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Continuous Room-Temperature Hydrogen Release from Liquid Organic Carriers in a Photocatalytic Packed-Bed Flow Reactor.


ABSTRACT: Despite the potential of hydrogen (H2 ) storage in liquid organic carriers to achieve carbon neutrality, the energy required for H2 release and the cost of catalyst recycling have hindered its large-scale adoption. In response, a photo flow reactor packed with rhodium (Rh)/titania (TiO2 ) photocatalyst was reported for the continuous and selective acceptorless dehydrogenation of 1,2,3,4-tetrahydroquinoline to H2 gas and quinoline under visible light irradiation at room temperature. The tradeoff between the reactor pressure drop and its photocatalytic surface area was resolved by selective in-situ photodeposition of Rh in the photo flow reactor post-packing on the outer surface of the TiO2 microparticles available to photon flux, thereby reducing the optimal Rh loading by 10 times compared to a batch reactor, while facilitating catalyst reuse and regeneration. An example of using quinoline as a hydrogen acceptor to lower the energy of the hydrogen production step was demonstrated via the water-gas shift reaction.

SUBMITTER: Ibrahim MYS 

PROVIDER: S-EPMC9400973 | biostudies-literature | 2022 Jul

REPOSITORIES: biostudies-literature

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Continuous Room-Temperature Hydrogen Release from Liquid Organic Carriers in a Photocatalytic Packed-Bed Flow Reactor.

Ibrahim Malek Y S MYS   Bennett Jeffrey A JA   Abolhasani Milad M  

ChemSusChem 20220518 14


Despite the potential of hydrogen (H<sub>2</sub> ) storage in liquid organic carriers to achieve carbon neutrality, the energy required for H<sub>2</sub> release and the cost of catalyst recycling have hindered its large-scale adoption. In response, a photo flow reactor packed with rhodium (Rh)/titania (TiO<sub>2</sub> ) photocatalyst was reported for the continuous and selective acceptorless dehydrogenation of 1,2,3,4-tetrahydroquinoline to H<sub>2</sub> gas and quinoline under visible light ir  ...[more]

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