Pulsed field gradient NMR diffusion measurements provide a non-invasive measure of the mass transport (self-diffusion) characteristics of liquids confined to porous catalyst materials. Here we explore the ability of this technique to probe the diffusive behaviour of a series of short-chain primary alcohols within a mesoporous catalyst support material; through the comparison of our results with highly surface-sensitive NMR relaxation data, we show that the evaluation of bulk-pore diffusion dynamics may provide a simple and indirect method to access and explore surface interaction phenomena occurring at the catalyst-liquid interface.

中文翻译：

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核磁共振研究表面相互作用对介孔催化剂载体中液体扩散的影响

脉冲场梯度NMR扩散测量提供了一种非侵入性的方法，可以测量局限于多孔催化剂材料中的液体的质量传输（自扩散）特性。在这里，我们探索了该技术探测中孔催化剂载体材料中一系列短链伯醇的扩散行为的能力。通过将我们的结果与高度表面敏感的NMR弛豫数据进行比较，我们表明，对大孔扩散动力学的评估可能提供一种简单而间接的方法来访问和探索在催化剂-液体界面处发生的表面相互作用现象。