Journal
AICHE JOURNAL
Volume 65, Issue 11, Pages -Publisher
WILEY
DOI: 10.1002/aic.16740
Keywords
CO-free H-2; membrane reactor; proton conducting membrane; steam methane reforming; syngas
Categories
Funding
- China Postdoctoral Science Foundation [2016M602208]
- National Natural Science Foundation of China [21601196, 21536005]
- Dalian National Laboratory For Clean Energy(DNL), CAS [DICPQIBEBT UN201708]
- Director Innovation Fund of Key Laboratory of Biofuels, Chinese Academy of Sciences [Y57201190V]
- DICPPQIBEBT, CAS [DICPQIBEBT UN201708]
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Steam methane reforming (SMR) is a commercial process to produce syngas. Normally, the as-produced syngas is characterized by a H-2/CO ratio of 3. However, such H-2/CO ratio is unsuitable for Fischer-Tropsch synthesis. The hydrogen obtained by subsequent upgrading of syngas usually contains residual CO, which readily deactivates Pt electrocatalysts in fuel cells. Here we report an innovative route by coupling SMR with H-2 removal in a proton conducting membrane reactor to coproduce syngas with a preferable H-2/CO ratio of 2 and CO-free H-2 on opposite sides of the membrane, which can be directly used for Fischer-Tropsch synthesis and fuel cells, respectively. Notably, H-2 is in-situ extracted by the membrane that only allows the permeation of H-2 as protons through the oxide lattice with infinite selectivity, and thus the obtained H-2 is CO-free. This work could provide an alternative option in one-step conversion of methane into two inherently separated valuable chemicals.
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