PRODUCT INTRO

An in-situ reaction cell for X-ray diffraction studies of thermal catalysis at atmospheric pressure. Its reflection geometry accommodates flat powder specimens and can be mounted on the original conventional powder specimen holder of common vertical θ/θ and θ/2θ powder diffractometers without removing the original sample stage or realigning the beam path. A domed polyimide X-ray window provides an unobstructed 2θ scanning range of 5° to 80°. A top-inlet, bottom-outlet gas path directs the flow through the sample bed. Standard 1/16-inch connections allow switching between reducing, oxidizing and reaction atmospheres using an external gas-control system. The thermocouple tip is placed directly in the sample bed to measure its temperature rather than the wall temperature. The cell is suitable for studying catalyst phase evolution, reduction and oxidation processes, and structure–performance relationships.

PRODUCT ADVANTAGES

• Unobstructed scanning: the domed polyimide window has no supporting structures in the 2θ range of 5° to 80°, avoiding loss of diffraction peaks.
• Direct sample-bed measurement: the K-type thermocouple tip is inserted into the bed to measure its temperature rather than the cell wall temperature.
• Mounting without optical realignment: the cell can be fitted to the original powder specimen holder without removing the stage or realigning the beam path.
• Flow-through gas path: the top-inlet, bottom-outlet design directs the reaction gas through the catalyst bed for rapid atmosphere changes.

PRODUCT SPECIFICATIONS

NOTE

Spare polyimide film and a specimen-holder adapter are supplied. The diffractometer model must be confirmed before ordering.