Symposium 3.4

 CATALYSIS, SORPTION, AND SEPARATION

FOR A CLEANER ENVIRONMENT 

(3 sessions)

Keywords

Catalysis, sorption, clean fuels, biocatalysis, photocatalysis, electrocatalysis, catalysis by nanoparticles, computational design, multiscale modeling, in-silico screening, multifunctional membranes, process efficiency, carbon efficiency, processing of waste waters.

Organisers

Christophe COPÉRET (ETH, Zürich, CH), Gerhardt MESTL (MuniCat, TU-Munich – Clariant, Münich, DE), Pascal RAYBAUD (IFP Energies Nouvelles, Solaize, FR)

 

Abstract

Among the 17 sustainable development goals (SDG) adopted by the UN 70th general assembly in December 2015, SDG 6 “Ensure availability and sustainable management of water and sanitation for all”, SDG 7 “Ensure access to affordable, reliable, sustainable, and modern energy for all” and SDG 11 “Make cities and human settlements inclusive, safe, resilient and sustainable” will more than ever rely on innovative and intensified catalytic processes and separation operations. Indeed, these technologies rooted in chemical sciences are key for efficient and economical cleaning of fuels, exhaust gases, and water, with main goals of minimizing air and water pollution caused by human activities. This symposium will then focus on advances in catalysis, sorption and separation for a cleaner environment. It should address design from first principles, preparation, characterization, and performances screening of catalysts, sorbents and functionalized membranes, theoretical studies of reaction pathways at the microscopic scale, and multiscale modeling of processes. Catalytic processes may encompass reductive or oxidative ways to selectively remove contaminants, with thermal, as well as electrochemical and photochemical activation. Heterogeneous, homogeneous and enzymatic catalysts can be considered. Bioremediation processes are included in the scope, as special cases of in vivo biocatalysis. The disclosure of innovative catalysts, sorbents and membranes preparation methods allowing control of structures, textures and morphologies of solids at the nanoscale will be of major interest but should be supported by demonstration of performance improvements. Advanced architectures of molecular catalysts will be considered in the same spirit. Operando characterization studies of the working catalysts, sorbents and membranes are expected to provide insightful results, all the more as they are combined with first-principles atomistic modeling studies. Examples of topics of great global significance are the deep hydrodesulfurization of fossil fuels (and more broadly deep hydrorefining), catalytic converters and particle filters for car exhausts, industrial exhausts gases cleaning, volatile organic compounds reduction in workshops, confined public spaces and homes, water pollution by nitrates and pesticides dissemination generated by intensive agricultural activities, processing of waste waters such as oxidative Fenton or photo-Fenton processes, decontamination of nuclear sites. This list is not exhaustive.