The ChemiSorb HTP is a fully automated, high-throughput chemisorption analyzer for characterizing catalysts, metal-supported nanoparticles, and chemically active materials used in sensor applications. Six independent stations running parallel analyses reduce operator intervention and increase lab productivity.
The ChemiSorb HTP is a static manometric chemisorption analyzer. Generally, two adsorption ‘isotherms’ (quantity of gas adsorbed as a function of pressure at constant temperature) are collected at sub-atmospheric pressures: the first representing total adsorption, the second representing reversible adsorption, and the difference between the two representing the irreversible adsorption (i.e. ‘chemisorption’). This technique provides information on the quantity of adsorption sites, from which subsequent calculations may be done for the percent metal dispersion, active metal surface area, size of active particles, and surface acidity of catalyst materials.
Static chemisorption provides the highest level of detailed surface characterization, providing total chemisorption, irreversible (strong) chemisorption, and reversible (weak) chemisorption over the widest range of catalyst chemistries
Six preparation/analysis ports provide high
throughput catalyst characterization
High vacuum, high-resolution low-pressure
transducers provide precise and reproducible results
Up to twelve gases can be connected to
the ChemiSorb
HTP covering many
activation/analyses possibilities
Catalysts activation procedures are made in-situ avoiding
the risk of sample contamination prior the experiment
Independent sample ports maximize versatility;
each reactor has its own furnace working
from ambient to 700 °C
Fully automated operation – including activation,
motor-driven furnaces, and programmed analysis
sequences – guarantee reproducibility and
reduce operator intervention
Catalysts activation procedures are made in-situ avoiding the risk of sample contamination prior the experiment
ChemiSorb HTP features six independent analysis stations with dedicated pressure sensors, mass flow controllers, and temperature control for each analysis station.
Multiple analyses can be performed simultaneously or in parallel on one instrument. This saves time and lab space for busy catalyst operations. 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.
Twelve gas inlet ports provide flexibility to study chemisorption with a variety of probe molecules that can be used in automatically sequenced procedures without operator intervention. Probe many surface chemistries of interest without moving gas bottles or connections, so you can perform the measurements you need without hassle.
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.
| Capacity | 6 sample stations |
| Type | 7 Pt RTD |
| Accuracy | ± 0.02 ºC by keyboard entry |
| Stability | ± 0.1 ºC per month |
| Accuracy | 0.05 cm3 STP, normal doses |
| Voltage | 100/115/230 VAC |
| Power | 1500 VA, maximum (exclusive of vacuum fore pump which is powered separately) |
| Frequency | 50 to 60 Hz |
| 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) |
| Height | 159 cm (62.5 in.) |
| Width | 159 cm (63 in.) |
| Depth | 51 cm (20.2 in.) |
| Weight | 215 kg (475 lb) |
| Type | Six Mass Flow Controller, One per port |
| Range | 0 to 200 sccm (nitrogen equivalent flow rate) |
| Accuracy | ≥ 5% full scale |
| 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 |
| Range | 0 to 950 mmHg |
| Resolution | 0.001 mmHg, |
| Accuracy | Within 0.15% of reading, 1000- and 10-mmHg transducers (Includes nonlinearity, hysteresis and non- repeatability; transducer manufacturer’s specifications.) |
| Range | 0 to 950 mmHg |
| Resolution | 0.001 mmHg, |
| Accuracy | Within 0.15% of reading, 1000- and 10-mmHg transducers (Includes nonlinearity, hysteresis and non- repeatability; transducer manufacturer’s specifications.) |
| Type | Pirani thermal vacuum gauge |
| Range | 0.000375 mmHg to ≥1 mmHg |
| Resolution on screen | 0.0001 mmHg (0.1 microns) |
| 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 |
Provided specifications were valid as taken from available documents at time of publication. These specifications may change without notice and are only provided as a general reference
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