autosorb iQ series
Micropore physisorption / chemisorption analyzers
These high-sensitivity gas sorption analyzers use proprietary small cold-zone technology for detailed micropore size distributions of up to three samples simultaneously. They perform the most challenging measurements of zeolites, activated carbons, and MOFs, for novel materials research in environmental and industrial applications such as gas storage and supercapacitors. Their internal vacuum pumps and dedicated sample preparation stations minimize bench space. They are available in different configurations as chemisorption units, still with full physisorption capability, for all-in-one catalyst characterization.
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Technical Specifications
| Pressure transducers | |
| XR station | 0.1 torr + 10 torr + 1000 torr |
| MP station | 1 torr + 10 torr + 1000 torr |
| AG station | 1000 torr |
| Pressure accuracy | |
| 0.1 torr, 1 torr | <±0.15 % of reading |
| 10 torr | <±0.12 % of reading |
| 1000 torr | <±0.11 % of full scale |
| Built-in vacuum system | |
| High-vacuum construction | Metal-to-metal seals in critical measurement zones |
| Vacuum system (XR/MP) | Turbo-molecular drag pump and dry diaphragm pump |
| Ultimate vacuum (XR/MP) | 5 x 10⁻¹⁰ mbar (5x10⁻⁸ Pa) (3.75 x 10⁻¹⁰ mm Hg) |
| Vacuum system (AG) | Two-stage rotary oil pump and foreline trap |
| Ultimate vacuum (AG) | <2.5 x 10⁻³ mm Hg (<3.3 x 10⁻³ mbar) |
| Physisorption capabilities | |
| Analysis stations | 1, 2, or 3 |
| Parameters measured | Pore size distribution, pore volume, surface area |
| Adsorbates | N₂, Ar, Kr, CO₂, O₂, H₂, CH₄, etc. |
| Chemisorption capabilities | |
| Analysis stations | 1 |
| Parameters measured | Active (metal) area, dispersion, crystallite size |
| Chemisorbed amount | Combined, reversible (weak), irreversible (strong) |
| Chemisorption monolayer | Extrapolation, Langmuir, Dissociative Langmuir, Freundlich, Temkin |
| Catalyst parameters | Active (metal) area, dispersion, crystallite size |
| Chemisorption enthalpy | Clausius-Clapeyron |
| Cell stem diameter | 6 mm, 12 mm |
| Chemisorption furnace | |
| Type | Ceramic tube furnace with safety heat shield |
| Maximum temperature | 1100 °C |
| Temperature accuracy | 0.1 % of span |
| Temperature stability | ±1 °C |
| Ramp rates | 1 °C to 50 °C per minute |
| Maximum temperature | 1100 °C |
| Furnace cooling | Built-in fan |
| Furnace/lid closure/separation | Automatic |
| Adsorbates | N₂, Ar, Kr, CO₂, O₂, H₂, NH₃, etc. |