Mixed Chromate and Molybdate Additives for Cathodic Enhancement in the Chlorate Process

نویسندگان

چکیده

Abstract The economic viability of the electrochemical chlorate process depends on toxic chromate to induce cathodic selectivity hydrogen and mitigate reduction hypochlorite or chlorate. In this study, it is shown that performance a pilot plant for production can be sustained when 1000-fold in concentration compensated by addition molybdate. Laboratory measurements employing Quartz Crystal Microbalance suggest growth nanometre-thick hybrid Mo–Cr-oxide film selectivity. An optimized energy efficiency operation was obtained using 0.8 mM molybdate 27 μM chromate, balancing formation an effective oxide layer undesired Mo-induced decomposition oxygen solution. Refinement at scale level expected further optimize consumption, thereby increasing safety aspects production. Graphical

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ژورنال

عنوان ژورنال: Electrocatalysis

سال: 2021

ISSN: ['1868-2529', '1868-5994']

DOI: https://doi.org/10.1007/s12678-021-00666-7