CO₂ (dry) reforming of methane (DRM) is a significant and useful reaction from the standpoint of effective utilization and conversion of two main greenhouse gases to value-added synthesis gas. To achieve highly efficient and stable DRM reaction, a Silicalite-1-encapsulated ultrafine Ni nanoparticle catalyst (Ni@S-1)by using Ni phyllosilicate (Ni-PS) as precursor was newly developed. This Ni@S-1 catalyst exhibited negligible coke deposition (0.5 wt.%) evaluated at 600 °C for 5 h. Additionally, this Ni@S-1 catalyst presented high and stable catalytic performances and maintained the Ni nanoparticles with ultrafine size (< 7 nm) at 850 °C for 24 h. Therefore, this Ni@S-1 catalyst showed good suppression of coke formation and high resistance to nickel sintering and thus was promising for DRM reaction.

从两种主要温室气体的有效利用和转化为增值合成气的角度来看，甲烷的CO ₂ （干）重整（DRM）是一种重要且有用的反应。为了实现高效稳定的DRM反应，以层状硅酸镍（Ni-PS）为前驱体，新开发了一种Silicalite-1封装的超细镍纳米粒子催化剂（Ni@S-1）。这种 Ni@S-1 催化剂在 600 °C 下 5 小时的评估显示出可忽略不计的焦炭沉积（0.5 wt.%）。此外，这种Ni@S-1催化剂表现出高而稳定的催化性能，并在850°C下保持24小时超细尺寸（<7 nm）的Ni纳米颗粒。因此，这种Ni@S-1催化剂表现出良好的焦炭形成抑制能力和高抗镍烧结性，因此在DRM反应中具有广阔的应用前景。