Excess-Methane CO₂ Reforming over Reduced KIT-6-Ni-Y Mesoporous Silicas Monitored by In Situ XAS-XRD.

ABSTRACT: Making Europe less dependent on imported fuels requires a long-term strategy. Low-quality natural gas and biogas could be used to mitigate the energy crisis, and excess-methane dry reforming has the potential to upgrade a mixture of CH₄ and CO₂. Herein, nickel-based KIT-6-supported catalysts (KIT-6-Ni) were modified with 3, 6, and 8 wt % of yttrium (Y/Ni molar ratio of 0.5, 1.07, and 1.5) to investigate the influence of this element on catalytic performance. Yttrium was well dispersed, preserving the mesopore structure of KIT-6. The yttrium addition increased the total basicity, contributing to a lower deactivation factor and remarkably stable syngas production compared to the catalyst containing only Ni. In situ XAS-XRD showed that Y allowed for the reduction of Ni

SUBMITTER: Swirk Da Costa K 

PROVIDER: S-EPMC10714349 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature