Cross-flow electrochemical reactor cells, cross-flow reactors, a

Details Cross-flow electrochemical reactor cells, cross-flow reactors, a Cross-flow electrochemical reactor cells, cross-flow reactors, a

1993-04-16

1994-10-18

Willis, Jr., Prince

Chemistry: electrical current producing apparatus, product, and

Having disparate nonelectrical function

429 13, 429 30, 429 31, 429 32, 204270, 204277, 204278, H01M 800

Patent

active

053567285

ABSTRACT:
This invention discloses cross-flow electrochemical reactor cells containing oxygen permeable materials which have both electron conductivity and oxygen ion conductivity, cross-flow reactors, and electrochemical processes using cross-flow reactor cells having oxygen permeable monolithic cores to control and facilitate transport of oxygen from an oxygen-containing gas stream to oxidation reactions of organic compounds in another gas stream. These cross-flow electrochemical reactors comprise a hollow ceramic blade positioned across a gas stream flow or a stack of crossed hollow ceramic blades containing a channel or channels for flow of gas streams. Each channel has at least one channel wall disposed between a channel and a portion of an outer surface of the ceramic blade, or a common wall with adjacent blades in a stack comprising a gas-impervious mixed metal oxide material of a perovskite structure having electron conductivity and oxygen ion conductivity. The invention includes reactors comprising first and second zones seprated by gas-impervious mixed metal oxide material material having electron conductivity and oxygen ion conductivity. Prefered gas-impervious materials comprise at least one mixed metal oxide having a perovskite structure or perovskite-like structure. The invention includes, also, oxidation processes controlled by using these electrochemical reactors, and these reactions do not require an external source of electrical potential or any external electric circuit for oxidation to proceed.

REFERENCES:
patent: 4426196 (1984-10-01), Poeppel et al.
patent: 4476197 (1984-10-01), Hercey
patent: 4883497 (1989-11-01), Claar et al.
patent: 4948680 (1990-08-01), Madou et al.
patent: 4950562 (1990-08-01), Yoshida et al.
patent: 5134042 (1992-07-01), Madou et al.

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