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Understanding the reaction kinetics of a given catalyst is important, but it is not always the final word in catalyst characterization.
It is often important to assess various physical properties in full, from total surface area to catalyst dispersion.
These properties underlie the complex dynamics of catalytic materials by determining the number of reaction sites, thus catalytic activity. Hiden Analytical supplies a range of gas analysis and microreactor systems suitable for elucidating the physical properties of your catalysts.
Catalyst Characterisation Techniques
Temperature Programmed Desorption, Reduction & Oxidation
The surface properties of heterogeneous catalysts can be probed using a range of temperature-programmed profiles, typically desorption (TPD), reduction (TPR), or oxidation (TPO). Typically, a high sensitivity mass spectrometer is coupled with a microreactor or a vacuum chamber with a heated stage. Catalysts are subjected to a linear temperature ramp while the spectrometer continuously detects changes in the measuring environment. For example: It is possible to saturate a catalyst surface with a probe molecule like ammonia and observe the rate of desorption as a function of temperature and time.
Catalyst characterization systems with pulse chemisorption (PCS) mode are based on the same basic principles as the above, with the added ability of repeatedly exposing catalysts to doses of reactive gas species through the primary stream. This enables researchers to carry out detailed investigations of catalytic activity by injecting specific sorbates at key catalytic stages, such as partial decomposition or oxidation.
Catalyst Characterisation with Hiden Analytical
Hiden Analytical supplies a range of quadrupole mass spectrometers and specialized catalyst characterization systems with built-in TPD, TPR, TPO and PCS modes. Contact us today if you would like more information about our product lines and specifications.
Hiden CATLAB Integrated Microreactor-Mass Spectrometer for Reaction Testing, TPD/R/O and Pulse Chemisorption
Hiden HPR-20 R&D for Advanced Research
Hiden HPR-20 EGA for evolved gas analysis in TGA-MS
Hiden HPR-20 TMS Transient MS for Fast Event Gas Analysis
Mass Spectrometers for Residual Gas Analysis – RGA | For Applications in a Vacuum Environment
Hiden HPR-60 Molecular Beam Mass Spectrometer (MBMS) for the quantitative analysis of reactive gas species (Introduction)
Hiden HPR-60 Molecular Beam Mass Spectrometer (MBMS) for the quantitative analysis of reactive gas species (Applications)
Operando Investigation of Intermediate Species in Non-Oxidative Methane Coupling by Non-thermal RF Plasma
A TPD-MS Study of Novel Hydrogen Storage Materials
Application of Pd Catalysts for the Hydrogenation of Nitriles
Cathode Catalyst Degradation in PEM Fuel Cells
Gas Phase Hydrogenation of 1,3-Pentadine, an FTIR Study
New Mesoporous Silica Supported Nickel Catalysts for Biomass Conversion
Plasma Modification of Catalysts Using a Dielectric Barrier Discharge
Plasma Modified Nickel Catalysts for Biomass Conversion
Reaction of Steam and Methane over Novel YSZ-LaB6 Composities and Nickel-YSZ Cermets
Reaction Studies of a Combined Plasma Catalyst Reactor
Excited-State and Charge-Carrier Dynamics in Binary Conjugated Polymer Dots towards Efficient Photocatalytic Hydrogen Evolution 2.60 MB 1 downloadsExcited-State and Charge-Carrier Dynamics in Binary Conjugated Polymer Dots towards...
Selective Photocatalytic Reduction of CO2-to-CO in Water using a Polymeric Carbon Nitride Quantum Dot/Fe-Porphyrin Hybrid Assembly 1.67 MB 1 downloadsSelective Photocatalytic Reduction of CO2-to-CO in Water using a Polymeric Carbon...
Activity Enhancement of Defective Carbon Nitride for Photocatalytic Ammonia Generation by Modification with Pyrite 2.77 MB 2 downloadsActivity Enhancement of Defective Carbon Nitride for Photocatalytic Ammonia Generation...
A Study of the Key Factors on Production of Graphene Materials from Fe-Lignin Nanocomposites through a Molecular Cracking and Welding (MCW) Method 8.88 MB 1 downloadsA Study of the Key Factors on Production of Graphene Materials from Fe-Lignin Nanocomposites...
The electronic structure, surface properties, and in situ N2O decomposition of mechanochemically synthesised LaMnO3 5.92 MB 2 downloadsThe electronic structure, surface properties, and in situ N2O decomposition of...
Study on NO selective adsorption performance of Rh/MOF-177 1.01 MB 12 downloadsStudy on NO selective adsorption performance of Rh/MOF-177 ...
Mechanochemical defect engineering of HKUST-1 and impact of the resulting defects on carbon dioxide sorption and catalytic cyclopropanation† 1.01 MB 1 downloadsMechanochemical defect engineering of HKUST-1 and impact of the resulting defects...
Effect of Precious Metals on NO Reduction by CO in Oxidative Conditions 2.89 MB 11 downloadsEffect of Precious Metals on NO Reduction by CO in Oxidative Conditions ...
On demand production of ethers or alcohols from furfural and HMF by selecting the composition of a Zr/Si catalyst 4.79 MB 1 downloadsOn demand production of ethers or alcohols from furfural and HMF by selecting...
Original Method to Predict and Monitor Carbon Deposition on Ni-Based Catalysts During Dry Reforming of Methane 2.18 MB 1 downloadsOriginal Method to Predict and Monitor Carbon Deposition on Ni-Based Catalysts...