To meet a growing need for temperature-specific measurement capabilities in porous materials characterization, Quantachrome Instruments and Oxford Instruments have collaborated in developing a new cryostat specially designed to provide the precise temperature control required for advanced gas sorption studies on the Autosorb-1. The new cryostat gives researchers the ability to easily perform gas sorption studies at any temperature between 77.4K and 200 K (-320°F and -100°F) using only liquid nitrogen as a cryogen, with >19hr hold time at 87K: unlimited analysis time when refilled.
This accessory will be of particular interest to those researchers developing new porous solids (like MOFs) for gas storage and gas separation applications. Having the ability to measure heats of adsorption from isotherms at different temperatures is critical to further advances in and implementation of these exciting new materials.
This advance in gas sorption capability allows scientists to make measurements across a wide range of temperatures, specifically without the usual restriction of having only a very limited number of discrete temperatures using baths of different cryogenic liquids or melting solids. For example, high resolution micro/mesopore analysis by argon adsorption can be performed at 87 K without expense of liquid argon. Any temperature between 78 and 87K is just as easy to use - and at which no boiling liquefied gas naturally exists!
PowderTech Note #43
"Application of Customized Optistat® DN Cryostat for Advanced Adsorption and Structural Characterization Studies".To receive a copy of Tech Note #43, please send your
request with your full contact details to: qc.support@quantachrome.com
For a list of PowderTech Notes, click here.
| 
