ChemiSorb HTP

The ChemiSorb HTP is a fully automated, high-throughput chemisorption analyzer for characterizing catalysts, metal supported nano particles, and chemically active materials used in sensor applications. . A major advantage of this instrument is the six independent stations   running the analyses in parallel to reduce operator intervention and increase lab productivity.

ChemiSorb HTP includes dedicated pressure sensors, mass flow and temperature control  for each analysis station.  ensuring  consistent performance and research grade analysis for a wide range of sample types including powders, pellets, beads, monolith cores, and other morphologies.  Twelve gas inlet ports provide flexibility to study chemisorption with a variety of probe molecules that can be used in automatic sequencing procedures without operator intervention once the sequence is initiated. The precision and speed of the ChemiSorb HTP is ideal for both research and development, and for quality control applications.

The ChemiSorb HTP includes a full suite of software for reporting important parameters used to describe active sites including: the percent of metal dispersion, active metal surface area, crystallite size of the active particles, and surface acidity of catalyst materials.

 

Features and Benefits:

• Six preparation / analysis ports provide high throughput in catalyst characterization 

• Up to twelve gases can be connected to the ChemiSorb HTP covering a large number of activation/analyses possibilities 
• Catalysts activation procedures are made in-situ avoiding the risk of sample contamination prior the experiment 
• Independent sample ports make the ChemiSorb HTP extremely versatile, each reactor has its own furnace working from ambient to 700 °C 
• High vacuum, high-resolution low-pressure transducers provide precise and reproducible results 

• Full automation in activation processes, thanks to motor driven furnaces, and unattended analysis sequences, guarantee utmost reproducibility in the results reducing the operator’s intervention 

Specifications

Analysis

Capacity

6 sample stations

 

Manifold Temperature

Type	7 Pt RTD
Accuracy	± 0.02 ºC by keyboard entry
Stability	± 0.1 ºC per month

 

Gas Dosing

Accuracy	0.05 cm3 STP, normal doses
	0.01 cm3 STP, low-pressure doses

 

Electrical

Voltage	100/115/230 VAC
Power	1500 VA, maximum (exclusive of vacuum fore pump which is powered separately)
Frequency	50 to 60 Hz

 

Operating Environment

Temperature	10 to 35 ºC (50 to 95 ºF), operating; -10 to 55 ºC (14 to 131 ºF), storing or shipping
Humidity	Up to 90% non-condensing (for instrument) 20 to 80% (for computer system)

 

Physical

Height	159 cm (62.5 in.)
Width	159 cm (63 in.)
Depth	51 cm (20.2 in.)
Weight	215 kg (475 lb)

 

Gas Flow Control

Type	Six Mass Flow Controller, One per port
Range	0 to 200 sccm (nitrogen equivalent flow rate)
Accuracy	≥ 5% full scale

 

Furnace System

The ChemiSorb HTP has six independent furnaces, one for each sample port.

Temperature Range	10 ºC above ambient to 700 ºC
Accuracy	± 1.0 ºC
Stability	± 0.5 ºC up to 50 ºC; ± 1.0 ºC from 50 to 700 ºC
Ramp Range	1 to 20 ºC/min up to 500 ºC 1 to 10 ºC from 500 to 700 ºC
Cool down	From 700 to 10 ºC above ambient in less than 60 minutes
Temperature increment	1 ºC

 

Pressure Measurement

Analysis Manifold Transducers:

Range	0 to 950 mmHg
Resolution	0.001 mmHg, 1000-mmHg transducer 0.00001 mmHg, 10-mmHg transducer
Accuracy	Within 0.15% of reading, 1000- and 10-mmHg transducers (Includes nonlinearity, hysteresis and non- repeatability; transducer manufacturer’s specifications.)

 

Sample Port Transducers:

Range	0 to 950 mmHg
Resolution	0.001 mmHg, 1000-mmHg transducer 0.00001 mmHg, 10-mmHg transducer
Accuracy	Within 0.15% of reading, 1000- and 10-mmHg transducers (Includes nonlinearity, hysteresis and non- repeatability; transducer manufacturer’s specifications.)

 

Vacuum Gauge:

Type	Pirani thermal vacuum gauge
Range	0.000375 mmHg to ≥1 mmHg
Resolution on screen	0.0001 mmHg (0.1 microns)

 

Vacuum System:

Diaphragm pump	Two-stage, ultimate vacuum less than 3 mmHg
High-vacuum pump	Less than 3.8 x 10-9 mmHg, measured by pump manufacturer according to Pneurop Standard 5608

 

In keeping with a policy of ongoing product improvement, specifications are subject to change without notice

Technology

Optimum design and efficient utilization of catalysts require a thorough understanding of the surface structure and surface chemistry of the catalytic material. Chemical adsorption analyses can provide much of the information needed to evaluate catalyst materials in the design and production phases, as well as after a period of use.

The ChemiSorb HTP is a fully-automated high-throughput chemisorption analyzer that determines the percent metal dispersion, active metal surface area, size of active particles, and surface acidity of catalyst materials. A major advantage of this instrument is its six analysis stations. Multiple analyses can be run simultaneously or in parallel on one instrument not only saving time for busy catalyst operations, but providing economy of lab space.

The ChemiSorb HTP features a vacuum system and manifold with constantly monitored pressure transducers on each of its six analysis stations. Each port is also equipped with a furnace enabling independent control of sample temperature and ramping from 10 ºC above ambient to 700 ºC. The temperature is recorded with each equilibrium pressure to provide the highest quality isotherms possible. An equilibration option allows the user to specify different equilibration times. A mass flow controller is installed in each port to ensure accurate and reproducible flow through the sample. Up to twelve different gases can be attached to the ChemiSorb HTP simultaneously.

Degas/sample preparation is done in-situ prior to analysis. Samples may be added or removed from each station without disturbing the treatment of other samples undergoing preparation or analysis. The instrument features long unattended analysis times and a high-throughput mode that allows the user to start multiple parallel analyses.

The ChemiSorb HTP analysis program operates in a Windows® environment. This makes operation of the analyzer easier and allows the user to run other applications while an automatic operation is in progress. The report system provided in the analysis program allows the user to manipulate and customize reports in a variety of ways. Zoom in on portions of the graphs or shift the axes to examine fine details. Graphs and data can be copied to the clipboard and pasted into other applications. Reports can be customized with a choice of fonts and a company logo added to the report header.

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