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Alfa Chemistry Catalysts
The activity of a catalyst is a measure of the catalytic ability of a catalyst and is one of the important properties of a catalyst. Industrial production is often expressed in terms of the number of reactants (or products obtained) converted per unit volume or mass of catalyst per unit time. For a specific chemical reaction, the reaction rate constant, activation energy, etc. can also characterize the activity of the catalyst.
- Characterizing the catalytic activity of the catalyst is very important for evaluating the performance of the catalyst. Alfa Chemistry Catalysts can provide customers with professional catalytic activity detection services to help you fully understand your catalyst project.
- We can measure and evaluate catalyst activity through fixed-bed flow reactor, including the conversion rate, selectivity, stability and other properties of various catalysts under fixed-bed system, which is suitable for research fields such as Fischer-Tropsch synthesis reaction and oil hydrogenation reaction.
- We can combine online micro gas chromatographs, infrared analyzers and other equipment to simultaneously analyze reactants and products, or combine other analytical methods such as cyclic voltammetry to assist in analyzing catalyst activity.
- We can analyze and summarize relevant operating data, stakeout data, and online analysis data, and provide catalyst performance evaluation reports.
Fixed Bed System Platform Advantages
Equipment operating range: design temperature 600℃, design pressure 12.5MPa, flow rate 1-10L/min, volume 100ml, constant temperature section 6-42cm, maximum filling volume 10-50ml;The device uses a two-stage or three-stage heating furnace for heating, with a wide range of constant temperature section, fast heating speed, stable response, and convenient disassembly and assembly.
Catalytic Activity Test Cases
- The researchers used a fixed-bed flow reactor to measure the catalytic activity and studied the catalytic activity of the Au-TiO2 system for CO oxidation at different temperatures (30-60 °C). The results showed that the catalytic activity remained unchanged within 36 hours of operation. The catalytic activity is higher than the catalytic activity of Au-TiO2 which is reduced by calcination or hydrogen reduction at high temperature.
Figure 1. CO conversion over Au–TiO2 at different temperature as a function of time on stream in a feed stream containing oxygen and carbon monoxide (O2:CO = 1:2). 
- In order to reveal the effect of the electrochemical promotion of potassium cations (EPOC) on the Pt catalyst in the low-temperature CO oxidation process, the researchers conducted a catalytic activity measurement in a specific quartz reactor. The results show that electrochemical catalytic promotion can be used to improve the performance of catalytic converters at lower temperatures.
Figure 2. Effect of catalyst overpotential (VWR) on both the maximum rate enhancement ratio (ρmax) and the light-off temperature (T50). 
- Kaushik Mallick. (2004). "Supported gold catalysts prepared by in situ reduction technique: preparation, characterization and catalytic activity measurements." Applied Catalysis A: General 259(2): 163–168.
- Antonio de Lucas-Consuegra. (2008). "Electrochemical activation of Pt catalyst by potassium for low temperature CO deep oxidation." Catalysis Communications 9(1): 17-20.
※ Please kindly note that our services are for research use only.