iChem 700 automatic heating chemical adsorption instrument Introduction: The iChem 700 automatic temperature programmed chemical adsorption instrument can be used to perform TPD, TPR, TPO, TPRx, pulse chemical adsorption, catalyst treatment, pulse calibration and dynamic BET specific surface analysis on catalyst materials to determine the pH and acid-base distribution of catalyst materials. , Active metal dispersion, metal and carrier interaction, etc., in addition, an online chromatograph can be configured to continuously monitor the TPRx product qualitatively and quantitatively, and detect the concentration of desorbed gas. Technical features: 1. High temperature heating furnace: the temperature can reach 1200℃, and it has a good heating rate and heat preservation effect. The flushing temperature is less than 2-3°C, and the constant temperature fluctuation is less than 1°C. 2. 3 independent gas sources: carrier gas, processing gas, and analytical gas. 3. 6 high-precision mass flow meters MFC: flow interval can be 0-100sccm (standard), other ranges can be manufactured according to user requirements. 4. 15 gas inlets: there are 5 inlets for carrier gas, processing gas and analysis gas, totaling 15 inlets. 5. TCD Thermal Conductivity Pool Detector: The maximum temperature of the thermal conductivity detector is 200℃, and the constant temperature fluctuation is less than 0.5℃. It is used to measure the amount of gas adsorbed. The four-arm thermal conductivity cell has four identical gold/tungsten wires, which has good stability, precision, linearity and sensitivity, and meets the test sensitivity and chemical compatibility to the greatest extent. 6. Cold trap: A trap filled with desiccant is equipped downstream of the instrument to prevent the sample from condensing before TCD. The cold trap is equipped with an automatic elevator. When the cold trap is required to work, the elevator will automatically rise and fall according to the signal instructions set by the software. 7. 4 electromagnetic six-way valves: used to switch the direction of the gas path, no thermoelectricity will be generated during the switching process, and to ensure the constant temperature of the gas in the system. 8. LOOP ring (analysis) to choose from: 14 kinds of LOOP to choose from, the instrument comes standard with three kinds of LOOP rings (35 microliters, 500 microliters, 1 ml) 9. Saturated steam cylinder: steam adsorption analysis can be carried out, and the internal heat preservation of the instrument ensures that the steam will not condense. The maximum constant temperature of the steam generator is 150℃, and the constant temperature fluctuation is less than 0.5℃. 10. Cooling components: The bottom of the furnace is equipped with an electric fan for air-cooling technology in the half-open state of the furnace body, and the fan speed can be controlled according to the cooling signal program. Makes the temperature drop faster and reduces the time between two experiments. 11. After the iChem 700 automatic chemical adsorption instrument can be connected to the mass spectrometer MS, gas chromatograph GC, flame ion detector FID, infrared spectroscopy IR, etc., the data can be imported into data processing software such as EXCEL to synchronize the frequency of the temperature signal.
Introduction: The iChem 700 automatic temperature programmed chemical adsorption instrument can be used to perform TPD, TPR, TPO, TPRx, pulse chemical adsorption, catalyst treatment, pulse calibration and dynamic BET specific surface analysis on catalyst materials to determine the pH and acid-base distribution of catalyst materials. , Active metal dispersion, metal and carrier interaction, etc., in addition, an online chromatograph can be configured to continuously monitor the TPRx product qualitatively and quantitatively, and detect the concentration of desorbed gas.
