The Micromeritics in-situ Catalyst Characterization System (ICCS) is an advanced catalyst characterization tool that allows the user to study the impact of a reaction on critical parameters such as number of active sites, under precisely controlled, process-representative conditions.
A standalone accessory designed to complement any dynamic laboratory reactor system, such as the Flow Reactors (FR-100 or FR-200), the ICCS adds two new capabilities: Temperature Programmed Analyses (TPx) and Pulse Chemisorption.
These well-known and time-tested techniques may now be performed on a fresh catalyst and then repeated on a used catalyst without removing the material from the reactor. This enables a detailed comparison of the catalyst, notably the number of active sites, before and after use. Users benefit from obtaining both temperature programmed analyses and pulse chemisorption data for the same aliquot of sample used for reaction studies. Performing these analyses in-situ virtually eliminates the possibility of contamination from atmospheric gases and moisture which may damage the active catalyst and compromise data integrity.
The ICCS provides representative in-situ characterization of catalysts, catalyst supports and other materials
at elevated pressure and temperature, with no risk of
exposure to the external environment
Two high performance mass flow controllers for precise, fully automated gas flow control to enable TPx and pulse chemisorption analyses.
Fully contained in-situ testing to allow multiple characterizations of the same catalyst using the same sample.
A high precision Thermal Conductivity Detector (TCD) to monitor changes in the concentration of gases flowing into and out of the sample reactor in real-time
A touch screen, intuitive software and a graphical interface for straight-forward, streamlined operation and the easy visualization and manipulation of alarms, commands and control parameters
A temperature-controlled stainless-steel flow path to ensure an inert and stable operating environment and reduced potential for condensation in the flow path. Two internal temperature control zones may be operated independently
An internal cold trap with additional temperature control zone for the removal of condensable fluids (e.g. water produced during reduction of oxides)
An ultra low volume flow path to minimize peak broadening and significantly enhance peak resolution
Corrosion-resistant detector filaments for durable compatibility with most commonly utilized TPx and pulse chemisorption gases.
Interactive peak editor package to enable researchers to conveniently convert data to information. Adjusting peak boundaries is a matter of simply pointing and clicking.
The typical operation of the ICCS begins with loading of the catalyst into the reactor system. The catalyst may then be characterized by the temperature programmed methods; temperature programmed reduction (TPR) is commonly used for supported metal catalysts while temperature programmed desorption (TPD) may be the best choice for acidic or basic catalysts. The TPx is often followed by pulse chemisorption to determine the number of active sites. This use of TPx and pulse titration provides a description of the fresh (unused) catalyst under representative conditions (notably at elevated pressure).
After performing this initial characterization, a user may then proceed with reaction studies on the exact same sample without adding any additional catalyst or transporting the catalyst to a different device.
Upon deactivation or simply after a prolonged period of testing, the used catalyst may then be analyzed in the same way as the fresh material employing TPx and pulse chemisorption under identical conditions. This strategy provides a method for comparing the key characteristics of the catalyst such as number of active sites before and after use without removing the catalyst from the reactor.
| Tensión | 240 VAC 10 A, single phase |
| Frecuencia | 50 – 60 Hz |
| Potencia | 10 A, single phase |
| Processor | Intel Core I3 or equivalent |
| Operating Systems | Windows 7/8/10 (32/64 bits) |
| RAM | 4 GB |
| Hard Drive | 500 GB |
| Valve Box | Up to 180 ºC |
| Heated Line | Up to 180 ºC |
| Cold Trap | By a Peltier system from -15 ºC up to 70 ºC |
| Operating Pressure | Up to 20 bar(g) max. |
| Loop Volume | 0.5 cc and 1.0 cc |
| Number of Mass Flow Controller | 2 |
| Max. Required Inlet Pressure | 30 bar |
| Flow Range | MFC1 |
| Requirements | Pressure of 30 bar and vent connections with 1/8’’ connection. |
| Altura | 445 mm (17.52 ”) |
| Anchura | 545 mm (21.46 ”) |
| Length | 500 mm (19.69 ”) (without computer) |
| Peso | 40 kg (88.2 lbs.) |
| Temperatura | 10 – 35 ºC operating |
| Humedad | 10 – 60 % without condensation |
| Recommendation | Avoid direct sunlight, and direct cool or hot sources |
Las especificaciones facilitadas eran válidas según los documentos disponibles en el momento de su publicación. Estas especificaciones pueden cambiar sin previo aviso y sólo se proporcionan como referencia general.
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