AutoChem II 2920A Catalyst Characterization Laboratory

an your operation afford to have anything less than thehighest quality and most comprehensive informationabout the surface characteristics of your catalysts?

The AutoChem II 2920 fully automated chemisorption analyzerprovides your laboratory with the ability to conduct a comprehen-sive array of highly precise studies of chemical adsorption andtemperature-programmed reactions. With this single instrumentyou can acquire valuable information about the physical proper-ties of your catalyst, catalyst support, or other materials. It is theinstrument preferred by researchers investigating active metal sur-face area, surface acidity, distribution and strength of active sites,BET surface area, and more. The AutoChem II 2920 performspulse chemisorption, temperature-programmed reduction (TPR),desorption (TPD), oxidation (TPO), and reaction analyses anddoes it automatically. In addition, it also performs single-point

A u t o C h e m I I 2 9 2 0 A Catalyst Characterization Laboratory Enclos

he AutoChem II 2920 was specified and designed bychemisorption practitioners who understand researchers’needs and expectations. The operating interface is designed

to maximize experiment versatility without sacrificing ease of use.

Gas Inlets and ControlEach of the three gas ports (prep, carrier, and analysis) contains fourinlets providing the capability to perform four-gas sequential experi-ments such as TPR/TPO cycle experiments.

The AutoChem II 2920 is equipped with four high-precision, inde-pendently calibrated mass flow controllers providing extremelyaccurate, programmable gas control. The ability to control gas flowwith accuracy assures a stable baseline and accurate determinationsof gas volumes.

DetectorThe AutoChem II 2920’s inno-

vative thermal conductivitydetector (TCD) is capableof detecting minute differ-ences in the concentrationof gases flowing into andout of the sample reactor.The corrosion-resistant fila-

ments can withstand exposureto gases and vapors. The filamentsare operated at constant tempera-ture to prevent thermal runaway,which can destroy filaments inother systems.

Measurements acquired by thedetector feature notablelinearity throughout therange of gas concentra-tions. This means that asingle calibration is oftensufficient for all peaks

regardless of their amplitude.

O P E R A T I O N

T H E C O M P A N YB e h i n d t h e P r o d u c t

ReputationMicromeritics has earned a reputation for manufacturing onlyhigh-quality products in the field of particle technology andfor the high level of support we provide to the users of ourproducts.

Experience and StabilityMicromeritics has been manufacturing particle technologyinstrumentation for over 40 years. We have grown to be one of the world’s largest manufacturers dedicated exclusively tothe field of particle technology, and we continue to grow. Wehave a long, proud history and are well prepared for the future.

Expertise of StaffMicromeritics employs a staff of well-published research andapplications scientists who contribute to the field of particletechnology and support our users in making their own contri-butions. Our scientific staff includes Ph.D. and Masters levelpractitioners who have extensive experience in their respectivefields including physical adsorption, chemical adsorption, particlesizing, and materials sciences.

Support NetworkMicromeritics has a worldwide network of over sixty directoffices and distributor offices staffed with personnel trained in applications and service support. This is our “front line” ofsupport. Behind them is the corporate staff of Micromeriticsexperts. Operations, applications, and service support areavailable by phone, fax, and e-mail, and more likely thannot, in the local language.

High-Quality DataMicromeritics’ instruments are known for producing extremelyhigh-quality measurements. We stand firmly behind our publishedspecifications and will gladly demonstrate the performance ofour products by way of an evaluation analysis on the sample ofyour choice.

Dedication to QualityMicromeritics is certified underthe International Organizationfor Standardization and meetsall requirements under ISO 9001for quality management andquality assurance standards. Our instruments meet the CErequirements of the Europeancommunity.

Award-Winning PerformanceMicromeritics is the recipientof numerous awards and recog-nition for product innovations.Not only do we have animpressive array of productawards, we also have beenawarded recognition for industrysupport and for the exceptionalquality of our operator manuals.

C

T

BET surface area analyses. Use it to study the effects of sinteringon dispersions, the de-activation of catalysts, the percent of metaloxides, the optimum catalyst temperature for maximum productyield, and much more.

Introducing your sample material to this single automated instrument provides your laboratory with data reports from a user-selected and user-defined series of automated analytical protocols, thus allowing multiple experiments to be accomplishedusing the same sample.

Now that you know what the instrument does, allow us to tellyou why Micromeritics’ AutoChem II 2920 does it better.

sed in One Cabinet

he AutoChem II 2920 is controlled by powerful Windows®-based operating software. It provides all the convenient fea-tures you are accustomed to when using Windows-based

programs. Point-and-click operations, pull-down menus, access tomultiple printers and network drives, multitasking capability, andmuch more are featured in the AutoChem II 2920 user interface.In addition the familiar Windows format reduces the timerequired for training new operators, resulting in fast start-up andincreased productivity.

