Working in a multi-disciplinary project can very challenging regarding the fact that even while speaking English everyone uses a “different language” due to their different backgrounds. Of course the same applies for the PIONEER project where people from plasma physics, catalysis and chemical engineering work together.

To make discussion as smooth as possible we came up with the idea of a dictionary to make sure everyone is speaking the same language. The different topics are color-marked as indicated in the legend below.

To get of a full explanation of the respective term click on the definition!

Plasma Physics
Chem. Engineering
Term Acronym/Symbol Unit Definition
Active site The term is often
Aggregate in catalysis Certain materials used as
Boltzmann Equation The Boltzmann equation rules
Catalyst A substance that increases
Conversion fA % mol fraction of a
Cross Section σ m2 The cross section is
Crystallinity The presence of 3D
Debye Length λD m A perturbation given by
Dielectric Barrier Discharge DBD A reactor design usually
Discharge A discharge describes the
Electron Energy Distribution Function EEDF The Electron Energy Distribution
Gas Hourly Space Velocity GHSV h-1 Ratio between volumetric flow
Gliding Arc Discharge GAD An intermediate between a
Heterogeneous catalysis Catalysis can be classified
Microwave Discharge The energy to accelerate
Non-Thermal Plasma NTP “Non-thermal” means that not
Particle A primary particle should
Paschen Curve The Paschen curve describes
RF Discharge A RF voltage is
Residence time τ h 1/GHSV or 1/WHSV
Selectivity Si % mol fraction of the
Sheath Quasi-neutrality ensures that the
Streamer A breakdown mechanism.
Time-on-Stream t h Time of reaction
Turnover frequency TOF s-1 Commonly called the turnover
Weight Hourly Space Velocity WHSV h-1 Ratio between mass flow
Yield Yi % mol fraction of initial