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Energy‐Efficient Gas‐Phase Electrolysis of Hydrogen Chloride
Author(s) -
Bechtel Simon,
VidakovićKoch Tanja,
Sundmacher Kai
Publication year - 2019
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.201800160
Subject(s) - electrolysis , hydrogen chloride , high temperature electrolysis , hydrochloric acid , hydrogen production , chlorine , hydrogen , aqueous solution , raw material , chemical engineering , electrochemistry , chemistry , gas phase , materials science , waste management , inorganic chemistry , organic chemistry , electrode , engineering , electrolyte
Hydrogen chloride is a by‐product in important processes like the polyurethane production. The currently most efficient electrochemical process for recycling it to chlorine is based on a liquid‐phase reactor, utilizing aqueous hydrochloric acid as a feedstock. Recent investigations showed that employing a gas‐phase reactor and according novel strategies for product purification leads to significant exergetic savings. This article aims to discuss the efficient electrolysis of gaseous HCl on the reactor level but also on the overall process level in comparison to the current state of the art.