The feasibility of continuous synthesis of benzylamine from benzyl alcohol by tandem dehydrogenation/amination/reduction has been demonstrated over Cu/SiO₂ and Au/TiO₂. Both catalysts exhibited an equivalent metal particle size range (1-6 nm) and mean (3.1-3.2 nm, from STEM). Hydrogen chemisorption measurements revealed (five-fold) higher uptake on Au/TiO₂ than Cu/SiO₂ under reaction conditions. Reductive amination of benzaldehyde over Cu/SiO₂ generated a 99% yield of dibenzylamine with no detectable benzylamine. Reaction of benzyl alcohol with NH₃ (in N₂) over Cu/SiO₂ established utilisation of reactive hydrogen from alcohol dehydrogenation to convert intermediate imines to amines. Benzonitrile was the principal product due to the limited hydrogenation capacity of Cu. Inclusion of Au/TiO₂ with Cu/SiO₂ as a physical mixture promoted benzylamine formation and inhibited condensation-hydrogenation of benzylamine with benzaldehyde. Incorporation of H₂ at low partial pressure (P_H2 = 0.04 atm) in the feed and a lower reaction temperature (498 K → 448 K) enhanced benzylamine production.

在Cu / SiO ₂和Au / TiO ₂上已经证明了通过串联脱氢/胺化/还原从苄醇连续合成苄胺的可行性。两种催化剂均表现出等效的金属粒度范围（1-6 nm）和均值（3.1-3.2 nm，来自STEM）。氢化学吸附测量显示，在反应条件下，Au / TiO _2的吸收率比Cu / SiO ₂高（五倍）。苯甲醛在Cu / SiO _2上的还原胺化反应产生99％的二苄基胺收率，但未检测到苄基胺。苄醇与NH ₃（在N _2中）在Cu / SiO _{2上的反应}建立了利用醇脱氢反应中的活性氢将中间体亚胺转化为胺的方法。由于铜的加氢能力有限，苯甲腈是主要产品。将Au / TiO ₂与作为物理混合物的Cu / SiO ₂包括在内可促进苄胺的形成并抑制苄胺与苯甲醛的缩合加氢。在进料中以较低的分压（PH ₂ = 0.04 atm）和较低的反应温度（498 K→448 K）掺入H ₂可以提高苄胺的产量。