The improved Ni/SBA-15 catalysts were prepared by thermal inducing method and applied to dry reforming of methane. The promoting effect exerted by thermal activated reconstruction was studied systematically by means of various characterization techniques. TEM results indicated that the thermal inducing process led to the reconstruction of Ni particles to form ultra-fine Ni nanoparticles (2–3 nm) uniformly distributed on SBA-15. The resulting Ni nanoparticles not only improved catalytic activity but also inhibited the formation of carbon deposition during the DRM reaction. The thermal treatment catalyst with tiny particles presented the superior catalytic performance in the DRM reaction, where H₂/CO ratio was close to 1 and no deactivation was discovered after continuous reaction at 750 °C for 50 h. Additionally, it was found that the metal-support interaction was strengthened observably after the thermal activated reconstruction. The strong interaction anchored Ni particles to prevent their high temperature sintering, thus forming stable catalytic centers. Therefore, the conversions of both CO₂ and CH₄ almost stabilized at 90% and 85%, respectively, for the thermal activated reconstruction samples during the long-term catalytic test.

通过热诱导法制备了改进的Ni / SBA-15催化剂，并将其用于甲烷的干重整。通过各种表征技术，系统地研究了热活化重建产生的促进作用。TEM结果表明，热诱导过程导致Ni颗粒重建，从而形成均匀分布在SBA-15上的超细Ni纳米颗粒（2-3 nm）。所得的Ni纳米颗粒不仅改善了催化活性，而且抑制了DRM反应期间碳沉积的形成。具有微小颗粒的热处理催化剂在DRM反应中表现出卓越的催化性能，其中H ₂/ CO比接近1，并且在750℃下连续反应50小时后未发现失活。另外，发现在热活化重建之后，金属-载体相互作用显着增强。强烈的相互作用固定了Ni颗粒，以防止其高温烧结，从而形成稳定的催化中心。因此，在长期催化测试期间，对于热活化的重建样品，CO ₂和CH ₄的转化率几乎分别稳定在90％和85％。