The problem of the electrochemical/electrocatalytic stability of perchlorate ions is surveyed in the light of recent experimental results obtained at various temperatures, perchlorate concentrations, and pH values. The practical aspects of the reduction of perchlorate ions are considered with respect to the environmental problems of perchlorate contamination caused by the rocket and missile industry. The electrocatalytic, catalytic and electrochemical reduction processes are presented and the links between them are outlined. Some elements of the mechanistic aspects of the complicated reduction processes are discussed. A special stress is laid on the reduction processes occurring in the case of anodic dissolution and corrosion of metals. The anodic dissolution of iron group metals in aqueous perchloric acid/perchlorate media is discussed and the behavior of Fe, Co and Ni is compared. Various methods for the detection of the occurrence of the reduction process are presented, e.g. potential step method, impedance spectroscopy, and voltammetry. As an important additional information source results of anion adsorption studies carried out by radiotracer technique in the course of corrosion processes are presented. The applicability of radiotracer methods for the detection of slow perchlorate reduction processes is demonstrated.
|Title of host publication||Perchlorates|
|Subtitle of host publication||Production, Uses and Health Effects|
|Publisher||Nova Science Publishers, Inc.|
|Number of pages||49|
|Publication status||Published - Dec 1 2011|
ASJC Scopus subject areas