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Ultrahigh Catalytic Activity of l‐Proline‐Functionalized Rh Nanoparticles for Methanolysis of Ammonia Borane
ChemSusChem ( IF 7.5 ) Pub Date : 2018-11-28 , DOI: 10.1002/cssc.201802157 Wenxiu Luo 1 , Wei Cheng 1 , Min Hu 1 , Qi Wang 1 , Xia Cheng 1 , Yun Zhang 1 , Yi Wang 1 , Daojiang Gao 1 , Jian Bi 1 , Guangyin Fan 1
ChemSusChem ( IF 7.5 ) Pub Date : 2018-11-28 , DOI: 10.1002/cssc.201802157 Wenxiu Luo 1 , Wei Cheng 1 , Min Hu 1 , Qi Wang 1 , Xia Cheng 1 , Yun Zhang 1 , Yi Wang 1 , Daojiang Gao 1 , Jian Bi 1 , Guangyin Fan 1
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The synthesis of ultrafine and well‐distributed rhodium nanoparticles (NPs) with high efficiency toward methanolysis of ammonia borane (AB) is crucially important but challenging. A facile approach has been developed for synthesizing ultrafine and uniform Rh NPs deposited on carbon by using the small soluble organic molecule (SOM) of l‐proline (PRO) as capping agent (Rh‐PRO/C). The enrichment of N,O‐coordination sites for the metal precursor by using PRO was found to be the key to the synthesis Rh‐PRO/C. The as‐prepared Rh‐PRO/C showed high catalytic activity for ammonia borane methanolysis with the highest total turnover frequency (TOF) of 1035 mol
(molRh min)−1 under basic conditions, which was three times higher than that of the state‐of‐the‐art Rh‐based catalysts. The excellent catalytic performance of Rh‐PRO/C was ascribed to the well‐dispersed Rh NPs and the PRO‐functionalized metal surface, which can provide more active sites for the reaction. The merit of size‐controlled synthesis combined with metal NP surface modification by SOMs is likely to be beneficial in various catalytic fields.
中文翻译：
l-脯氨酸官能化的Rh纳米粒子对氨硼烷甲醇分解的超高催化活性
高效合成超细且分布均匀的铑纳米颗粒（NPs）对氨硼烷（AB）的甲醇分解至关重要，但具有挑战性。一种简便的方法已被开发用于合成超细，均匀的Rh的NP，通过使用小的水溶性有机分子（SOM）沉积在碳升-脯氨酸（PRO）作为封端剂（Rh的PRO / C）。发现通过使用PRO富集金属前驱体的N，O-配位位点是合成Rh-PRO / C的关键。所制备的Rh-PRO / C对氨硼烷甲醇分解显示出高催化活性，最高总周转频率（TOF）为1035 mol（mol Rh min）-1在基本条件下，是最先进的Rh基催化剂的三倍。Rh-PRO / C的出色催化性能归因于分散良好的Rh NP和PRO-官能化的金属表面，它们可以为反应提供更多的活性位点。尺寸控制合成与SOM对金属NP表面修饰相结合的优点可能在各种催化领域中都是有益的。
更新日期：2018-11-28
(molRh min)−1 under basic conditions, which was three times higher than that of the state‐of‐the‐art Rh‐based catalysts. The excellent catalytic performance of Rh‐PRO/C was ascribed to the well‐dispersed Rh NPs and the PRO‐functionalized metal surface, which can provide more active sites for the reaction. The merit of size‐controlled synthesis combined with metal NP surface modification by SOMs is likely to be beneficial in various catalytic fields.
中文翻译：
l-脯氨酸官能化的Rh纳米粒子对氨硼烷甲醇分解的超高催化活性
高效合成超细且分布均匀的铑纳米颗粒（NPs）对氨硼烷（AB）的甲醇分解至关重要，但具有挑战性。一种简便的方法已被开发用于合成超细，均匀的Rh的NP，通过使用小的水溶性有机分子（SOM）沉积在碳升-脯氨酸（PRO）作为封端剂（Rh的PRO / C）。发现通过使用PRO富集金属前驱体的N，O-配位位点是合成Rh-PRO / C的关键。所制备的Rh-PRO / C对氨硼烷甲醇分解显示出高催化活性，最高总周转频率（TOF）为1035 mol
（mol Rh min）-1在基本条件下，是最先进的Rh基催化剂的三倍。Rh-PRO / C的出色催化性能归因于分散良好的Rh NP和PRO-官能化的金属表面，它们可以为反应提供更多的活性位点。尺寸控制合成与SOM对金属NP表面修饰相结合的优点可能在各种催化领域中都是有益的。
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