Related Experiment Video
Updated: Jan 8, 2026
Hydrogen Production and Utilization in a Membrane Reactor
Published on: March 10, 2023
Hydrogen production via alcohol oxidation using a mixed conductive graphene oxide membrane reactor
Toma Kiyozawa1, Kotaro Furuya1, Mana Yamaguchi1
1Department of Applied Chemistry and Biochemistry, Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan.
Abstract:
The efficient production of pure hydrogen remains a critical challenge beyond energy-intensive steam reforming. We report a cerium-intercalated, partially reduced graphene oxide (Ce-prGO) membrane with mixed proton-electron conductivity that acts as a voltage-free reactor for hydrogen generation. Ce-prGO enables alcohol oxidation on one side of the membrane, while protons and electrons permeate and recombine into high-purity H2 on the opposite side. Our findings establish graphene-based mixed-conductive membranes as a sustainable platform for CO2-free hydrogen production from renewable feedstocks.
More Related Videos
Related Concept Videos
02:15Preparation of Alcohols via Addition Reactions
The acid-catalyzed addition of water to the double bond of alkenes is a large-scale industrial method used to synthesize low-molecular-weight alcohols. An acidic atmosphere is required to allow the hydrogen in the water molecule to act as an electrophile and attack the double bond in an alkene. The addition of a proton to the double bond creates a carbocation intermediate. The proton preferentially bonds to the less substituted end of the double bond to create a more stable carbocation...
03:08Hydroboration-Oxidation of Alkenes
02:37Oxidation of Alcohols
The process of oxidation in a chemical reaction is observed in any of the three forms:
02:17Reduction of Alkenes: Asymmetric Catalytic Hydrogenation
The metal catalyst used can be either heterogeneous or homogeneous. When hydrogenation of an alkene generates a chiral center, a pair of enantiomeric products is expected to form. However, an enantiomeric excess of one of the products can be facilitated using an enantioselective reaction or an...
02:23Alcohols from Carbonyl Compounds: Reduction
Catalytic hydrogenation is similar to the reduction of an alkene or alkyne by adding H2 across the pi bond in the presence of transition metal catalysts like Raney Ni, Pd–C, Pt, or Ru. Aldehydes and ketones can be reduced by this method, often under mild to moderate heat (25–100°C) and...
02:13Reduction of Alkenes: Catalytic Hydrogenation
Metals like palladium, platinum, and nickel are commonly used in their solid forms — fine powder on an inert surface. As these catalysts remain insoluble in the reaction mixture, they are referred to as heterogeneous catalysts.
The hydrogenation process takes place on the...