Abstract
Dry reforming of methane (DRM) shows bright prospects for the treatment and value-added utilization of greenhouse gas, and catalyst inactivation has been a long-standing grand challenge for this process. Here, a catalyst of attapulgite-derived MFI (ADM) zeolite encapsulated Ni-Co alloys was synthesized using a one-pot method. Characterization results demonstrated that the Ni-Co alloys, which could be stably presentduring DRM process, favored the formation of electron-rich Ni metal sites and thus significantly enhanced C-H bond breaking ability. Meanwhile, the ADM zeolite not only firmly anchored metallic sites by pore or layer confinement, but also provided abundant CO2 adsorption/activation centers. These contributed to the improved anti-sinter and anti-coke ability as well as superior DRM activity of 10Ni1Co@ADM-0.1 catalyst. This work is expected to supply guidance for the development of clay-based metallic Ni catalysts and its application in DRM for syngas production.
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