Water analyzer ChemiSorb Auto

syngasnickelcopper

The Micromeritics ChemiSorb Auto is a compact, fully automated chemisorption analyzer designed to deliver high-precision, repeatable results for heterogeneous catalysts. Whether you're conducting temperature-programmed experiments or pulse chemisorption analyses, the ChemiSorb Auto offers reliable performance, affordable access, and unmatched ease of use – all in a benchtop footprint. Engineered for consistent, reliable chemisorption results Designed to maximize value without compromising performance Intuitive operation and automation enable users of all experience levels to operate quickly and confidently Features: Patented blending valve: allows precise gas blending and multi-point automatic gas calibrations Loop pressure measurement: exact quantities of gas dosed to the sample are known, ensuring repeatability within +/- 1% 8 total gas inlets: four each for carrier and loop gases fed to the system with two high-precision mass flow controllers Optional cryocooler: enables the start of an analysis at sub-ambient temperature, down to -100°C Minimal internal gas volume: assures high resolution, fast detector response, and reduces error when calculating gas volumes Highly sensitive linear thermal conductivity detector (TCD): assures the calibration volume remains constant over the full range of peak amplitudes so the area under the peak is directly proportional to the volume of gas reacted Forced air cooling: cools the furnace temperature rapidly down to near ambient (500°C to 50°C in 30 minutes), reducing analysis time and increasing throughput Dynamic clamshell furnace: provides temperature control up to 1000°C and controlled heating rates from 1-50°C at a linear rate with minimal temperature overshoot Key applications: Hydrocracking (hydrodesulfurization and hydrodenitrogenation): Catalysts composed of metal sulfides (nickel, tungsten, cobalt, and molybdenum) for processing feeds containing polycyclic aromatics. Water-gas shift: Catalysts (copper-zinc-alumina and iron-chromium) characterized by TPR and pulse chemisorption to maximize activity. Fischer-Tropsch synthesis: Converts syngas into sustainable fuels, with cobalt and iron catalysts. Chemisorption and TPR techniques optimize metal dispersion and reducibility. Reforming: Catalysts containing platinum, rhenium, tin, etc. on silica, alumina, or silica alumina for hydrogen, aromatics, and olefins production. Isomerization: Small-pore zeolites (mordenite and ZSM-5) with noble metals (typically platinum) convert linear paraffins to branched paraffins. Partial oxidation: Manganese, cobalt, bismuth, iron, copper, and silver catalysts for gas-phase oxidation of ammonia, methane, ethylene, and propylene, characterized using temperature-programmed oxidation and desorption, heat of desorption & dissociation of oxygen. Hydrogenation: Catalysts like palladium, nickel, and platinum rely on chemisorption to activate hydrogen and substrate molecules, with pulse chemisorption and TPR used to fine-tune activity and selectivity. Catalytic cracking: Acid catalysts such as zeolites convert large hydrocarbons to gasoline and diesel fuel. Characterization includes ammonia chemisorption and temperature-programmed desorption. Accessories: Mass spectrometer: Integrated single quadrupole mass spectrometer with a heated transfer line detects fragments up to 200 amu, syncing with ChemiSorb Auto operations. CryoCooler: Enables experiments at temperatures as low as -100 °C with controlled liquid nitrogen-based cooling. Sampling septum: Connects to the sample exhaust, allowing gas to be drawn via syringe for additional loop volume and gas calibrations. Zeolite trap: Replaces the cold trap, using hydrophilic zeolite in a U-tube to adsorb water vapor during catalyst reduction. B.E.T. option: Allows for in-situ B.E.T. surface area measurements, includes a delay line to broaden peaks and improve accuracy. Why ChemiSorb Auto? Delivers consistent performance for routine chemisorption analyses Minimal dead volume ensures near-instantaneous detector response and repeatability within +/- 1% Ideal for TPR, TPD, TPO, and active surface area (metal dispersion) measurements Simplicity that saves time: True unattended operation: load your sample, start the analysis, and walk away in under 5 minutes Compact, benchtop design fits seamlessly into any lab environment Powered by intuitive MicroActive software, making it easy for users of all experience levels to run experiments and analyze data Affordability without compromise: The ChemiSorb Auto provides core chemisorption capabilities at a price point accessible to academic and industrial labs alike. Specifications: Temperature: Ambient to 1000°C; -100°C to 1000°C with CryoCooler Temperature ramp rates: -100°C to 400°C: up to 100°C/min; 400°C to 600°C: up to 50°C/min; 600°C to 800°C: up to 25°C/min; 800°C to 900°C: up to 10°C/min; 900°C to 1000°C: up to 5°C/min Carrier gases: 4 inlets (H2, O2, He, Ar, H2/Ar, and more) Analysis (loop) gases: 4 inlets (He, H2, CO, O2, N2O, NH3/He, and more) Patents: Patented Blending Valve: Pat No. 10,487,954 Analysis: Pulse chemisorption, temperature-programmed reactions (TPR, TPO, TPD, TPSR), strong chemisorption (reactive metal area, dispersion, crystallite size), active site surface concentration, reduction/oxidation temperatures, acid site strength distribution (Lewis/Brønstead), breakthrough curve measurement, activation energy Options: Cryocooler, detection by mass spectrometry, B.E.T. surface area