Made to order
- Installation & training on-site setup, gas panel and BELCAT onboarding
- Validated first run NH₃-TPD or H₂ pulse on your own catalyst
Microtrac BELCAT II Catalyst Analyzer – TPD/TPR/TPO & Pulse Chemisorption | –120 to 1200 °C
Fully automated chemisorption analyzer for catalyst characterization — TPD, TPR, TPO, pulse chemisorption and single-point BET on a high-sensitivity 4-element TCD, from –120 to 1200 °C.
- ✔ TPD · TPR · TPO · TPX · TPSR · pulse chemisorption · BET
- ✔ 4-element semi-diffusion TCD · automatic baseline zero
- ✔ –120 °C (CATCryo II) to 1200 °C · heating up to 110 °C/min
- ✔ Lead time: configured to order — request current timeline
What your catalysis lab actually checks
Species, not just peaks
Pair the BELCAT II with the BELMASS II and every TPD or TPR peak comes with a mass spectrum — you see which gas desorbed, not only how much. Acidity, reducibility and metal dispersion by the methods your process and publications cite.
An applications engineer on the line
Method development for TPD, TPR, TPO and pulse chemisorption from engineers who run catalyst and adsorption analysis in-house at Additive Plus. Sub-4h reply, NDA standard.
BELCAT II is a fully automated catalyst analyzer for chemisorption and temperature-programmed studies — TPD, TPR, TPO, pulse chemisorption and single-point BET on a high-sensitivity thermal conductivity detector, from –120 to 1200 °C.
What Is the BELCAT II: Automated Catalyst Characterization
The BELCAT II measures acidity, reducibility, oxidation behaviour, metal dispersion and coke content on solid catalysts. A 4-element semi-diffusion TCD with automatic zero-point adjustment tracks low-concentration effluent gases through programmed temperature ramps, and an optional BELMASS II quadrupole mass spectrometer identifies the evolved species. See full specifications below.
Why catalysis labs choose the BELCAT II
Every temperature-programmed method on one automated bench.
Full method suite
TPD, TPR, TPO, TPX, TPSR and pulse chemisorption plus single-point BET — acidity, reducibility, dispersion and coke on one instrument.
High-sensitivity TCD
A semi-diffusion 4-element thermal conductivity detector with automatic zero-point adjustment holds a stable baseline for small, low-concentration peaks.
Wide temperature window
–120 °C with the CATCryo II option up to 1200 °C; heating to 110 °C/min and a 10-minute cool-down keep long sequences short.
Mass-spec ready
Couple the BELMASS II quadrupole MS for evolved-gas analysis — identify desorbed species during TPD and TPR, not just quantify them.
How Additive Plus delivers it
Configured to your catalyst chemistry, installed and method-supported.
Configure
We specify carrier and mix gas lines, corrosion-resistant options, the CATCryo II cryo unit and BELMASS II coupling to your catalyst chemistry.
Install & train
Installation, gas-panel setup, BELCAT software training and a validated first run — NH₃-TPD or H₂ pulse chemisorption on your own catalyst.
Method support
TPD, TPR, TPO and metal-dispersion method development from engineers who run adsorption and catalyst analysis in-house.
Methods & Operating Range
Analytical scope at a glance — detailed values are in the Specifications tab.
| Parameter | Specification |
|---|---|
| Methods | TPD, TPR, TPO, TPX, TPSR, pulse chemisorption, single-point BET, breakthrough |
| Temperature range | –120 °C (CATCryo II) to 1200 °C |
| Max heating rate | 110 °C/min (50–500 °C) |
| Detector | Semi-diffusion 4-element TCD |
| Sample ports | 1 (triple sample cell) |
| Compatible gases | He, Ar, N₂, O₂, H₂, CO, CO₂, NH₃, N₂O, NO |
Typical applications
Where catalyst structure and reactivity decide the process.
Why Source the BELCAT II Through Additive Plus
- Application-matched configuration — gas lines, corrosion-resistant options, CATCryo II and BELMASS II specified to your chemistry.
- Installation, software training and a validated first run (NH₃-TPD or H₂ pulse) on your own catalyst.
- Method development for TPD, TPR, TPO and metal dispersion from a team that runs catalyst analysis in-house.
- Leasing and financing available for capital lab equipment · <24h response · systems delivered across 23 countries.
| Brand | Microtrac |
| Technology | Chemisorption / temperature-programmed analysis (TPD/TPR/TPO) |
| Certification | CE |
| Weight | 176 lb / 80 kg |
Product videos
Send a representative catalyst and we'll run a TPD or pulse-chemisorption measurement on the BELCAT II in our lab, then walk you through the results.
