates of different alcohols on Pt nanoparticles and also the apparent activation energy in gas and liquid phase reactions were compared. The Pt nanoparticle size dependence of reaction rates and product selectivity was also carefully examined. Water showed very distinct effects for gas and liquid phase alcohol oxidations, either as an inhibitor or as a promoter depending on alcohol type and reaction phase. A deep understanding of different alcohol molecular orientations on Pt surface in gas and liquid phase reactions was established using sum-frequency generation spectroscopy analysis for in situ alcohol oxidations, as well as density functional theory calculation. This approach can not only explain the entirely different behaviors of alcohol oxidations in gas and liquid phases, but can also provide guidance for future catalyst/process design. |
| Databáze: | OpenAIRE |
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