title: Development of industrial catalysts for sustainable chlorine production.
abstract: The heterogeneously catalyzed gas-phase oxidation of HCl to Cl(2) offers an energy-efficient and eco- friendly route to recover chlorine from HCl-containing byproduct streams in the chemical industry. This process has attracted renewed interest in the last decade due to an  increased chlorine demand and the growing excess of byproduct HCl from chlorination processes. Since its introduction (by Deacon in 1868) and till recent times, the industrialization of this reaction has been hindered by the lack of sufficiently active and durable materials. Recently, RuO(2)-based  catalysts with outstanding activity and stability have been designed and they are being implemented for large-scale Cl(2) recycling. Herein, we review the main limiting features of traditional Cu-based catalysts and survey the key steps in the development of the new generation of  industrial RuO(2)-based materials. As the expansion of this technology would benefit from cheaper, but comparably robust, alternatives to RuO(2)-based catalysts, a nov el CeO(2)-based catalyst which offers promising perspectives for application in this field has  been introduced.
authors.affiliation: Institute for Chemical and Bioengineering, Department of Chemical and Applied Biosciences, ETH Zurich, Zürich, Switzerland.
authors.forename: Cecilia
authors.initials: C
authors.lastname: Mondelli
authors.forename: Amol P
authors.initials: AP
authors.lastname: Amrute
authors.forename: Maximilian
authors.initials: M
authors.lastname: Moser
authors.forename: Timm
authors.initials: T
authors.lastname: Schmidt
authors.forename: Javier
authors.initials: J
authors.lastname: Pérez-Ramírez
mesh_terms: D002384:Catalysis; D002563:Cerium / Q000737:chemistry; D002617:Chemical Industry; D002713:Chlorine / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D002563:Cerium; D002713:Chlorine; C030583:ceric oxide