Other products teams run alongside Microtrac BELCAT II Catalyst Analyzer – TPD/TPR/TPO & Pulse Chemisorption | –120 to 1200 °C
- ✔ Size + shape: sphericity, aspect ratio, symmetry (ISO 13322-2 / 9276-6)
- ✔ Range 0.9 µm–8 mm · dual >5.0 MPixel ZOOM + BASIC cameras, >420 img/s
- ✔ X-Fall gravity, X-Jet air, X-Flow wet dispersion · DIMENSIONS software
- ✔ Lead time: configured to order — request current timeline
Made to order
· Lead time: configured to order — request current timeline
Inline dynamic image analysis for real-time particle size and shape — 30 µm to 30 mm, measured continuously in the process stream so you catch and correct drift before it becomes off-spec product.
- ✔ Inline size + shape in real time · 30 µm–30 mm
- ✔ 100–300 images/s (5 MP) · 32 parameters incl. 3D
- ✔ Self-cleaning · integrates into any process loop
- ✔ Lead time: configured to order — request current timeline
Made to order
· Lead time: configured to order — request current timeline
Compact volumetric gas adsorption analyzer for BET surface area and mesopore distribution — up to four samples in parallel, helium-free, from 0.01 m²/g.
- ✔ Surface area from 0.01 m²/g (N₂) — no krypton needed
- ✔ Pore size 0.7–500 nm (0.35 nm with molecular-probe option)
- ✔ Up to 4 ports, independent 133 kPa transducer per port
- ✔ Lead time: configured to order — request current timeline
Made to order
· Lead time: configured to order — request current timeline
Quadrupole mass spectrometer for evolved-gas analysis — couples to the BELCAT II to identify desorbed and reaction species during TPD, TPR and thermal decomposition, across m/z 1–200.
- ✔ Mass range m/z 1–200 · Faraday cup or SEM detector
- ✔ Selected-ion monitoring on up to 16 channels
- ✔ Couples to BELCAT II for TPD-MS / evolved-gas analysis
- ✔ Lead time: configured to order — request current timeline
Made to order
· Lead time: configured to order — request current timeline
Turn a new alloy into a printed part without leaving the lab. The ATO Lab atomises your own feedstock into spherical powder, the CAMSIZER X2+ measures its size and shape, and the AO Metal A50 prints it with every laser parameter open — no cartridges, no annual licence. Configured to order; lead time on request. Installation and commissioning in the USA: facility and gas planning, start-up and operator training by our US service team.
Made to order
· Lead time on request
Dynamic light scattering (DLS) nanoparticle analyzer with a dip-in external probe — 0.3 nm to 10 µm, measuring size, concentration and molecular weight without cuvettes or dilution.
- ✔ Range 0.3 nm–10 µm · 180° backscatter · FPS model (not PCS)
- ✔ Dip probe: any vessel, one droplet, no consumables
- ✔ Up to 40% concentration, no dilution · in-situ reaction monitoring
- ✔ Lead time: configured to order — request current timeline
Made to order
· Lead time: configured to order — request current timeline
Dedicated volumetric gas adsorption analyzer for BET surface area and micro-to-mesopore distribution — ultra-low pressure to P/P₀ 10⁻⁸, from 0.0005 m²/g with krypton.
- ✔ Surface area from 0.01 m²/g (N₂), 0.0005 m²/g (Kr)
- ✔ Pore size 0.35–500 nm · micropore via HK/SF/NLDFT
- ✔ Ultra-low pressure P/P₀ = 10⁻⁸ · up to 5 ports
- ✔ Lead time: configured to order — request current timeline
Made to order
· Lead time: configured to order — request current timeline
Vacuum degasser for gas adsorption sample preparation — removes moisture and contaminants by vacuum and heat on 3 or 6 ports, so your BELSORP analyzer stays free for measurement.
- ✔ 3 or 6 pretreatment ports · parallel sample prep
- ✔ Vacuum + heat degassing (optional flow + heat)
- ✔ Frees the analyzer — prep while it measures
- ✔ Lead time: configured to order — request current timeline
Made to order
· Lead time: configured to order — request current timelineCommon questions
Don't see yours? Email [email protected] — NDA standard, typical reply within 4 hours.
Which analysis methods does the BELCAT II support?
What temperature range and heating rates does it reach?
How does the BELMASS II mass spectrometer add to the BELCAT II?
What detector does it use and how sensitive is it?
Which gases and sample types can it handle?
Can it measure breakthrough curves for adsorbents?
What lead time and support come with the BELCAT II?
Place your order, or talk to an engineer first
Order Microtrac BELCAT II Catalyst Analyzer – TPD/TPR/TPO & Pulse Chemisorption | –120 to 1200 °C direct, or talk to materials engineer