H-Sorb 2600PCT Hydrogen Storage Adsorption Isotherm Analyzer Introduction

Gas adsorption analysis is important in many fields of materials, such as energy storage materials, improved catalysts for petrochemical processing, advanced pharmaceuticals and food industries. At present, there is tremendous interest in the development of innovative materials for the transition to renewable energy. The science of gas adsorption has become particularly critical in the advancement of materials for storing fuel gases such as hydrogen or natural gas, as well as for sequestration of greenhouse gases. 

The H-Sorb 2600PCT high pressure gas adsorption analyzer adopts the volumetric technique principle which consists of dosing a known amount of gas adsorptive into measurement tubes where lying samples (such as zeolites, carbon nanotubes, rocks, catalysts, activated carbons, molecular sieve, hydrides etc. ) to be analyzed. When samples reach equilibrium with the adsorbate gas (such as hydrogen, methane, carbon dioxide, nitrogen, argon, krypton etc.), detailed and comprehensive final equilibrium pressures will be recorded automated by software. These data are used to calculate the quantity of gas adsorbed by samples. 

This measurement procedure automatically repeated by software under given temperature and pressure intervals until finalized the maximum preselected pressure. Finally, each of the equilibrium point volume adsorbed, equilibrium pressure, absolute pressure etc. data are plotted to produce the isotherm. By using the isotherm data, operators can calculate further more information such as Langmuir fitting isotherm, the adsorption rate curve, PCT (pressure-composition-temperature) or PCI (pressure-composition-isotherm) curve etc.

Pressure-Composition Isotherms (PCI) and Pressure-Composition Temperature (PCT) is one of the most informative sorption measurements. The result is a plot of the equilibrium absorbed gas concentration in the material as a function of pressure and temperature.

Gold APP Instruments high pressure and high temperature gas adsorption analyzer H-Sorb 2600PCT adopts static volumetric principle to determine adsorption and desorption isotherms under high pressure (atmospheric to 200Bar) and high temperature (atmospheric to 500 Celsius) with a stainless steel VCR manifolds system, fully automated operation can control system and multi calculation methods, it equips with a special customized extension manifold which can realize a better data for hydrogen adsorption.

H-Sorb 2600PCT Hydrogen Storage Adsorption Isotherm Analyzer Specifications

1. Analysis Method: static volumetric high pressure adsorption principle

2. Versatility: adsorption/desorption isotherms measurement (atmospheric to 500 Celsius), Gibbs supercritical adsorption measurement

3. Data Reduction: PCT(Pressure-Composition-Temperature) or PCI (Pressure-Composition-Isotherm) diagram/curve/isotherm measurement, TPD(temperature program desorption), Langmuir maximum adsorption constant L and adsorption pressure constant B measurement; adsorptive gas density and vapor-liquid equilibrium accuracy calculation under different pressures and temperatures

4. Measuring Ranges: continuous adsorption and desorption measurement from atmospheric to 200Bar pressure (400Bar option)

5. Accuracy: repeatability errors <3%

6. Temperature Range: room temp. to 500 Celsius (-196C point is option), accuracy ±0.1 Celsius

7. Sample Ports: 2 samples analyzing and 2 degassing (4 ports option), stainless-steel micro welding sample tubes, software integrated temperature PID adjustment 

8. Transducer Accuracy: imported high precision transducers, accuracy can reach 0.05% of F.S. (full-scale), long-duration usage stability is 0.025% of F.S.

9. Ultimate Vacuum: mechanical pump 4x10^-2 Pa (3x10^-4 Torr), molecular turbo pump system (1x10^-6 Pa) is optional

10. Adsorbate Gas: high purity H₂ also supports CO₂ /CH₄ /N₂ or others

                                                     sample tube with valve (for H2)                                   stainless steel tube

H-Sorb 2600PCT Hydrogen Storage Adsorption Isotherm Analyzer Features:

1. Control System: imported VCR interface high pressure pneumatic valve can realize auto on-off within 200Bar, sealing performance is top to 1x10^-10 Pa.m³/s, can be used more than 500 million times; programmable logic controller (PLC) system, high integration and sound anti-interference, improve stability and prolong life 

2. Analysis Management: parameters be set by Gold APP Instruments software, fully automated, achieved unattended operation at night; H-Sorb mode is available for accurate control gas charging pressure points, gain ideal data points

3. Manifold System: imported 316L stainless steel thick-walled manifolds, micro welding sealing can reduce dead space largely; metal VCR connection is convenient for installation and uninstallation

4. Safety Measures: H-Sorb asymptotic technology realizes auto gas-charging and degassing, prevents high pressure dangers caused by artificial mis-operation, and also minimizes large differential pressure impact to pressure transducer

H-Sorb 2600PCT Hydrogen Storage Adsorption Isotherm Analyzer Application Fields

Study and research in high temperature and pressure gas adsorption, supercritical gas performance, microporous materials, hydrogen storage materials, carbon dioxide sequestration, coalbed methane, oil exploration, shale gas etc.

Materilas like catalysts, molecular sieves, active carbon, carbon nano-tube, porous carbons, metal organic frameworks (MOFs), fuel cell, 

hydrocarbon, alloys (LaNi5, AB5, ZrV2, ZrCr2, ZrMn2, TiNi, FeTi etc.) and other materials.

PCT curve

PCT adsorption rate curve

TPD curve