New generation fully automatic surface area and pore size analyzer

Rise-1003Fully automatic surface area and porosity analyzer

1、 Instrument Introduction:

New generation fully automatic surface area and pore size analyzerReferring to international standards ISO9277, ISO15901, and national standard GB/T 19587, based on the principle of static capacity measurement, the adsorption desorption process is tested through mass balance equation, static gas equilibrium, and pressure measurement. The testing process is carried out at liquid nitrogen temperature. After a known amount of gas is filled into the sample tube, it will cause a pressure drop. Therefore, the molar mass of the adsorbed gas at adsorption equilibrium can be calculated. By measuring the equilibrium adsorption capacity, the theoretical model is used to determine the single point and multi-point BET specific surface area and Langmuir specific surface area of the tested sample; Volume and area distribution of BJH mesopores and macropores, total pore volume; T-plot micropore volume and surface area, Dubinin Astakhov micropore distribution, Horvath―Kawazoe、 SF LawMicroporous distribution, MPlawMicroporous distribution; Non local density function theory (NLDFT) and Monte Carlo (GCMC) aperture distribution model parameters.

Reliable guarantee of test data

The rationality of connecting pipelines, vacuum pumping capability, sensitivity, accuracy, and number of sensors, the degree of automation of instruments, and the number of digital models for different samples are important criteria for judging the quality of instruments.

Modular pneumatic design

New generation fully automatic surface area and pore size analyzerIntroduced advanced design concepts from today's world and adopted customizationThe modular all stainless steel vacuum air circuit design and advanced anti leakage and pollution-free measures ensure the realization of high vacuum and avoid the disadvantages of easy leakage due to too many connecting pipeline joints.

constant temperature

The independently developed aerospace grade Dewar flaskThe internal exquisite structural design ensures a constant temperature of the tested sample while avoiding the defect of fragile and immovable glass Dewar flasks.

High precision sensors

Multiple high-precision sensors and 22 bit AD conversion devices ensure the accuracy of specific surface area and aperture calculations.

Advanced theoretical models

Its advanced non local density function theory (NLDFT) and Monte Carlo (GCMC) pore size distribution model have established its position in China's specific surface area and porosity analyzer industry, and it is also in an advantageous position internationallylevel

Automation of operations

The adsorption and desorption processes are all computer-controlled and do not require manual operation.

2、 Technical features:

1. Single point and multi-point BET specific surface area, Langmuir specific surface area

2. BJH mesopore, macropore volume, area distribution, total pore volume

3. T-plot micropore volume and surface area,

Dubinin Astakhov micropore analysis,

Horvath Kawazoe, SF micropore analysis,

MP micropore analysis;

4. Non local density function theory (NLDFT) and Monte Carlo (GCMC) aperture analysis

5. True density test

3、 Technical parameters:

1Specific surface area: 0.0001㎡/g to no upper limit

2. Aperture analysis range: 3.5 to 5000 angstroms

3. Test principle: Low temperature nitrogen physical adsorption (static capacity method)

4. Adsorbed gas: Non corrosive gases such as nitrogen

5. Independent P0 saturation pressure test tube, P/P0 range 1 × 10-8-0.998

6. Pressure and temperature measurement:

Imported absolute pressure sensor 0-133KPa, accuracy 0.1%, 6 pieces.

Temperature sensor: PT-100, accuracy 0.1 ℃ 1 piece

7. Dewar flask: 2L, made of aviation aluminum material, avoiding the defect of being fragile and difficult to move.

8. Vacuum pump: imported two-stage mechanical pump+molecular pump

9. Ultimate vacuum degree: 1.0x10-8 Torr

10. Measurement software: determination of adsorption/desorption isotherms

11. There are 3 analysis stations and 3 degassing stations, with a degassing temperature of up to 400 ° C. The analysis stations are immersed in a Dewar flask for simultaneous analysis to ensure small dead volume and improve analysis accuracy. Three degassing positions are located in the same soft heating package, and the analysis position and degassing position are independent of each other.

Output report:

Direct printing and EXCEL output of adsorption desorption isotherms, BET specific surface area, Langmuir specific surface area, t-plot micropore volume, BJH pore volume, pore area, total pore volume, total pore area, Dbinin Astakhov, Horvath Kawazoe, SF, MP micropore analysis, NLDFT/GCMC pore size distribution, and review report.

Application scope:

Research and product testing of various materials, including measuring zeolites, molecular sieves, silica, alumina, soil, clay, catalysts, organic metal compound skeleton structures, and other materials.