PTQ Q4 2022 Issue

reproducibility experiment after a feed ratio variation (hollow symbols) entails only a minor loss in activity which might also derive from temperature strain on the catalyst in conse- quence of the increasing runtime. After unloading the processed catalyst, strong discol- ouration of the outlet inert material was found, indicating deposits of volatile copper species that escaped from the catalyst. The CuCrO 2 shows a significantly more stable performance after a condition change and good reproduc- ibility. The discolouration was also less intense. Within customer projects, this unit was processed with more than 300 hours on stream and showed the excellent stability of the equipment. Mass transfer has not been investigated, which could affect the result. The mass balance was closed for all the runs. Outlook A high throughput unit has been developed that is suitable for chlorine chemistry, with the ability to accelerate catalyst screening at industrially relevant conditions and extended runtime. An experimental protocol was developed for the Deacon reaction, including the variation of temperature, pressure, feed ratio, and residence time in a wide param- eter range. Using a tailored, fast FTIR analysis method based on a collaboration with Gasmet Technologies allows for differ- entiating between a more active and stable catalyst, result- ing in enhanced catalyst research. The essential concept behind this unit is transferrable to other scales in the labo- ratory environment and contributes to accelerated research in the field of chlorine chemistry.

References 1 Fauvarque J, Pure & Appl. Chem . 68 (9) 1996, 1713.

2 Asaro M, IHS Markit PEP Review Hydrochloric Acid (HCl) Recycle to Chlorine by the Sumitomo Catalytic Oxidation Process , December Issue (2019). 3 Iwanaga K et al ., R&D Report Sumitomo Chemicals (1) www.sum- itomo-chem.co.jp/english/rd/report/files/docs/20040100_p0e.pdf (last access 25.07.2022). 4 https://matthey.com/products-and-markets/pgms-and-circularity/ pgm-management 5 Mondelli C, Amrute A P, Schmidt T, Pérez-Ramírez J, Chem. Com- mun. 47 2011, 7173–7175. 6 Valtchev M, Hammes M, Richter R, Höltzen H, Stöwe K, Maier W F, Chem. Eng. Technol . (2014) 37 No. 7, 1251-1260. 7 Ihara Y, Ohgame H, Sakiyama K, Corros. Sci. 21 (12) 1981, 805-817. Enrico Lorenz is Segment Lead Petrochemicals for hte GmbH. He studied chemical engineering at the Technical University of Dresden and worked on his PhD at the Karlsruhe Institute of Technology (KIT), Germany. Moritz Dahlinger is Project Coordinator for hte. He holds a Masters in chemical engineering from KIT. Tobias Zimmermann is Segment Lead Intermediate, Chemicals & Spe- cialties for hte. He studied chemistry at Technical University of Munich, Germany and moved to the Max-Planck-Institut für Kohlenforschung in Mülheim a.d. Ruhr, Germany for his PhD studies. Jean-Claude Adelbrecht is Senior Business Development Manager for hte. He has been working in the field of high throughput experimen - tation for over 10 years. He holds a PhD in chemistry from Imperial College London, UK. Markus Frietsch is Application Development Specialist FTIR for Gas- met Technologies. He holds a Dipl.-Chem. and doctoral degree in in- strumental analysis from Karlsruhe University (now part of KIT).

Discover a new way of catalyst handling under nitrogen

Be a game changer!

In today’s modern world, there are many good reasons for finding ways to minimise the number of hours oper- atives spend in a nitrogen atmosphere during catalyst handling projects. Our focus is on the future and on delivering reliable solutions to achieve this goal.  Is safety your highest priority?  Are you interested in helping us cut the time catalyst handling operatives spend in a nitrogen atmosphere? We have a solution to do just this. Simply get in touch to discuss how this technology can be used at your plant! BUCHEN-ICS GmbH Emdener Str. 278 // 50735 Cologne // Germany T +49 221 7177-0 // vertrieb.ics@buchen.net // buchen-ics.com A company of the REMONDIS Group

Be a game changer!

PTQ Q4 2022