A new and powerful method for the synthesis of hydrogen storage materials and monitoring of hydrogenation reactions by reactive ball milling under high hydrogen atmosphere has been developed. It involves high-energy ball milling in an especially designed vial, allowing in-situ monitoring of temperature and, more importantly, of hydrogen pressure by incorporating a newly developed gas-temperature measurement system as well as a radio emitter into the vial lid. An external receiver transmits the data to a data acquisition computer.
(O. Gutfleisch et. al., J. Alloys and Comp. 427 (2007) 204)
- insight in physical and chemical processes during high-energy
- of functional materials such as hydrides, intermetallic
compounds, ceramics, bulk metallic glasses etc.
- quick check of catalytic efficiency
- accelerated hydride formation and nanocrystallinity
- Continuous in-situ monitoring of pressure and temperature during ball milling
- pmax= 150 bar of hydrogen (smaller pressure ranges with higher resolution available: up to 1-2-5-10-20-50-100 bar)
- Operation time up to 40 h
- Resolution of data acquisition: 40 points/s
- Powerful dedicated software
- USB interface
- Volume of milling vial: 220 ml
- Vial material: hardened steel, swagelok ball valve
Two channel system for simultaneous use of two milling vials