Calcium-looping reforming of methane realizes in situ CO₂ utilization with improved energy efficiency.

ABSTRACT: Closing the anthropogenic carbon cycle is one important strategy to combat climate change, and requires the chemistry to effectively combine CO₂ capture with its conversion. Here, we propose a novel in situ CO₂ utilization concept, calcium-looping reforming of methane, to realize the capture and conversion of CO₂ in one integrated chemical process. This process couples the calcium-looping CO₂ capture and the CH₄ dry reforming reactions in the CaO-Ni bifunctional sorbent-catalyst, where the CO₂ captured by CaO is reduced in situ by CH₄ to CO, a reaction catalyzed by catalyzed by the adjacent metallic Ni. The process coupling scheme exhibits excellent decarbonation kinetics by exploiting Le Chatelier's principle to

SUBMITTER: Tian S 

PROVIDER: S-EPMC6461455 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature