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NEXT GENERATION GRAVIMETRIC SORPTION ANALYZER
XEMIS
www.hidenisochema.com
MBRMembrane Permeation Analyzer
IGAGravimetric Gas & Vapor Sorption Analyzers
Hiden Isochema is a world leader in the design and manufacture of high accuracy sorption instruments for research, development and production applications in materials science and related fields.
Full details on our complete range of products and services are available on our website.
www.hidenisochema.com
XCSClimate Control
Systems
ABRAutomated Breakthrough
Analyzer
IMIHigh Accuracy Hydrogen Storage Analyzer
XEMISNext Generation Gravimetric Sorption Analyzer
IGASORPDynamic Vapor
Sorption Analyzer
The XEMIS is a high accuracy gravimetric sorption analyzer designed for operation with a wide range of gases and vapors at pressures up to 200 bar. Featuring next generation microbalance technology, it allows high resolution measurements on exceptionally small samples.
WIDEST CONTROLLABLE PRESSURE RANGE OF ANY GRAVIMETRIC SORPTION ANALYZERAutomated switching between multiple pressure transducers allows active pressure regulation over 7 orders of magnitude.
UNIQUE EXOSENSING TECHNOLOGY FOR OPERATION WITH AGGRESSIVE SPECIESHiden Isochema’s Exosensing Technology removes sensitive components from the balance chamber and allows safe, reliable operation with flammable, corrosive and toxic gases and vapors.
OPTIMIZED PERFORMANCE FOR SAMPLE SIZES FROM 1 mg TO 5 gOverall baseline stability, combined with symmetric geometry and minimized total buoyancy, offers performance unrivalled in a high pressure sorption analyzer.
ISOTHERM, ISOBAR AND HIGH PRESSURE TGA MEASUREMENTS IN A SINGLE AUTOMATED ANALYZER
XEMIS OVERVIEW
ENHANCED FUNCTIONALITY
All-metal construction with high quality VCR fittings ensures reliable operation at high pressures, with quick, easy sample loading.
EXOSENSING TECHNOLOGY
Sensitive components removed from the
microbalance chamber allows operation with
corrosive species.
TWIN THERMOSTATS
COUNTERWEIGHT SIDE SAMPLE SIDE
THERMOSTATED ENCLOSURE
Intrinsic long term stability without the need for rezeroing or recalibrating captures true sorption behavior and records full sorption kinetic data over extended time periods.
NEXT GENERATION DESIGN
Symmetric geometry and precision design engineered microbalance maximizes sensitivity and minimizes buoyancy.
ADVANCED GAS CONTROL SYSTEM
Featuring active pressure regulation.
THE MICROBALANCE
Exodrive Beam Position Control
Counterweight Hangdown
Sample Hangdown
Exosensor Beam Position Detector
THE IGA METHOD
TIME
PRESSUREPn
UPT
AKE
En
Pressure/gas composition is changed and actively regulated during sorption at the set point Pn.
Equilibrium points are collected and plotted as an isotherm. The IGA method allows consistent and accurate measurements with faster overall process times.
The weight data is analyzed in real time to determine kinetic parameters and simultaneously predict the equilibrium point, En.
WEI
GH
T
En
PRES
SURE
Pn
TIME
The XEMIS uses Hiden Isochema’s unique IGA (Intelligent Gravimetric Analysis) method for simultaneous, automated determination of sorption kinetics and equilibrium isotherms.
KINETIC ANALYSISThe long term balance stability and isobaric operation of the XEMIS allows analysis of the kinetics of sorption and reaction processes over extended timescales.
The minimal variation in the weight reading for an empty sample holder (the orange trace) provides a highly stable baseline reading above which kinetic processes can be accurately characterized.
Isotherm, isobar and highpressure TGA measurementsin a single automated analyzer Exosensing technology forcompatibility withflammable, corrosive andtoxic gases and vapors Symmetric geometry, with ultralow total system buoyancyfor high accuracy measurementsat high pressures
Measurements at temperaturesfrom 77 K to 500 °C overthe full pressure range
Fast and accurate analysis of equilibriaand kinetics using the IGA method
Full automation and advancedprogrammability including multiplegas inlet switching and automatedspecies decontamination
TIME / HOURS0 10 20 30 40 50 60
983.0
983.2
983.4
983.6
983.8
984.0
984.2
984.4
WEI
GH
T / m
g
24 25 26 27 28 29 30-5
0
5
Δw
/ µg
DYNAMIC MIXED GAS MODE
VACUUM VAPOR MODE
XEMIS MODELS
PURE GAS MODE
PURE GAS MODE
DYNAMIC MIXED GAS MODE
XEMIS-001 XEMIS-002 XEMIS-003 XEMIS-100Powerfully combining
the features of the other XEMIS models, the
XEMIS-100 is a flexible mixed gas and vapor
sorption analyzer.
High resolution pure gas and vapor sorption analyzer.
Versatile pure and mixed gas
sorption analyzer.
High resolution pure gas sorption
analyzer.
PURE GAS MODE
VACUUM VAPOR MODE
OPERATING MODES
DYNAMIC VAPOR
OPERATING MODESOPERATING MODES
OPTIONAL
MASS SPECTROMETER
PURE GAS MODE
DYNAMIC VAPOR
OPERATING MODES
OPTIONAL
MASS SPECTROMETER
High resolution pure gas sorption analyzer, for precise characterization of sorption equilibria and kinetics.The XEMIS-001 operates with a wide range of gases including flammable, toxic and corrosives species, and features automatic decontamination and shutdown for rapid, safe sample exchange.
Typical application areas:
Carbon capture and storage
Hydrogen and natural gas storage
Gas solubility in ionic liquids
Nanoporous material characterization
Gas sorption on geological materials
XEMIS-001
High resolution gas and vapor sorption analyzer, with anti-condensation protection up to 40 °C.Up to 4 pressure sensors may be selected, offering active pressure control over an unparalleled range.
Typical application areas:
VOC filtration
Thermochemical energy storage
Toxic gas storage and separation
XEMIS-002
T1T2
T3
P1
P2
P3
P4
Pumps
Thermostat
Valve Driver
Gas Handling
Oil-Free Vacuum System
Exhaust
Admit Handling
Temperature Control Interface
Control Computer
V
T1T2
T3
P1
P2
P3
P4
Pumps
Thermostat
Valve Driver
Gas Handling
Oil-Free Vacuum System
Exhaust
Admit Handling
Temperature Control Interface
Control Computer
V
Versatile pure and mixed gas sorption analyzer with combined control of pressure, flow and gas composition.An optional vapor generator module allows water or organic solvent vapor to be delivered as part of the gas mixture so more complex investigations can be performed.
Typical application areas:
High pressure catalysis
Flue gas desulfurization
Gas-solid reaction kinetics
XEMIS-003
Advanced gravimetric sorption analyzer for high resolution gas and vapor sorption combined with high pressure TGA.Integration with Hiden Analytical’s range of quadrupole mass spectrometers allows analysis of evolved gas for in-situ TGA-MS and related studies.
Typical application areas:
Energy gas storage
High pressure TGA
Polymer membrane characterization
XEMIS-100
T1T2
T3
P1
P2
P3
P4
Pumps
Thermostat
Valve Driver
Gas Handling
Oil-Free Vacuum System
Exhaust
Admit Handling
Temperature Control Interface
Control Computer
V
Flow Handling
T1T2
T3
P1
P2
P3
P4
Pumps
Thermostat
Valve Driver
Gas Handling
Oil-Free Vacuum System
Exhaust
Admit Handling
Temperature Control Interface
Control Computer
V
Flow Handling
EXAMPLE APPLICATION DATA
298 K
348 K
PRESSURE (mbar)
0 200 400 600 800 10000
2
1
4
5
6
7
8
9
3
SO2 A
DSO
RPTI
ON
(mm
ol/g
)
ADSORPTION
DESORPTION
Figure 2: CH4 adsorption by a shale over a range of temperatures.Figure 1: SO2 adsorption by a metal-organic framework (NOTT-300), with kind permission from University of Nottingham, UK.
PRESSURE (bar)
0 20 40 60 80 1000
40
20
80
100
120
140
160
180
60
CH
4 AD
SORP
TIO
N (µ
mol
/g)
298 K
358 K
Figure 4: N2, CO2 and SO2 adsorption isotherms on MFM-300(In) over a range of temperatures and pressures. Reproduced with permission from John Wiley and Sons.
Figure 3: Excess H2 uptake for a 22 mg carbon nanotube, CN4800, using both IGA-003 and XEMIS gravimetric sorption analyzers. Reproduced with permission of The Royal Society of Chemistry.
