ChemiSorb Auto, a Micromeritics Technology, is a compact, automated and affordable chemisorption analyser for high performance catalyst characterisation in both academic and industrial settings.

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Manufacturer	Micromeritics
Product Series	Chemisorb, a Micromeritics Technology
Measurement principle	Chemisorption
Application	Surface Area & Porosity
Temperature	Ambient to 1000 °C -100 °C to 1000 °C with CryoCooler
Carrier gases	4 inlets: H2, O2, He, Ar, H2/Ar, and more
Analysis (loop) gases	4 inlets: He,H2, CO, O2, N2O, NH3/He, and more

The ChemiSorb Auto, a Micromeritics Technology, is an automated chemisorption analyser designed for precise surface characterisation of catalysts and other chemically active materials. It measures the interaction between a solid surface and gas molecules, particularly focusing on chemical bonding. It plays a crucial role in various industries such as catalysis, material science, and environmental monitoring by providing detailed insights into surface properties and reaction mechanisms.

The ChemiSorb Auto provides core chemisorption capabilities at a price point accessible to academic and industrial labs alike. It offers true unattended operation: load your sample, start the analysis, and walk away in under 5 minutes. Powered by intuitive MicroActive software, ChemiSorb Auto makes it easy for users of all experience levels to run experiments and analyse data.

ChemiSorb Auto provides essential measurements such as metal dispersion, active metal surface area and acid site strength distribution (Lewis/Brønstead acid site distribution). It uses precise techniques such as temperature-programmed desorption (TPD), temperature-programmed oxidation (TPO), temperature-programmed surface reactions (TPSR), and pulse chemisorption to characterise catalysts, adsorbents, and nanoparticles.

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Demonstration Benefits Applications Accessories

ChemiSorb Auto is ideal for laboratories requiring efficient and accurate chemisorption analysis with minimal manual input. Whether you’re working in academia or industry, the ChemiSorb Auto empowers you to qualify catalysts, optimise reactions, and accelerate your research!

Key Features:

High Precision: Achieves ±1% repeatability, ensuring reliable and consistent results.

Ultra-Low Void Volume: Minimises dead space, enhancing sensitivity and accuracy in measurements.

Automated Workflows: Streamlines the analysis process, reducing operator intervention and increasing throughput.

Loop pressure measurement for exact gas dosing and Patented blending valve for automatic multi-point gas calibration.

Dynamic clamshell furnace with rapid cooling and precise temperature control (up to 1000°C) and Highly sensitive linear TCD for accurate peak analysis.

Intuitive MicroActive software for seamless data interpretation and CE certified and safety tested for peace of mind.

Hydrocracking catalysts typically composed of metal sulfides (nickel, tungsten, cobalt, and molybdenum) are used for processing feeds containing polycyclic aromatics that are not suitable for typical catalytic cracking processes.

The water gas shift reaction is an important element in the hydrogen lifecycle and the push toward net zero technologies. The combination of catalysts, often copper-zinc-alumina and iron-chromium, are characterized by TPR and pulse chemisorption maximize activity.

Fischer–Tropsch synthesis converts syngas into sustainable fuels, with cobalt and iron catalysts playing a key role. Chemisorption and TPR techniques help optimize metal dispersion and reducibility, directly enhancing catalytic performance.

Reforming: Catalysts containing platinum, rhenium, tin, etc. on silica, alumina, or silica alumina are used for the production of hydrogen, aromatics, and olefins.

Isomerisation: Catalysts such as small-pore zeolites (mordenite and ZSM-5) containing noble metals (typically platinum) are used to convert linear paraffins to branched paraffins.

Partial Oxidation: Manganese, cobalt, bismuth, iron, copper, and silver catalysts used for the gas-phase oxidation of ammonia, methane, ethylene, and propylene are characterized using: Temperature-programmed oxidation and desorption, heat of desorption & dissociation of oxygen.

Hydrogenation: Catalysts like palladium, nickel, and platinum rely on chemisorption to activate hydrogen and substrate molecules, with techniques like pulse chemisorption and TPR used to fine-tune activity and selectivity.

Catalytic Cracking: Acid catalysts such as zeolites are used to convert large hydrocarbons to gasoline and diesel fuel. The characterization of these materials includes: Ammonia chemisorption and temperature-programmed desorption.

Zeolite Trap

Replaces the cold trap, avoiding the need to create slush baths. Hydrophillic zeolite in a U-tube is placed in-line between the sample and the TCD, adsorbing all water vapour produced during catalyst reduction.

Mass Spectrometer

Provides a direct probe for the identity and quantity of specific reaction products. Includes heated transfer line, trigger cable for remote data acquisition, and data recording/ integration with MicroActive software.

Cryocooler

Enables the start of an analysis at sub-ambient temperature, down to -100ᵒC

MicroPrep

Used to outgas the zeolite trap in-situ, fully regenerating it after saturation from sample prep and TPR experiments.

BET Option

Allows for in-situ BET surface area measurements.

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