Materials for global carbon dioxide recycling

• Published in: Corrosion science Vol. 44; no. 2; pp. 371 - 386
• Main Authors: Hashimoto, K., Yamasaki, M., Meguro, S., Sasaki, T., Katagiri, H., Izumiya, K., Kumagai, N., Habazaki, H., Akiyama, E., Asami, K.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 01.02.2002; Elsevier Science
• Subjects: Air pollution; Applied sciences; Carbon dioxide; Catalysts; CO 2 methanation; Corrosion; Corrosion mechanisms; Electrodes; Electrolysis; Exact sciences and technology; Hydrogen production; Metals. Metallurgy; Mn–Mo–O anode; Nickel base alloys; Ni–Fe–C cathode; Ni–Zr catalyst; Oxygen evolution; Pollution abatement; Reactions (chemical); Seawater electrolysis; Ni–Fe–C cathode; Mn–Mo–O anode; CO 2 methanation; Oxygen evolution; Ni–Zr catalyst; Seawater electrolysis; Hydrogen production; Material selection; Recycling; Anode; Electrolysis; Cathode; Carbon dioxide
• ISSN: 0010-938X; 1879-0496
• DOI: 10.1016/S0010-938X(01)00067-1

CO 2 emissions, which induce global warming, increase with the development of economic activity. It is impossible to decrease the CO 2 emissions by suppression of the economic activity. Global CO 2 recycling can solve this problem. The global CO 2 recycling consists of three district: The electricity is generated by solar cells on deserts. At desert coasts, the electricity is used for H 2 production by seawater electrolysis and H 2 is used for CH 4 production by the reaction with CO 2. CH 4 which is the main component of liquefied natural gas is liquefied and transported to energy consuming districts where CO 2 is recovered, liquefied and transported to the desert coasts. A CO 2 recycling plant for substantiation of our idea has been built on the roof of the Institute for Materials Research in 1996. Key materials necessary for the global CO 2 recycling are the anode and cathode for seawater electrolysis and the catalyst for CO 2 conversion. All of them have been tailored by us. They have very high activity and selectivity for necessary reactions in addition to excellent durability. A pilot plant consisting of minimum units in an industrial scale is going to be built in three years.