当前位置：
X-MOL 学术
›
Catal. Sci. Technol.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Rh–M (M: Co, Cu, and Fe) nanoclusters as highly efficient and durable catalysts for the methanolysis of ammonia borane
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-09-14 , DOI: 10.1039/d0cy01422b Bayram Abay 1, 2, 3, 4 , Murat Rakap 2, 3, 4, 5
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-09-14 , DOI: 10.1039/d0cy01422b Bayram Abay 1, 2, 3, 4 , Murat Rakap 2, 3, 4, 5
Affiliation
|
Herein, we report the preparation, characterization, and employment of hydroxyapatite-supported rhodium-based Rh–M (RhCo, RhCu, and RhFe) nanoclusters as cost-effective, highly efficient and reusable catalysts for hydrogen evolution from ammonia borane methanolysis. Rh–M@HA nanoclusters are formed by in situ reduction of hydroxyapatite-supported related metal cations during ammonia borane methanolysis after ion-exchange. The Rh–M@HA nanoclusters are easily obtained as very stable solids and identified by some advanced analytical techniques like ICP-OES, BET, TEM, XPS, and XRD. After experimental studies, they are found as highly isolable, redispersible, and reusable nanocatalysts to evolve hydrogen from ammonia borane methanolysis under mild conditions. From these three catalysts, the Rh51Co49@HA nanoclusters provide the highest turnover frequency (TOF) value of 193.7 min−1 while the Rh26Cu74@HA and Rh45Fe55@HA nanoclusters have TOF values of 25.1 and 38.7 min−1, respectively, in ammonia borane methanolysis at 25 ± 0.1 °C. The apparent activation energies (Ea) of the Rh51Co49@HA, Rh26Cu74@HA, and Rh45Fe55@HA nanoclusters for the same reaction are calculated to be 52.7, 59.7, and 54.1 kJ mol−1, respectively.
中文翻译：
Rh–M（M：Co，Cu和Fe）纳米团簇是氨硼烷甲醇分解的高效耐用催化剂
在本文中，我们报告了羟基磷灰石负载的铑基Rh–M（RhCo，RhCu和RhFe）纳米团簇的制备，表征和使用，它们是经济高效，可重复使用的氨硼烷甲醇分解制氢催化剂。Rh-M @ HA纳米簇是通过在离子交换后的氨硼烷甲醇分解过程中原位还原羟基磷灰石负载的相关金属阳离子而形成的。Rh-M @ HA纳米团簇很容易以非常稳定的固体形式获得，并通过一些先进的分析技术如ICP-OES，BET，TEM，XPS和XRD进行鉴定。经过实验研究，发现它们是高度可分离，可再分散和可重复使用的纳米催化剂，可在温和条件下从氨硼烷甲醇分解中释放出氢。从这三种催化剂中，Rh 51Co 49 @HA纳米团簇的最高周转率（TOF）值为193.7 min -1，而Rh 26 Cu 74 @HA和Rh 45 Fe 55 @HA纳米团簇的TOF值分别为25.1和38.7 min -1。甲硼烷在25±0.1°C下进行甲醇分解。对于同一反应，Rh 51 Co 49 @ HA，Rh 26 Cu 74 @HA和Rh 45 Fe 55 @HA纳米簇的表观活化能（E a）计算为52.7、59.7和54.1 kJ mol -1， 分别。
更新日期：2020-09-16
中文翻译：
Rh–M（M：Co，Cu和Fe）纳米团簇是氨硼烷甲醇分解的高效耐用催化剂
在本文中，我们报告了羟基磷灰石负载的铑基Rh–M（RhCo，RhCu和RhFe）纳米团簇的制备，表征和使用，它们是经济高效，可重复使用的氨硼烷甲醇分解制氢催化剂。Rh-M @ HA纳米簇是通过在离子交换后的氨硼烷甲醇分解过程中原位还原羟基磷灰石负载的相关金属阳离子而形成的。Rh-M @ HA纳米团簇很容易以非常稳定的固体形式获得，并通过一些先进的分析技术如ICP-OES，BET，TEM，XPS和XRD进行鉴定。经过实验研究，发现它们是高度可分离，可再分散和可重复使用的纳米催化剂，可在温和条件下从氨硼烷甲醇分解中释放出氢。从这三种催化剂中，Rh 51Co 49 @HA纳米团簇的最高周转率（TOF）值为193.7 min -1，而Rh 26 Cu 74 @HA和Rh 45 Fe 55 @HA纳米团簇的TOF值分别为25.1和38.7 min -1。甲硼烷在25±0.1°C下进行甲醇分解。对于同一反应，Rh 51 Co 49 @ HA，Rh 26 Cu 74 @HA和Rh 45 Fe 55 @HA纳米簇的表观活化能（E a）计算为52.7、59.7和54.1 kJ mol -1， 分别。
京公网安备 11010802027423号