Intermetallic catalysts for dry reforming of methane (DRM) based on Ni₃Al with low content of Pt and Ru have been developed. Self-propagating high-temperature synthesis (SHS) was used as a method of catalyst synthesis. Ion implantation was used to change the physical, chemical and catalytic properties of Ni₃Al as a matrix for this new type of catalysts for DRM. Ions of Pt and Ru were accelerated in an electrical field and impacted into a solid Ni₃Al. The catalytic performances were evaluated between 600 °C and 900 °C at atmospheric pressure. The feed was CH₄/CO₂/He = 20/20/60 vol.% mixture. Particle size and chemical evolution of catalysts were studied by XRD (in situ and ex situ), SEM, EDS, HRTEM + EDS and XPS. The active components were shown to be primarily dispersed in the nearsurface layer of Ni₃Al support as nanoparticles of size 5–10 nm, which were distributed homogeneously or heterogeneously, depending on the catalyst composition. Spinel structure of some catalysts is resistant to carbonization and provides high catalyst stability in DRM. Modification of catalyst by ion implantation had several positive impacts: 1) high catalytic activity and stability in DRM, 2) reducing of carbon deposits, 3) Pt and Ru prevent Ni phase sintering by avoiding particle coalescence.

已经开发了基于Ni ₃ Al的Pt和Ru含量低的甲烷干重整的金属间催化剂。自蔓延高温合成（SHS）被用作催化剂合成的方法。离子注入被用来改变Ni ₃ Al作为这种新型DRM催化剂的基质的物理，化学和催化性能。Pt和Ru离子在电场中被加速并撞击成固体Ni ₃ Al。在大气压下在600℃至900℃之间评估催化性能。进料为CH ₄ / CO ₂ / He ＝ 20/20/60体积％混合​​物。通过XRD（研究粒度和催化剂的化学演化原位和易地），SEM，EDS，HRTEM + EDS和XPS。结果表明，活性成分主要分散在Ni ₃ Al载体的近表面层中，粒径为5-10 nm，根据催化剂的组成均匀或不均匀地分布。一些催化剂的尖晶石结构耐碳化，并且在DRM中提供高催化剂稳定性。通过离子注入改性催化剂具有几个积极的影响：1）高的催化活性和DRM的稳定性，2）减少碳沉积，3）Pt和Ru通过避免颗粒聚结来防止Ni相烧结。