In this work, both binary and ternary transition metal phosphides (MoP, WP, Ni₂P, Fe₂P, CoP, NiMoP and CoMoP) were used as potential catalysts for dry reforming of methane (DRM). Moreover, Ni₂P, Fe₂P, CoP, NiMoP and CoMoP were tested in DRM for the first time. A comparison of various phosphide catalysts identified Mo-based phosphides (MoP, NiMoP and CoMoP) as having much higher DRM activity than phosphides of W, Ni, Fe and Co. It was worth mentioning that CoMoP can show a similar catalytic activity and stability to the Pt/γ-Al₂O₃ catalyst. The XRD, Raman and SEM results indicated that the resistance to coking, bulk oxidation and sintering of Mo-based phosphides was higher than that of phosphides of metals (W, Ni, Co and Fe). Furthermore, CoMoP exhibited the highest resistance to coking, oxidation and sintering among these phosphide catalysts. It was proposed that both the quantity and location of active sites for CH₄ and CO₂ dissociation over phosphides were crucial to maintain the oxidation–reduction cycle in DRM.

中文翻译：

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用于甲烷重整的二元和三元过渡金属磷化物

在这项工作中，二元和三元过渡金属磷化物（MoP，WP，Ni ₂ P，Fe ₂ P，CoP，NiMoP和CoMoP）均用作甲烷干重整的潜在催化剂（DRM）。此外，首次在DRM中测试了Ni ₂ P，Fe ₂ P，CoP，NiMoP和CoMoP。对各种磷化物催化剂的比较发现，Mo基磷化物（MoP，NiMoP和CoMoP）的DRM活性比W，Ni，Fe和Co的磷化物高。值得一提的是，CoMoP可以显示出与W，Ni，Fe和Co相似的催化活性和稳定性。在Pt /γ-Al系₂ ö ₃催化剂。XRD，拉曼和SEM结果表明，Mo基磷化物的抗焦化，本体氧化和烧结性能高于金属（W，Ni，Co和Fe）的磷化物。此外，在这些磷化物催化剂中，CoMoP表现出最高的抗焦化，氧化和烧结性。有人提出，CH ₄和CO ₂在磷化物上解离的活性位点的数量和位置对于维持DRM中的氧化还原循环至关重要。