Herein, we first describe the physical mixture of Cu(OH)₂/Fe(OH)₃ as a composite catalyst precursor for the dehydrogenation of ammonia borane (AB) in methanol. During the initial period of catalytic reaction, Cu nanoparticles were formed in-situ. The catalytic activity of Cu nanoparticles can be significantly enhanced with the assistance of Fe species and OH⁻. A maximum turnover frequency (TOF) of 50.3 mol_H2 mol_{total metal}⁻¹ min⁻¹ (135.6 mol_H2 mol_Cu⁻¹ min⁻¹) was achieved at ambient temperature, which is superior to those of previously reported Fe or Cu based systems.

中文翻译：

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Fe(OH)3 负载的 Cu(OH)2 作为氨-硼烷脱氢的协同高效体系

_{在此，我们首先描述了 Cu(OH) 2} /Fe(OH) ₃的物理混合物作为氨硼烷 (AB) 在甲醇中脱氢的复合催化剂前体。在催化反应的初始阶段，原位形成了 Cu 纳米粒子。^{在 Fe 物种和 OH -}的帮助下，Cu 纳米粒子的催化活性可以显着增强。最大周转频率 (TOF) 为 50.3 mol _{H 2}  mol_总金属⁻¹  min ⁻¹ (135.6 mol _{H 2}  mol _Cu ⁻¹  min ⁻¹) 是在环境温度下实现的，优于先前报道的基于铁或铜的系统。