Current users of other Windows-based Micromeritics instrumentswill find a familiar user interface with very similar analysis, datareduction, and reporting, allowing productive use of the instru-ment almost immediately.

Instrument Schematic DisplayThe Instrument Schematic Display provides information on thestatus of the analysis, the availability of analysis and pretreatmentgases and vapors, direction of the gas flow, TCD reading, andmore. In Manual Mode, this screen enables you to control valvesand heat zones manually by simply placing the mouse pointer onthe desired valve or zone and clicking the mouse button.

Analysis Protocol SequencingThe AutoChem II 2920 allows the most complex experimentsand the Micromeritics standard user interface makes them easy.You can select from a number of preprogrammed experiments orcreate your own. To set up and start a customized experiment, yousimply point and click on the pretreatment and analysis task youwish to perform and specify criteria such as temperature ramprates, gas flow rates, and data measurement intervals. You simplydrag them to the desired sequence. Once the analysis protocol isestablished, you start the experiment and the AutoChem II 2920does the rest. No further operator intervention is required. Theoperating software is so flexible you can make modifications tothe analysis protocol at any time, even during an analysis.

Data Reduction and ReportingThe AutoChem II 2920 provides graphic reports for BET surfacearea, pulse chemisorption, heat of adsorption, and more. In addition, it has an integrated GRAMS/32® peak editor packagethat provides peak selection and editing, integration, datasmoothing, rescaling, and overlay capability. This package allowsyou to remove peaks that are of no interest and manipulate thescaling and baselines of desired peaks. In addition, the AutoChemII provides for input of mass spectrometer data files. This allowsyou to use the GRAMS/32 package to manipulate the TCD andmass spectrometer data simultaneously. In short, it provides thehigh level of versatility, reliability, and accuracy required intoday’s research labs.

The reporting feature also provides the capability of plotting twoexternally derived signals against time or sample temperature; forexample, output from a mass spectrometer or gas chromatograph.Numerous plots can be overlaid to assist in comparing variousplots from the same sample analysis or a series of analyses.

The integrated area of the detector peak signal maintains a highlyconstant proportionality to the quantity of gas regardless of themagnitude of the reaction. The detector signal can be zeroedand/or inverted prior to each experiment in the analysis.

FurnaceA clamshell-type furnace can heat the quartz sample reactor up to 1100 °C. The AutoChem II 2920 permits any number of ramprates and sequences to facilitate customized experiments. Theincluded KwikCool feature enables you to cool the furnace temperature rapidly down to near ambient, reducing analysis timeand increasing throughput. With the CryoCooler option, analysistemperatures can be ramped over the range of -70 °C to 1100 °C.

Temperature-Controlled ZonesFour internal temperature-controlled zones can be heated independently of each other to as much as 150 °C. This permitsstudies using condensable vapors by preventing condensation invalves and lines.

Low Internal VolumeThe extremely low volume of the internal plumbing minimizespeak spreading and significantly enhances peak resolution.Furthermore, it reduces the time lag between the sample reactionsand the corresponding detector response.

Gas InjectionAnalysis gas may be introduced to the carrier stream by a pre-cision automated loop. A calibrated, conveniently located sep-tum is also provided through which analysis gas can be injectedby means of a calibrated syringe.

S O F T W A R E

T

Reproducibility and repeatability are important tests to confirmexperimental procedures. Micromeritics’ AutoChem II 2920 generates a detailed sample and analysis information report that can be used to set up the exact experimental conditions on another instrument, or to compare between analyses on thesame instrument to assure conformity. Also featured is an AnalysisLog report that provides a chronological list of each action performed by the instrument during an analysis sequence and may be used for refining analysis methods or even as a diagnosistool for applications difficulties. Reports such as these are expectedfrom a high-quality instrument designed for catalysis research.But, Micromeritics goes beyond what is expected; the AutoChemII 2920 features an internalsystem log which recordsstrategic operation information that can beused by service personnelfor preventive maintenanceand system diagnostics.

A representative set of example reports and additional informationabout the new AutoChemII 2920 is available for yourinspection. The packagemay be requested directlyfrom Micromeritics by faxor phone, by way of ourHome Page, or from yourlocal Micromeritics representative.

The AutoChem II2920 is designed for both laboratoryresearch and productdevelopment.

The AutoChem II 2920 has a Windowsinterface that makes it possible to achieveaccurate results with informative andeasy-to-understand graphics.

♦ Four Heated Zones eliminate possible interaction and/or condensation ininternal lines and valves, and maintain a constant, calculable volume of gasin the injection loop.

♦ Low Internal Volume assures high resolution, fast detector response, andreduces error when calculating gas volumes.

♦ Highly Sensitive Linear TCD assures the calibration volume remains constant over the full range of peak amplitudes so the area under the peak is directly proportional to the volume of gas reacted.

♦ Corrosion-Resistant Detector Filaments are compatible with most destructivegases and reduce the likelihood of filament oxidation.

