ASAP 2420

Micromeritics
ASAP 2420

Overview ASAP 2420: Accelerated Surface Area and Porosimetry System

 

Micromeritics ASAP® 2420 Accelerated Surface Area and Porosimetry System uses the gas sorption technique to generate high-quality data for applications that require high performance/high sample throughput. Standard features include six independently operated analysis ports and a programmable and fully automated sample preparation module with twelve independently operated ports.

Features

High Performance – High Throughput

The ASAP 2420 system is designed to help today’s busy laboratories expand their work flow while providing highly-accurate and precise surface area and porosimetry data. High-performance and versatile analysis and sample preparation systems are included in the same instrument.

Advantages:

✔ Fully automated analyses

✔ High throughput with six independent analysis stations

✔ Each analysis port has a dedicated analysis and P0 pressure transducer

✔ Twelve independently controlled degas ports

✔ Evacuation rate precisely regulated by a servo valve

✔ BET surface area measurements in as little as 30 minutes

✔ Dosing options of maximum volume increment or dosing over specified pressure ranges

✔ Analysis temperature can be entered, calculated, or measured

✔ Equilibration option allows user to specify equilibration times for different parts of the isotherm

✔ Low surface area option with five independent analysis ports

✔ Windows-driven software

Advantages:

 Fully automated analyses

 High throughput with six independent analysis stations

 Each analysis port has a dedicated analysis and P0 pressure transducer

 Twelve independently controlled degas ports

 Evacuation rate precisely regulated by a servo valve

 BET surface area measurements in as little as 30 minutes

✔ Dosing options of maximum volume increment or dosing over specified pressure ranges

✔ Analysis temperature can be entered, calculated, or measured

✔ Equilibration option allows user to specify equilibration times for different parts of the isotherm

✔ Low surface area option with five independent analysis ports

✔ Windows-driven software

 

 

Advantages:

✔ Fully automated analyses

✔ High throughput with six independent analysis stations

✔ Each analysis port has a dedicated analysis and P0 pressure transducer

✔ Twelve independently controlled degas ports

✔ Evacuation rate precisely regulated by a servo valve

✔ BET surface area measurements in as little as 30 minutes

✔ Dosing options of maximum volume increment or dosing over specified pressure ranges

✔ Analysis temperature can be entered, calculated, or measured

✔ Equilibration option allows user to specify equilibration times for different parts of the isotherm

✔ Low surface area option with five independent analysis ports

✔ Windows-driven software

ASAP 2420 Applications

Typical ASAP 2420 Applications

Pharmaceuticals – Surface area and porosity play major roles in the purification, processing, blending, tableting, and packaging of pharmaceutical products as well as their useful shelf life, dissolution rate, and bio-availability.

Ceramics – Surface area and porosity affect the curing and bonding of greenware and influence strength, texture, appearance, and density of finished goods. The surface area of glazes and glass frits affects shrinkage, crazing, and crawling.

Adsorbents – Knowledge of surface area, total pore volume, and pore size distribution is important for quality control of industrial adsorbents and in the development of separation processes. Surface area and porosity characteristics affect the selectivity of an adsorbent.

Activated Carbons – Surface area and porosity must be optimized within narrow ranges to accomplish gasoline vapor recovery in automobiles, solvent recovery in painting operations, or pollution controls in wastewater management.

Carbon Black – The wear lifetime, traction, and performance of tires are related to the surface area of carbon blacks used in their production.

Fuel Cells – Fuel cell electrodes require high surface area with controlled porosity to produce optimum power density

Catalyst  – The active surface area and pore structure of catalysts influence production rates. Limiting the pore size allows only molecules of desired sizes to enter and exit, creating a selective catalyst that will produce primarily the desired product.

Paints and Coatings – The surface area of a pigment or filler influences the gloss, texture, color, color saturation, brightness,solids content, and film adhesion properties. The porosity of a print media coating is important in offset printing where it affects blistering, ink receptivity, and ink holdout.

Projectile Propellant – The burn rate of propellants is a function of surface area Too high a rate can be dangerous; too low a rate can cause malfunction and inaccuracy.

Medical Implants – Controlling the porosity of artificial bone allows it to imitate real bone that the body will accept and allow tissue to be grown around it.

Electronics – By selecting high surface area material with carefully designed pore networks, manufacturers of super-capacitors can minimize the use of costly raw materials while providing more exposed surface area for storage of charge.

