9th IUPAC International Conference on Green Chemistry (9th ICGC)

9th IUPAC International Conference on Green Chemistry (9th ICGC)
5th-9th September, 2022 – Athens, GREECE


The 9th IUPAC International Conference on Green Chemistry (9th ICGC), will take place in Athens, Greece, on 5th – 9th September 2022 at Zappeion Megaron, offering the choice of virtual participation. The 9th IUPAC International Conference on Green Chemistry is organized by the Association of Greek Chemists(AGC) in collaboration with the IUPAC Interdivisional Committee on Green Chemistry for Sustainable Development (ICGCSD). It is endorsed by IUPAC and will be held under the auspices and recognition of EuChemS, ACS, the Hellenic Green Chemistry Network and the Departments of Chemistry of Aristotle University of Thessaloniki and of National and Kapodistrian University of Athens.

The main aim of the IUPAC International Conference series on Green Chemistry (ICGC) is to bring together all relevant stakeholders from academia, research, industry, NGOs, policy makers and society, to exchange and disseminate knowledge and ideas that promote the concept of green chemistry, sustainable development and circular economy.This year’s conference is the ninth of the ICGC series, the first having been organized in Germany (2006), followed by Russia (2008), Canada (2010), Brazil (2012), South Africa (2014), Italy (2016), Russia (2017) and Thailand (2018).

The 9th ICGC will cover the following general topics:

  • Green Chemistry in Academia, Research and Industry
  • Green Chemistry in Education and Society
  • Green Chemistry for Sustainable Development, Bioeconomy and Circular Economy

The scientific programme will deal with the global trends and developments in the field of green and sustainable chemistry, as well as with research and technology aspects of high importance to specific parts of the world. For example, the topic of biomass valorization will be discussed both with regard to agricultural as well as forestry wastes in order  to be of interest to the relevant countries and regions. On the other hand, the use of non-toxic solvents, the development of low/no waste industrial chemical processes, the use of bio- and degradable plastics and the increase of societal and political awareness towards green chemistry practices, will comprise of topics with a broader audience. The contribution of Green Chemistry to the implementation of Sustainable Development Goals set by the United Nations will be also highlighted. Within this context, both novel fundamental chemistry approaches as well as dedicated industry-oriented processes will be discussed, in the different areas of chemistry and chemical engineering.


More information


BlackCycle consortium with CERTH propose an abstract at the 9th IUPAC International Conference on Green Chemistry (9th ICGC)

CATALYTIC UPGRADING OF END-OF-LIFE TYRE PYROLYSIS VAPOURS FOR THE PRODUCTION OF HIGHLY AROMATIC PYROLYSIS OILS – 5th–9th September 2022 by S.D. Stefanidis, S.A. Karakoulia, E. Pachartouridou, E. Heracleous, A.A. Lappas



Catalytic upgrading of end-of-life tyre pyrolysis vapours for the production of highly aromatic pyrolysis oils


Stefanidis S.D.¹ , Karakoulia S.A.¹ , Pachatouridou E. ¹ , Heracleous E.¹,² and Lappas A.A.¹*

¹ Chemical Process and Energy Resources Institute (CPERI), Centre for Research and Technology Hellas (CERTH), Thessaloniki, Greece

² School of Science and Technology, International Hellenic University, Thessaloniki, Greece *angel@cperi.certh.gr



Globally, around 1.6 billion tyres are sold annually and roughly an equal number of tyres enter the end-of-life tyre (ELT) category each year. ELTs are typically recycled into products that find applications in civil engineering or are used as fuel substitutes in kilns and boilers. However, there is currently an oversupply of ELTs and around 50% of them are not recycled. Moreover, ELT recycling is currently not circular, as the recycling products are not re-used to produce new tyres. However, ELTs can be pyrolysed to produce liquid, solid and gas products. The solid pyrolysis product, can be used as a substitute for carbon black (filler) for the production of new tyres. The heavy aromatic compounds in the liquid product can be used as feedstock in a furnace process to produce virgin carbon black, which can also be used for the production of new tyres. The gas product can be burned to produce electricity or to provide heat for the pyrolysis process. In this work, we investigated the catalytic upgrading of ELT pyrolysis vapours with the aim to produce highly aromatic pyrolysis oils. ELTs were pyrolysed in a bench-scale fixed bed reactor and the produced pyrolysis vapours were catalytically upgraded using various catalysts. The produced pyrolysis oils were thoroughly characterized and the effect of each catalyst on the composition of the pyrolysis oils was investigated. The most promising catalysts were also tested in a medium-scale continuous catalytic pyrolysis unit with two cascading bubbling bed reactors.


Two ELT feedstocks were used for the pyrolysis experiments and their properties are presented in Table 1. ELT1 was described as “granules of multi-brand truck tyres” and ELT2 was described as “granules of multi-brand all tyre”. The main difference between the two feedstocks was the particle size. ELT1 was used in the bench-scale pyrolysis runs, while ELT2 was used in the medium-scale pyrolysis runs. The catalysts used were a Y zeolite[1]based refinery equilibrium FCC catalyst (USY), a Y zeolite-based refinery catalyst poisoned with 1.6 wt% Ni (Ni/USY), a ZSM-5 zeolite-based refinery catalyst additive (ZSM-5), a ZSM-5 zeolite-based refinery catalyst additive wet-impregnated with 5.5 wt% Co (Co/ZSM-5) and a low-cost MgO catalyst derived from natural magnesite ore via simple calcination (MgO). The pyrolysis of the ELTs and the upgrading of the pyrolysis vapours were carried out at 500 °C. A detailed description of the bench-scale fixed bed reactor can be found at [1], while a detailed description of the continuous medium-scale catalytic pyrolysis unit can be found at [2]. The pyrolysis oils were thoroughly characterised by elemental analysis, simulated distillation, GC, GC-MS and HPLC to determine their elemental composition and content in aromatics