Here, we report a “critical distance” method for the synthesis of 9 kinds of sub-5 nm rhodium (Rh)-based intermetallic catalysts. Enlarging the distance between intermetallic particles on high-surface-area carbon black supports could significantly suppress the metal sintering in high-temperature annealing. The prepared Rh₂Sn intermetallic catalysts exhibited enhanced activity in catalyzing the hydrogenation of nitrobenzene.

中文翻译：

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大比表面积炭黑载体上增大颗粒间距离合成铑金属间化合物催化剂

在这里，我们报告了一种用于合成 9 种亚 5 nm 铑 (Rh) 基金属间化合物催化剂的“临界距离”方法。扩大高表面积炭黑载体上金属间化合物颗粒之间的距离可以显着抑制高温退火过程中的金属烧结。制备的Rh ₂ Sn金属间化合物催化剂在催化硝基苯加氢方面表现出增强的活性。