{"title":"由氧化钨（VI）和钌组成的纳米催化剂的合成与表征，可用于通过水解甲胺硼烷制氢","authors":"","doi":"10.1016/j.matchemphys.2024.129944","DOIUrl":null,"url":null,"abstract":"<div><p>The demand for effective and safe chemical storage systems as an alternative energy carrier is unabated. This study reports the analysis of methylamine-borane (MeAB) as a new, efficient, and widely applicable technological storage material for mobile applications. Here, we report the preparation of tungsten (VI) oxide (WO<sub>3</sub>) supported ruthenium (Ru) nanoparticles (Ru/WO<sub>3</sub>) by impregnation-reduction method and their use as a nanocatalyst in the hydrolysis of MeAB for hydrogen (H<sub>2</sub>) production. Ru/WO<sub>3</sub> nanocatalyst was characterized by a combination of advanced analytical tools such as XRD, XPS, TEM, TEM-EDX, SEM, and SEM-EDX. Ru/WO<sub>3</sub> nanocatalyst, with an average particle size of 2.16 ± 0.23 nm obtained from TEM analysis, produces H<sub>2</sub> at 298 K with an initial turnover frequency (TOF<sub><em>initial</em></sub>) value of 43.57 min<sup>−1</sup> in complete conversion in the hydrolysis of MeAB. In addition, the activation energy (<em>E</em><sub><em>a</em></sub><sup>#</sup>), activation enthalpy (<em>ΔH</em><sup><em>#</em></sup>) and activation entropy (<em>ΔS</em><sup><em>#</em></sup>) values of the Ru/WO<sub>3</sub> nanocatalyst were calculated as in MeAB hydrolysis are 51.54 kJ/mol, 3.7 kJ/mol and 184.57 J/mol × K, respectively, from the Arrhenius and Eyring-Polanyi equations. It was concluded that both the calculated TOF<sub><em>initial</em></sub> value and activation parameters were quite valuable compared to previous catalysts used for MeAB hydrolysis.</p></div>","PeriodicalId":18227,"journal":{"name":"Materials Chemistry and Physics","volume":null,"pages":null},"PeriodicalIF":4.3000,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis and characterization of a nanocatalyst consisting of tungsten (VI) oxide and ruthenium for potential use in the hydrogen generation via hydrolysis of methylamine-borane\",\"authors\":\"\",\"doi\":\"10.1016/j.matchemphys.2024.129944\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The demand for effective and safe chemical storage systems as an alternative energy carrier is unabated. This study reports the analysis of methylamine-borane (MeAB) as a new, efficient, and widely applicable technological storage material for mobile applications. Here, we report the preparation of tungsten (VI) oxide (WO<sub>3</sub>) supported ruthenium (Ru) nanoparticles (Ru/WO<sub>3</sub>) by impregnation-reduction method and their use as a nanocatalyst in the hydrolysis of MeAB for hydrogen (H<sub>2</sub>) production. Ru/WO<sub>3</sub> nanocatalyst was characterized by a combination of advanced analytical tools such as XRD, XPS, TEM, TEM-EDX, SEM, and SEM-EDX. Ru/WO<sub>3</sub> nanocatalyst, with an average particle size of 2.16 ± 0.23 nm obtained from TEM analysis, produces H<sub>2</sub> at 298 K with an initial turnover frequency (TOF<sub><em>initial</em></sub>) value of 43.57 min<sup>−1</sup> in complete conversion in the hydrolysis of MeAB. In addition, the activation energy (<em>E</em><sub><em>a</em></sub><sup>#</sup>), activation enthalpy (<em>ΔH</em><sup><em>#</em></sup>) and activation entropy (<em>ΔS</em><sup><em>#</em></sup>) values of the Ru/WO<sub>3</sub> nanocatalyst were calculated as in MeAB hydrolysis are 51.54 kJ/mol, 3.7 kJ/mol and 184.57 J/mol × K, respectively, from the Arrhenius and Eyring-Polanyi equations. It was concluded that both the calculated TOF<sub><em>initial</em></sub> value and activation parameters were quite valuable compared to previous catalysts used for MeAB hydrolysis.</p></div>\",\"PeriodicalId\":18227,\"journal\":{\"name\":\"Materials Chemistry and Physics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":4.3000,\"publicationDate\":\"2024-09-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Chemistry and Physics\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0254058424010721\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Chemistry and Physics","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0254058424010721","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Synthesis and characterization of a nanocatalyst consisting of tungsten (VI) oxide and ruthenium for potential use in the hydrogen generation via hydrolysis of methylamine-borane
The demand for effective and safe chemical storage systems as an alternative energy carrier is unabated. This study reports the analysis of methylamine-borane (MeAB) as a new, efficient, and widely applicable technological storage material for mobile applications. Here, we report the preparation of tungsten (VI) oxide (WO3) supported ruthenium (Ru) nanoparticles (Ru/WO3) by impregnation-reduction method and their use as a nanocatalyst in the hydrolysis of MeAB for hydrogen (H2) production. Ru/WO3 nanocatalyst was characterized by a combination of advanced analytical tools such as XRD, XPS, TEM, TEM-EDX, SEM, and SEM-EDX. Ru/WO3 nanocatalyst, with an average particle size of 2.16 ± 0.23 nm obtained from TEM analysis, produces H2 at 298 K with an initial turnover frequency (TOFinitial) value of 43.57 min−1 in complete conversion in the hydrolysis of MeAB. In addition, the activation energy (Ea#), activation enthalpy (ΔH#) and activation entropy (ΔS#) values of the Ru/WO3 nanocatalyst were calculated as in MeAB hydrolysis are 51.54 kJ/mol, 3.7 kJ/mol and 184.57 J/mol × K, respectively, from the Arrhenius and Eyring-Polanyi equations. It was concluded that both the calculated TOFinitial value and activation parameters were quite valuable compared to previous catalysts used for MeAB hydrolysis.
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Materials Chemistry and Physics is devoted to short communications, full-length research papers and feature articles on interrelationships among structure, properties, processing and performance of materials. The Editors welcome manuscripts on thin films, surface and interface science, materials degradation and reliability, metallurgy, semiconductors and optoelectronic materials, fine ceramics, magnetics, superconductors, specialty polymers, nano-materials and composite materials.
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