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首页> 外文期刊>Advanced Functional Materials >Organically Doped Metals-A New Approach to Metal Catalysis: Enhanced Ag-Catalyzed Oxidation of Methanol
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Organically Doped Metals-A New Approach to Metal Catalysis: Enhanced Ag-Catalyzed Oxidation of Methanol

机译：有机掺杂金属-金属催化的新方法：增强的Ag催化的甲醇氧化

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摘要

We report here a new approach for the modification of the performance of metal catalysts: organic doping of the metal. Specifically, we report that the doping of Ag with Congo Red (CR@Ag) significantly improves the performance of Ag as a catalyst for methanol oxidation to formaldehyde, outperforming both pure Ag and CR-coated Ag (CR/Ag) in terms of lowering the temperature needed for maximal conversion by 100℃, lowering the temperature by 200℃ to reach the maximal selectivity (aldehyde formation), and increasing the maximal space velocity by a factor of two. We were led to this discovery by a detailed investigation of the thermal behavior (thermogravimetric and differential thermal analysis and mass spectroscopy) of CR@Ag under an oxidative atmosphere, which has indicated that the metal is strongly catalyzing the CR oxidation, and which pointed to the relevant temperature for activation of the catalyst.
机译：我们在这里报告了一种改变金属催化剂性能的新方法：金属的有机掺杂。具体而言，我们报告说，用刚果红（CR @ Ag）掺杂Ag可以显着提高Ag作为甲醇氧化为甲醛的催化剂的性能，在降低含量方面优于纯Ag和涂有CR的Ag（CR / Ag）最大转化所需的温度为100℃，降低温度200℃以达到最大选择性（醛形成），最大空速提高两倍。通过详细研究CR @ Ag在氧化气氛下的热行为（热重分析和差示热分析和质谱），我们发现了这种金属，该金属强烈催化CR氧化，并指出了这一点。催化剂活化的相关温度。

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