method for performing an electrochemical reaction and electrode for an electrochemical cell for the implementation of this method.

摘要

1,194,181. Preparation of metanilic acid electrolytically. NATIONAL RESEARCH DEVELOPMENT CORP. 17 May, 1967 [24 May, 1966], No. 23070/66. Heading C2C. [Also in Divisions C7 and H1] An electrode for an electrochemical cell which may be used for cathodic reduction of mnitrobenzene sulphonic acid to metanilic acid comprises a bed of conducting and/or semiconducting particles and means whereby in operation the bed is fluidized, by upward passage therethrough of electrolyte, optionally containing one or more reactants. Fig. 1 shows a cell having a catholyte chamber formed by two flanged porous plastics tubes 1, 2 with a porous plastics plate 3 between them, above which lie the cathode particles, e.g. of copper powder, and round this an anolyte chamber formed by glass tube 5 lined with a lead anode 4, both chambers being closed by end plates 6, 7 through which pass catholyte and anolyte inlet and outlet tubes, a terminal 8 for the lead anode, a copper rod cathode conductor 9, and a reference electrode probe 14. In Fig. 2 (not shown), a single porous central tube houses the anode particles of, e.g. platinum, a surrounding glass tube contains the cathode particles of, e.g. copper, and both tubes have as base a single porous plastics plate, through which electrolyte is fed from a single chamber, cylindrical gauzes act as electrode conductors.