The AutoChem 2950 HP Chemisorption Analyzer is an automated, bench-top, microreactor system designed for catalyst characterization up to 70 atmospheres (1000 psia). High-quality hardware, a simple-to-use software interface, and a report system that allows users to determine active surface area and activation energy make this bench-top instrument ideal for researchers who want to conduct experiments and characterize their materials at conditions approaching commercial operation.
It can determine catalytic properties such as percent of metal dispersion, active metal surface area, acid strength, surface acidity, distribution of strength of active sites, BET surface area, and more. The AutoChem II 2920 performs pulse chemisorption, temperature-programmed reduction (TPR), desorption (TPD), oxidation (TPO), and reaction analyses and does it automatically.
Typical AutoChem 2950 HP Applications: HPTPR – High pressure TPR to emulate a commercial activation of a supported metal catalyst Fuel cell applications that require reforming hydrocarbon feeds to hydrogen Hydrogen storage applications using mixed metal hydrides that change hydrogen capacity as temperature changes – the user can vary hydrogen pressure to determine storage capacity as a function of pressure.
Simple chemical reactions where the product mix changes as a function of pressure – the AutoChem 2950 HP functions as a microreactor at typical process temperatures and pressures, allowing the user to collect reaction data at commercial conditions
The use of a microreactor is a cost-effective alternative to pilot plants for many development projects. It is also an affordable option for small start-up companies that cannot afford to invest in a pilot plant to demonstrate their process
Model 021 Liquid Nitrogen transfer system
Confirmation of performance is desirable from time to time for every analytical instrument. The need for validation can arise from a change of operators, a peculiar result, an unfamiliar material, or simply from equipment wear and tear. Micromeritics products, with a few exceptions, do not require calibration per se; they derive results from well-established laws utilizing detection of basic parameters such as time, temperature, pressure, mass, and the like. Micromeritics instruments, nevertheless, are no exception to the desirability for periodic performance evaluation, because detectors, like everything else, age, drift, and occasionally fail.
An effective means for detecting operational mistakes or erroneous applications and for assuring consistent, reproducible results is to retain a quantity of one or more appropriate materials with known, well-characterized properties which can be used to test instrument performance. The reference materials subsequently listed by primary property are offered by Micromeritics for this corroborative purpose. Each has been carefully selected to be representative of the parameter, or parameters, for which it is recommended, to be non-hazardous, and to have an extended shelf life.
The lot of material from which each reference portion was extracted has been repeatedly analyzed. This has been done on a number of instruments, by different operators, and, in some cases, even using different techniques. We do not claim our reference materials to be standards. The extensive, blind testing utilizing independent laboratories which would enable us to make such a statement has not been undertaken. We are confident, nevertheless, and so assert, that an instrument giving the result, or results, within the limits specified with each reference material is operating satisfactorily.
When you order a reference material, you will receive with it information on how best to prepare it for analysis (for example, how to disperse it in a liquid, degas time and temperature, and the like), recommended quantity for a test as appropriate for the instrument in question, and other essential data (for example, density, starting diameter, flow path, etc.). Material properties are tabulated along with their limits of accuracy. As appropriate, a typical property trace such as a size distribution, an adsorption and desorption isotherm, or an intrusion and extrusion curve is included.