Lab Fully Automatic Chemical Adsorption Analyzer 

Product description:

a. TPD/TPO/TPR/pulse dripping

b. Double electric furnace fully switching

c. Programmable reaction

d. Online mass spectrometry

e. Online cycle life evaluation

Standard function

Program heating (TPD)

Program heating and restore (TPR)

Program heating and oxidation (TPO)

Program heating surface reaction (TPSR)

Program heating vulcanization (TPS)

Pulse dripping

Research on dynamics:

Removal activation energy ED

Demonstration coefficients before factor AD

Disposal number n

Multi -temperature point automatic

Fully automatic program response:

Fully automatic cycle life evaluation

Programmable multi -step reaction

Multi -temperature point automatic execution

Technical parameter

a. Number of heating furnaces: 2 of the procedure heating high temperature furnace, room temperature ~ 1200 ° C, which are backup;

b. Heating furnace cooling method: Dual electric furnace automatic switching in turns+automatic internal air cooling;

c. Program temperature raising rate: 1 ℃/min-100 ℃/min;

d. Analysis of Qi Entrance: 12 Road;

e. Quality Flow Controller (MFC): 3, support the 3 -channel mixed chemical adsorption;

f. Class type of attachment: various non -corrosive gases, corrosive gases, steam, etc.;

g. Real pump: standard, eliminate the impact of the residual gas of the pipeline's dead volume on testing;

h. Steam generator: standard, which can achieve chemical adsorption of steam;

i. Cold trap: standard cold trap, removing low -boiling ingredients such as water vapor and other low -boiling components on the detection of concentration;

j. pulse dripping: Yes, quantitative tube 0.5ml (standard), 1ml, 5ml;

k. Test pressure: standard for normal pressure, select 1MPA/3MPa/10MPa;

l. Double -combustible gas alarm: monitor different areas in real time to prevent the leakage of combustible gas;

m. Sample tube: quartz U -shaped sample tube (comes with temperature reference tube to improve temperature measurement accuracy);

n. Constant temperature system: dual constant temperature (40 ~ 80 ℃, TCD system 60 ~ 110 ℃);

o. External bids: Yes, the proofer is standard 1ml, and other specifications are available;

p. TCD detector dual detection mode: can switch "high sensitivity" and "wide range" mode.Meet the test needs of weak signals and strong signals;

q. Detection system: standard TCD, optional MS, infrared;

Characteristic structure

Technical advantages

a. Fully automatic test: automatic switching of dual heating furnaces, no need to wait for cooling after the pre -processing, directly switch another heating furnace for testing.

Patent name: chemical adsorbing instrument with a dual heating furnace automatic switching device

Patent number: ZL202021370683.7

b. Vacuum qi road rinse: The instrument is built into a vacuum pump. Compared with conventional gas circuit rinse, the vacuum method removes the residual gas in the volume of the death volume is more thorough and efficient.

Patent name: a chemical adsorption instrument with vacuum and vacuum pipelines

Patent number: ZL20220485326.8

c. Temperature reference tube: The temperature sensor is placed in the temperature reference tube of the sample tube (the temperature sensor is in the same environment as the sample) to ensure the high precision of temperature control and temperature measurement;

Patent name: U -sample tube with temperature reference tube

Patent number: ZL202020228716.8

d. Automatic air -cooled cooling system: air -cooled position setting air -cooled pipes and temperature detectors to automatically identify the temperature of the air -cooled heating furnace temperature and automatically turn on the air -cooled cooling to prepare for the next test;

Patent name: a fully automatic chemical adsorption instrument with a built -in duct cooling structure heating furnace

Patent number: ZL202021498649.8

e. Support multi -step continuous automatic testing: fully automatically executes multi -step test solutions based on editing, which is used to evaluate the catalytic performance and chemical adsorption performance of the materials under complex reactions;

f. Support automatic circulation test: Pre -processing+test automatic circulation is used to evaluate the life of materials and chemical adsorption stability;

g. The default high configuration: the default configuration includes the steam generator and the pulse ticking system;

h. Support 3 types of analytical gas hybrid: 3 analysis of gas MFC, support 3 analytical gas hybrid tests;

i. High reliability: international supplier system, core components are imported by original;

Data report

Application case

Application case 1:

Figure 1 and 2 are the test results obtained by the TCD detector and MASS online mass spectrometer when TCD detectors and MASS are connected to the TPD of the molecular screen sample.

Figure 1 TCD spectrum interpretation:

From Figure 1, it is generally believed that three NH3 peaks appeared at 190 ° C, 450 ° C, and 900 ° C; but for the peak of the removing peak near 900 ° C, if it is a peak of NH3, it does not conform to the material of the material. Analysis of the characteristics of scientific researchers.

Figure 2 MASS mass spectrometry interpretation:

It can be seen from Figure 2 that two strong NH3 peaks appear at 190 ° C and 450 ° C. At the same time, with a small amount of H2O, a strong peak at 900 ° C is not the TCD detector NH3 considers NH3. The peak attached, but the peak of H2O, which is in line with the characteristics of the material at the temperature point.

Summary:

① In the TPD process of NH3, with the resharation of H2O, not just NH3 (the source of water may come from the lattice water in the sample);

② The peaks near 190 ° C and 450 ° C in the TCD graph are superimposed by the NH3 and H2O; the peak of the remodeling near 900 ° C is a signal of the water, not the suspected NH3 obtained by the TCD map;

③ The non -positive slope near the peak peaks of 190 ° C and 450 ° C in the TCD graph can be obtained from the mass spectrum diagram. The peak will be a more positive peak).

Application Case 2:

Figure 1 and 2 are the test results obtained by the TCD detector and MASS online mass spectrometer at the same time when testing the TPD of NH3.

Figure 1 TCD spectrum interpretation:

It can be seen from Figure 1 TCD diagram that it is generally believed that 3 NH3 peaks of 3 NH3 appear at 125 ° C, 350 ° C, and 700 ° C, indicating that there are NH3 be attached from the surface of the sample on the surface of the sample.

Figure 2 MASS mass spectrometry interpretation:

It can be seen from Figure 2 mass spectrometry that there is a strong peak of NH3 at 125 ° C. At the same time, a weaker NH3 peak at 350 ° C appears, and no peak peak of NH3 is found in other locations. In addition, there are H2O peaks near 240 ° C, a peak peak of CO2 near 350 ° C, and a remodeling peak with CO at 300 ° C and 700 ° C.

Summary:

Combined with MASS online mass spectrometer spectrometer spectrum found, the strong peaks that appear at 350 ° C in the TCD detector graph are not only NH3, but the remodel of the hybrid gases of NH3, H2O, CO, and CO2. Peak; in addition, the peak of 700 ° C in the TCD detector map is not the peak of the NH3, but the peak of the CO.

It can be seen from the above content that when the catalyst may have a more complicated reaction during testing, only the TCD detector is not enough. It also needs to connect the online mass spectrum or infrared, and monitor the other products that may be generated to obtain a richer test information.