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9th Australasian Symposium on Ionic Liquids

ASIL9 Satellite conference: 1-2 December

We are glad to announce that this year, ASIL9 will be held as a 2 day virtual satellite event from the 1st-2nd December (10am - 4pm, AEST). This conference will be primarily student- and ECR-focused. Registration is free and open now! Join our Slack channel to keep updated and social throughout the conference.

Keynote speakers

Prof. Tom Welton (Imperial College, London)

"Connecting Ion Structure and Flexibility with the Transport Properties of Ionic Liquids"

F. Philippi, P. Hunt, T. Welton

The transport properties of ionic liquids result from a complex mixture of effects, such as ion size, shape and interactions. Recently it has been suggested that the generally good transport properties of ionic liquids containing the bis(trifluoromethylsulfonyl)imide ion results from its flexibility. We have combined theoretical approaches with the synthesis of ions that are as close as possible in all other regards, but differing in flexibility to explore the significance of this effect. I will report the results of these studies here.

Prof. Hiroyuki Ohno (Tokyo University of Agriculture and Technology)

"Iconic Liquids"

H. Ohno

The most attractive characteristic of ionic liquids is the diverse ion structure and accordingly designable properties. This widely designable properties is very iconic for liquids. In my talk, I will introduce a few interesting properties and component ions to design functional ionic liquids. Expanded application area will be inspired by coupling ionic liquids with molecular liquids. As this example, I will introduce unique phase transition of ionic liquid/water mixture driven by temperature change.

Prof. Margarida Costa Gomes (CNRS and ENS, Lyon)

M. Costa Gomes

"Low pressure carbon dioxide capture and utilisation using porous ionic liquids"

Porous ionic liquids are non-volatile materials capable of absorbing high quantities of gases. In order to improve the capacity and selectivity of carbon dioxide absorption, we prepared porous ionic liquids based on ZIF-8 – a zinc based metal organic framework – and acetate or levulinate phosphonium salts. Because carbon dioxide can reversibly react with the ionic liquids, the capacity of the porous ionic liquid thus formed is considerably enhanced when compared with the porous solid or the pure ionic liquids.

Figure 1. Absorption of CO2 in a reactive porous ionic liquid compared with the pure salt and ZIF-8.
An enhancement of 103 % mmol/g CO2 at 1 bar and 303 K is observed in the porous ionic liquid when compared with pure ZIF-8.

We have also used porous ionic liquids to convert CO2 into cyclic carbonates by its coupling with epoxides (Figure 2). The use of pure ionic liquids as organocatalysts for this reaction is well documented but the use of porous ionic liquids represents a new approach never explored before and we will show how it offers the possibility of using milder and safer conditions of reaction.

Figure 2. Coupling of carbon dioxide with styrene oxide to form useful cyclic carbonates.

Dr. Małgorzata Swadźba-Kwaśny (Queen's University, Belfast)

M. Swadźaba-Kwaśny

"Protic ionic liquids: how structure in the liquid phase is reflected in macroscopic properties and performance in catalysis"

Protic ionic liquids are a very appealing family of ionic liquids. Easy synthesis through a simple acid-base neutralisation offers a route to the cheapest ionic liquids available to a chemist. Non-stoichiometric reactions lead to Brønsted acidic or basic systems, which can be used as proton-conducting electrolytes or as Brønsted acidic catalysts. When weak acids are used, non-complete proton transfer results in interesting dynamic equilibria that are keenly studied by physical and theoretical chemists.

In my talk, I will present our neutron scattering studies on protic ionic liquids formulated with weak and strong acids and demonstrate how the liquid phase structure is reflected in macroscopic properties and performance in acid catalysis.

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Abstract submission has now closed, but registration is still open for non-presenting attendees. A full schedule can be downloaded here.