AutoChem II 2920 Automatic system

AutoChem II 2920 from Micromeritics (USA) is a fully automated system for studying the activity of catalysts. Five types of analysis: temperature-programmed desorption, reduction, oxidation, pulsed chemisorption and BET surface area analysis.

With this instrument you can obtain data on active metal surface area, surface acidity, distribution and strength of active sites, etc. AutoChem II 2920 is also used to obtain the optimum temperature for maximum yield with this catalyst and other studies. The AutoChem II 2920 is more than just a catalyst analyzer. It can be used as a miniature reactor for process and adsorption studies.

AutoChem II 2920 has 12 input gas ports (4 each for preparation, carrier and analysis gases). AutoChem II 2920 is equipped with four high-precision controllers that provide precise, programmable control of gas flows and, accordingly, the volumes of gases used.

Types of analyzes:

AutoChem II 2920 performs a variety of analyzes to determine catalyst productivity for virtually any application:

● Temperature Programmed Desorption (TPD)

● Temperature Programmable Recovery (TPR)

● Temperature Programmed Oxidation (TPO)

● Pulse chemisorption

● BET specific surface determination (single point)

● Programmed temperature reaction

● Catalyst preparation

● Isothermal reactions

Liquid Vapor System:

Special Vapor Generator system (optional) allows vapors of volatile liquids such as pyridine to be used as chemisorbable probe molecules for acid site titration.

Pressurized chemisorption analysis:

AutoChem 2950HP has been specifically designed to carry out pressure chemisorption analysis from atmospheric pressure up to 1000 psi (6.9 MPa) and investigate the behavior of catalysts under conditions similar to real production plants. Standard detector is a high precision, high sensitivity, high linearity and corrosion resistant TPD that can be integrated and connected to an external detector such as a mass spectrometer for selective gas monitoring. Signals are easily synchronized by the MicroActive control software. Autochem II series can be equipped with a range of options to expand your analytical capabilities. Cooling options include the Kwikcooler, the Kwikcool Vortex and the CryoCooler II cryogenic option which extends the temperature range from -100ﾰC to 1100ﾰC.

Features and benefits:

● Separate schemes for sample preparation and analysis

● Prevents the risk of tube and detector contamination if corrosive gases are released during high temperature processing.

● Independent Mass Flow Controllers for Reference and Analytical TCD Channels in Autochem II 2920

● This unique approach allows for fully automatic and accurate quantitative calibration of the TCD signal for TPR, TPO and TPD experiments covering the entire range of reactive gas percentages in the inert carrier at once. Fast, fast, accurate and easy.

● Selectable TCD and filament temperatures

● Long life time as the TCD operates at a constant and selectable temperature, avoiding the risk of fire. Additionally, TCD sensitivity can be improved when testing low metal catalysts by increasing the temperature difference between the filaments and the monolithic block.

● Up to four temperature controlled zones for manifold and valves up to 150 ﾰC

● High versatility and safety to avoid possible point condensation in the analytical setup that could compromise the accuracy of the results.

● Monitoring of up to nine temperature signals

● Better control of temperature monitoring device during operation

● High precision steam generator

● Liquids can be stored at selected temperatures from room temperature to 150ﾰC. Partial vapor pressure created in the carrier remains extremely constant due to the precise temperature control of the patented reflux condenser.

● Provides high resolution, fast detector response and reduces gas volume calculation errors.