Cosmetics – Surface area is often used by cosmetic manufacturers as a predictor of particle size when agglomeration tendencies of the fine powders make analysis with a particle-sizing instrument difficult.

Aerospace – Surface area and porosity of heat shields and insulating materials affect weight and function.

Geoscience – Porosity is important in groundwater hydrology and petroleum exploration because it relates to the quantity of fluid that a structure can contain as well as how much effort will be required to extract it.

Nanotubes– Nanotube surface area and microporosity are used to predict the capacity of a material to store hydrogen.

 

ASAP 2420 Software and Data Presentations

Operating Software

The ASAP 2420 Windows interface provides a familiar environment for the user. It is easy to collect, organize, archive, and reduce raw data, and store standardized sample information for later use. The reports may be generated to screen, paper, or data transfer channels. Cut-and-paste graphics, scalable-and editable graphs, and customized reports are easily generated.

In addition to controlling the instrument’s operation, the Windows software also reduces the raw data collected during analysis. The reduced data can be reviewed or printed in a variety of easy-to-interpret tabular and graphical reports.

Reports

  • Single-point and multi-point BET surface area
  • Total pore volume
  • Langmuir surface area and Isotherm reports
  • t-PlotHarkins and Jura Thickness equation
    – Halsey Thickness equation
    – Carbon STSA
    – Broekhoff-de Boer
    – Kruk-Jaroniec-Sayari
  • BJH adsorption and desorption
    – Standard
    -Kruk-Jaroniec-Sayari correction
  • Mesopore and Macropore
    – Volume and area distributions by pore size
  • MP-Method
  • DFT pore size
  • DFT surface energy
  • Summary report

The ASAP 2420 includes long-life Dewars to allow convenient analysis of porous materials and determination of pore size distributions. The ASAP 2420 includes a full suite of options for characterizing porosity including advanced options for BJH calculations. An example pore size distribution for an amorphous silica alumina is shown above.

Reports Selection Screen

Both mesoporous and microporous samples may be characterized using the convenient built-in t-plot reports. An example t-plot analysis illustrates the graphical and statistical reports that are easily generated. The ASAP 2420 also includes an extensive list of statistical t-curves as well as the use of reference t-curves. These options provide users with flexibility to use traditional and advanced solutions for their material characterizations.

The ASAP 2420 “High Throughput” analysis allows users to start up to six analyses simultaneously. The overlaid results from six samples of high surface area silica alumina are shown here.

The ASAP 2420 includes Windows- compatible software. This advanced instrument operation software features a full graphical user interface that displays the instrument operations and a simple-to-use report system that includes many standard and advanced reports for the characterization of powders and porous materials.

A standard feature of the ASAP 2420 is the integrated twelve-station degas system. Users may prepare up to twelve samples simultaneously. The sample degas procedure is software-controlled and allows easy-to-specify parameters for custom degas and sample preparation. User-defined evacuation rates and temperature ramps are provided to support even the most difficult-to-prepare samples.

 

Surface Area Software Products:

DataMaster™ and DFT Plus® Data Reduction Technique 

Micromeritics introduces DataMaster™, an offline Windows™-based software package, that can be used to generate classical or micropore data reductions with data collected from Micromeritics’ gas adsorption analyzers. Data reduction can be performed on computers other than the one controlling the instruments, in a remote office or other location, using data stored on a disk or network.

 

DFT® Plus Data Reduction Package (NLDFT)

DFT (Density Functional Theory / NLDFT) describes the gas adsorption process at the fluid-solid interface. It provides a method by which the total experimental isotherm can be utilized to determine both microporosity and mesoporosity as a continuous distribution of pore volume with respect to pore size. Conventional data reduction methods apply to particular regions of the isotherm and require transitions to other methods when moving between these regions. Since DFT (NLDFT) provides a continuous distribution, there is a smooth transition between regions and all data are used.
Free physisorption data analysis software:

Physi ViewCalc 
The Physi ViewCalc tool is an Excel spreadsheet that calculates BET surface area, Langmuir surface area, t-plot micropore volume, t-plot external surface area, and includes many simple to use graphical reports. This interactive spreadsheet allows users to overlay adsorption isotherms and rapidly calculate BET surface area. The Physi ViewCalc.xls tool also enables you to reduce data obtained from measurements of physical adsorption isotherms and to produce custom reports of the analytical results.

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