Introduction: VDSORB-90i is a basic chemisorber that can realize TPD/TPR/TPO and other experiments. It has the characteristics of small size, high sensitivity, simple operation and high cost performance. It is very suitable for the qualitative analysis of catalysts. VDSorb-90BS is an economical chemisorption instrument. On the premise of ensuring its performance, we have removed other redundant functions and simplified the instrument shape, so that the instrument can perform the qualitative analysis of temperature-programmed chemisorption excellently. Features: 1. "Y" type reactor We customized a "Y" type straight-tube reactor for the reactor. Using the "Y" sample loading feature, the relative position of the catalyst and the reactor can be accurately positioned, ensuring the consistency of each sample loading position. 2. Horizontal integral reactor The reaction furnace adopts a horizontal integral design, which greatly facilitates the disassembly and assembly of the sample tube by engineers. With the strong air cooling technology, the problem of long heat dissipation time of the integral furnace is effectively solved, and the instrument works well. . 3. Groundbreaking sensor technology Thermal Conductivity Detector (TCD) is an important sensor in the system. For this reason, we use a specific technology to meet the needs of high-demand detection: Micro-upgrade the volume of the inner cavity, which greatly improves the detection sensitivity; The inner wall of the cell adopts special inertness The material coating greatly reduces the adsorption probability of trace gases on the inner wall of the cell; SPID (SMART-PID) high-precision fuzzy control algorithm is optimized, so that the temperature accuracy of the TCD cell body is <±0.01℃; 0.5µV~200mV micro-signal linear amplification, real reduction reaction characteristics. 4. Flow Control The accuracy and stability of gas flow control directly affects the stability of the signal. We equip the instrument with a high-precision mass flow controller to ensure the stability of the system. 5. Program temperature The key technology of temperature programming is whether the heating curve can be flat. Through the optimization of the reaction furnace and SPID temperature control technology, we have achieved a smooth temperature rise from RT to 1100 °C to ensure the authenticity and reliability of the experimental results. 6. VDSorb-Station Workstation We simplified the VDSorb-Staion workstation, removed redundant functions, and made the software operation simple and convenient on the basis of satisfying instrument control. Technical parameter: Repeatability: <0.5% Amount of catalyst: 5～200mg Reaction furnace temperature: RT～1100℃ Reactor control accuracy: <0.1℃ Reaction furnace heating rate: 0～100℃/min (RT～500℃) 0～50℃/min（500～800℃） 0～30℃/min（800～1100℃） Reaction furnace heating curve smoothness: <0.3% Gas flow range: 0～100sccm (extendable) Flow Accuracy: <0.5%F.S. Detector Baseline Noise: <30μA Detector baseline drift: <50μA/30min Detector temperature range: RT～250℃ Detector temperature control accuracy: <0.01℃ Cold trap temperature range: -196℃～RT
Introduction: VDSORB-90i is a basic chemisorber that can realize TPD/TPR/TPO and other experiments. It has the characteristics of small size, high sensitivity, simple operation and high cost performance. It is very suitable for the qualitative analysis of catalysts. VDSorb-90BS is an economical chemisorption instrument. On the premise of ensuring its performance, we have removed other redundant functions and simplified the instrument shape, so that the instrument can perform the qualitative analysis of temperature-programmed chemisorption excellently.
