Chemical Adsorption Analyzer

The AutoChem Ⅱ catalyst characterization system provides precise temperature-programmed techniques for catalyst characterization, such as metal dispersion, active metal surface area, number and strength distribution of acid sites, etc. The “Windows” software offers a familiar and easy-to-use user interface and data processing capabilities. Highly flexible user-defined analytical steps can be programmed for temperature control from ambient temperature to 1100°C, as well as for the most complex pretreatment and analytical processes, including TPD, TPR, TPO, TPSR, pulse chemisorption, catalyst pretreatment, isothermal reactions, and BET surface area analysis. The instrument features stainless steel tubing with no “cold spots,” and all multi-position rotary valves, TCD detectors, and tubing are installed in a temperature-controlled zone, ensuring complete thermal tracking, temperature control, and insulation. Four mass flow controllers precisely regulate the sample preparation gas path, two parallel carrier gases (or reference gases), and the analytical gas. The highly sensitive and stable thermal conductivity detector monitors concentration changes in the gas flow, with a longer lifespan for the gold-plated thermal conductivity wire. The FlowThru™ quartz sample tube can be heated up to 1100°C and is easily cleaned. The built-in gas mixer and exhaust gas analysis port can be connected to analytical instruments such as mass spectrometers, infrared spectrometers, and gas chromatographs. The steam generator provides a mixture of liquid vapor and inert gas.