200 60 80 100 120 140 1600
2
1
4
5
6
7
3
PRESSURE (bar)
EXC
ESS
H2 U
PTAK
E (w
t. %
)
40
IGA DATA
XEMIS DATA UPT
AKE
(mm
ol/g
)
PRESSURE (bar)
SO2
CO2
N2
1E-3 0.01 0.1 1 10 100
02468
1002468
1002468
10273 K283 K288 K293 K298 K
303 K310 K323 K335 K348 K
Figure 6: Dimethylformamide (DMF) adsorption by a metal-organic framework (MOF), with an inset showing a single step kinetic. Data courtesy of Newcastle University, UK.
Figure 5: H2O adsorption on zeolite 13X powder.
20 6 8 10 12 14 262422201816 28-2
2
6
8
10
26
24
22
20
18
16
14
12
28
30
4
PRESSURE (mbar)
H2O
AD
SORP
TIO
N (w
t %)
4
10.0 ˚C Sorption12.5 ˚C Sorption15.0 ˚C Sorption17.5 ˚C Sorption20.0 ˚C Sorption22.5 ˚C Sorption25.0 ˚C Sorption
10 3 4 5 60
5
15
20
10
PRESSURE (mbar)
DM
F AD
SORP
TIO
N (w
t %)
2
ISOTHERMAL SERIES PLOT29.99 °C Sorption 0130 Sequence 020 Scan 01 Dimethylformamide Sorption (y1)
23.2
23
22.8
22.6
22.4
22.2
22
21.8
21.6
21.4
21.2
WEI
GH
T (m
g)
200 700 1200 1700 2200 2700 3200 3700 4200 4700
TIME (mins)
XEMIS TECHNICAL SPECIFICATIONS
SUPPORTHiden Isochema offers unrivalled technical support free of charge, for the lifetime of the instrument.Telephone and email access to our team of highly qualified engineers with a guaranteed response within 24 hours.Full 12 month warranty as standard.A range of service contracts available.
CONTACT USIf you have any questions about XEMIS or any of Hiden Isochema products or services, please give us a call, we will be happy to help.Tel: +44 (0) 1925 244 678 Email: [email protected] Web: www.hidenisochema.com
It is Hiden Isochema’s policy to continually improve product performance and therefore specifications are subject to change.
1 Please refer to Hiden Isochema product specialists for detailed compatibility and laboratory safety advice.
PRESSUREDesign pressure 170 bar (standard), or 200 bar (optional)Accuracy ± 0.04 % of rangeTransducer ranges (up to 4) 1, 10, 20, 50, 200 bar
2, 10, 100 mbarBase vacuum at sample < 10-6 mbarTypical setpoint regulation accuracy ± 0.02 % of rangeProgrammable gas inlets Up to 6Dynamic pressure / flow control Optional (XEMIS-003 and XEMIS-100 models) Full scale flow rate 3-1000 ml/min (as defined by order option)
WEIGHTBalance capacity 5 gWeighing range 100 mg / 200 mgResolution 0.1 µg / 0.2 µg Stability ±1 µg short term (± 5 µg long term)
TEMPERATUREMeasurement range 77 – 773 KTemperature sensors Platinum Resistance Thermometer (Pt100)Measurement accuracy ± 0.1 KTypical setpoint regulation accuracy: Recirculating waterbath ± 0.05 K Furnace options ± 0.1 KLinear ramp TGA option 0.05 – 20 K/min programmableCabinet (balance) temperature stability ± 0.1 KAnti-condensation protection 40 °C (XEMIS-002 and XEMIS-100 models)
MASS SPECTROMETER OPTIONSCoupling method Heated Quartz Inert Capillary (QIC) InletAtomic mass range 1–200 AMU standard (1-300 AMU optional)Detection limit 0.1 to 1 ppm, subject to spectral interference
Better than 20 ppb (Triple Mass Filter option)Detector Dual Faraday/Electron Multiplier
SYSTEM CONSTRUCTIONWetted components All metal Pressure vessel Stainless steel (316L grade) Pressure seals Cajon VCR stainless steel Pressure transducer diaphragms Hastelloy C276 / Inconel 600 Overpressure bursting disc Laser welded stainless steelCorrosive species compatibility Included 1
Vapor species compatibility Included for XEMIS-002 and XEMIS-100 models