A novel yolk-shell [email protected] catalyst with Ni nanoparticles highly dispersed in the inner surface of hollow silica spheres([email protected]) was designed and prepared via a facile one-pot micro-emulsion method for its application in reactions pertaining to the dry reforming of methane (DRM). The small size of Ni particles, as well as the strong metal-support interaction and confinement effect of the porous silica shell give rise to excellent catalytic activity and stability. [email protected] showed significantly enhanced methane and carbon dioxide conversions that both nearly reached the thermodynamic equilibrium at a large gas hourly space velocity value and a prolonged stability over 55 h without carbon deposition.

设计了一种新型的蛋黄壳型[电子邮件保护]催化剂，该催化剂具有高度分散在空心二氧化硅球内表面的Ni纳米颗粒（[电子邮件保护]），并通过一种简便的一锅式微乳液法制备了该催化剂，用于与反应有关的反应中。甲烷的干重整（DRM）。Ni颗粒的小尺寸以及多孔二氧化硅壳的强金属-载体相互作用和约束作用带来了优异的催化活性和稳定性。[电子邮件保护]显示甲烷和二氧化碳转化率显着提高，在大的气体时空速值下几乎都达到了热力学平衡，并且在55个小时内没有碳沉积的情况下具有更长的稳定性。