♦ Four High-precision Mass Flow Controllers provide precise and accurate gascontrol.

♦ KwikCool connects to exterior gas source and provides quick cooling of thefurnace after an analysis, so that another experiment may be started withoutdelay.

♦ Integrated GRAMS/32 Data Reduction and Peak Editing Software provides peak selection and editing, integration, and data smoothing.

♦ Windows Graphical User Interface provides quick learning and easy operation.

♦ Clamshell Furnace heats sample efficiently to 1100 °C and offers easy access to analysis port.

♦ Exhaust Gas Analysis Port allows sampling of analysis gas after it has passed the thermal conductivity detector for analysis by a mass spectrometer,infrared spectroscope, or gas chromatograph. Sampling can be controlled fromthe AutoChem II 2920 operating program.

♦ FlowThru™ Quartz Sample Tubes can be heated to 1100 °C and aredesigned for easy cleaning.

♦ Optional Vapor Generator allows analysis using vaporized liquids in an inert carrier stream.

♦ Optional CryoCooler enables you to start an analysis at subambient temperature.

♦ Mass Spectrometer Port located immediately before the TCD, allows virtually simultaneous detection on both the TCD and the mass spectrometer.

♦ Four gas inlets each for the preparation, carrier, and loop gases permit four-gas sequential experiments, such as TPR/TPO cycles.

♦ Internal gas blending eliminates the need to purchase expensive mixed gases for experiments such as TPR and TPO.

♦ Mass Spectrometer files can be input for simultaneous manipulation of data.

F E A T U R E S

Temperature SystemRange: −100 to 1100 °C with CryoCooler™

option, Ambient to 1100 °C (without CryoCooler)

Selection: Digitally set, 1 °C increments

Ramp Rates: Up to 50 °C per minute within −70 to 500 °C range

Up to 30 °C per minute from 500 to 750 °C range

Up to 10 °C per minute from 750 to 1100 °C range

GasesLoop (Analysis): H2, CO, O2, N2O, NH3,

vapors such as pyridine, water, etc.

Carrier: He, Ar, and other gases

Preparation: H2, O2, He, Ar, and others

Gas Flow RateAll Mass Flow Controllers (MFCs)

Manual Control: 0 to 100 mL/minute*

Automatic 10 to 75 mL/minuteAnalysis:

*Rate for Hydrogen; other gases have a different range.

Gas DeliveryInlet Ports: 4 each for preparation gas, carrier

gas and loop (analysis) gas

Temperature Internal gas lines and valves Control: heated up to 150 °C

Sample TubeType: Fused quartz FlowThru sample tubes,

for use up to 1100 °C, accepts powders and pellets up to 9 mm in diameter

ElectricalVoltage: 85 to 265 VAC

Frequency: 50/60 Hz

Power: 1100 VA, operating, max.

EnvironmentTemperature: 15 to 35 °C operating

0 to 50 °C non-operating

Humidity: 20 to 80% relative, non-condensing

PhysicalHeight: 62 cm (24.5 in.)

Width: 66 cm (26.0 in.)

Depth: 58 cm (22.75 in.)

Weight: 60 kg (130 lbs)

Control Module Minimum RequirementsProcessor: Pentium 333 MHz or equivalent

Operating System: Windows 2000 or XP Professional

Memory: 128 megabytes of RAM

Hard Disk Space: 1 gigabyte

Graphics Card: 800 x 600 super VGA

One CD ROM drive

OptionsVapor GeneratorCryoCooler

FlowThru,™ KwikCool,™ and CryoCooler™ are trademarks of MicromeriticsWindows® is a registered trademark of Microsoft Corporation

GRAMS/32® is a registered trademark of Thermo Galactic Industries Corporation

In keeping with a policy of ongoing product improvement, specifications are subject to change without notice.

S P E C I F I C A T I O N S

One Micromeritics Drive, Norcross, GA 30093-l877, U.S.A.Domestic Sales (770) 662-3633, International Sales (770) 662-3660

Customer Orders (770) 662-3636, Fax: (770) 662-3696Internet Web Site: http://www.micromeritics.com

MICROMERITICS. SETTING THE PACE WORLDWIDE

Micromeritics is approaching a half-century of experience in

providing innovative products to the particle technology marketplace.

Instrumentation developed by Micromeritics has been the recipient of awards

for design excellence on numerous occasions. Our instruments have been

chosen as the standard of performance by many

multi-national corporations. As a result of this, Micromeritics is pleased

to provide products and product support to customers around the globe. The

driving force of our Company is to develop and support

high-quality, high-performance instrumentation of unmatched

accuracy and utility, never losing sight of the primary importance

of satisfying the needs of our customers.

Micromeritics maintains a high level of interest in the needs of the

many industries it serves and aggressively responds to these needs. It is this

response that firmly establishes Micromeritics as one of the world’s

leading suppliers of particle technology instruments.