Dry reforming of methane (DRM) over Ni-based catalysts is a promising method to convert greenhouse gases CH₄ and CO₂ into valuable synthesis gas. However, the major drawback of DRM over Ni-based catalysts is its deactivation due to metal sintering and coke formation. Herein, Ni catalysts confined between boron nitride (BN)–nanoceria (NC) interfaces have been originally developed and demonstrated as efficient and stable DRM catalysts, which exhibit high activity and high resistance towards carbon deposition. The stronger interaction between nickel and BN–nanoceria interfaces led to higher concentration of Ce³⁺ species, which promotes adsorption and activation of CO₂ and thus facilitates the fast formation of –OH species. The active –OH species is crucial to prevent coke formation and improve the stability of Ni catalysts. This work demonstrates that restriction of metal nanoparticles within a nano-interface through the confinement effect is a successful strategy to develop coke-resistant catalysts.

中文翻译：

---

BN-纳米级界面受限的Ni催化剂上甲烷的耐焦化干重整

在Ni基催化剂上进行甲烷干法重整是将温室气体CH ₄和CO ₂转化为有价值的合成气的有前途的方法。但是，DRM优于镍基催化剂的主要缺点是由于金属烧结和形成焦炭而使其失活。在此，最初开发并限制在氮化硼（BN）-纳米级（NC）界面之间的Ni催化剂是有效且稳定的DRM催化剂，具有高活性和高抗碳沉积性。镍与BN-纳米细菌界面之间更强的相互作用导致更高的Ce ³⁺物种浓度，从而促进了CO _2的吸附和活化因此促进了-OH物质的快速形成。活性-OH物质对于防止焦炭形成和提高Ni催化剂的稳定性至关重要。这项工作表明，通过限制作用将金属纳米颗粒限制在纳米界面内是开发耐焦炭催化剂的成功策略。