Gold nanoparticles supported on γ-Al₂O₃ catalyzed the hydrogen isotope exchange Н₂ + D₂ at low temperatures, ca. 77 K. The specific catalytic activity increases by a factor of ~800 as the particle size decreases from 39.3 to 0.7 nm. A correlation has been established between the catalytic activity of nanoparticles of different size and the concentration of low-coordination gold surface atoms. Apparently, the obtained empirical equations can be used to estimate the specific catalytic activity of gold nanoparticles of various sizes.

中文翻译：

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负载在γ-Al2O3上的金纳米粒子催化的H2-D2交换反应：粒径对反应速率的影响

支撑在金纳米颗粒的γ-Al ₂ ö ₃催化的氢同位素交换Н ₂  + d ₂在低温下，约 77K。随着粒度从39.3纳米减小到0.7纳米，比催化活性增加了约800倍。在不同尺寸的纳米颗粒的催化活性与低配位金表面原子的浓度之间已经建立了相关性。显然，所获得的经验方程式可用于估计各种尺寸的金纳米颗粒的比催化活性。