Catalyst Physical Performance Analysis

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Alfa Chemistry Catalysts

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Alfa Chemistry Catalysts can analyze the basic physical properties of catalysts at various aspects, from microscopic physical properties (such as crystal phase composition, surface acidity and alkalinity, etc.) to macroscopic physical properties (such as specific surface area, pore structure, shape and size, etc.).

Services

Alfa Chemistry Catalysts provides customers with tests including but not limited to the following:

• Catalyst density
• Catalyst particle size

Sieving method (20-10000μm) light transmission method (10-9000μm) optical microscope (0.1-10000μm) scanning electron microscope method (0.003-10000μm)

• Pore structure (pore size, pore size distribution, pore volume, porosity)

Porosity can be characterized by adsorption isotherms, usually with nitrogen. In addition to closed pores and macropores (>50 nm), total pore volume and pore size distribution can also be measured.

• Specific surface area test

The specific surface test is to use nitrogen (or helium, which is more expensive) to adsorb the surface at a certain temperature, and calculate the specific surface by the amount of adsorption.

• Phase properties (crystal size, shape, coordination, valence)

It is analyzed by XRD, TEM, TPR, TA, TG, NMR, EPS, IR, MOSS, XPS and other characterization methods.

• Catalyst surface analysis and internal composition analysis (element composition, etc.)

Obtained by XPS, AAS, AES, SIMS and other characterization methods.

• If you have other testing requirements, please contact our professional chemists for consultation.

Catalyst Physical Performance Analysis Process

• Communication Requirements: Understand the items to be tested and determine the scope of testing
• Quotation: Quotation based on testing items and testing requirements
• Signing: Sign contract and confidentiality agreement, start testing
• Test Completion: The test cycle will be changed according to the sample and its test items/methods, please consult a test consultant for details
• Report: Issue a test report and perform post-service

Catalyst Composition Analysis Range

Biocatalysts, desulfurization catalysts, plate catalysts, exhaust purification catalysts, denitration catalysts, photocatalysts, metal catalysts, resin catalysts, palladium-carbon catalysts, spent catalysts, hydrogenation catalysts, nickel catalysts, organic catalysts, platinum catalysts, nano-catalysts, polyurethanes Catalysts, battery catalysts, formaldehyde catalysts, three-way catalysts, etc.

Research Case

Researchers have studied antimony-doped tin oxide (ATO) as a carrier material for IrO2 in a proton exchange membrane water electrolyser (PEMWE). In this work, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to characterize the physical properties of the catalyst. It is found that the BET surface area of the supported catalyst is mainly from IrO2.

Figure 1. The average crystallite size of IrO2 and ATO in IrO2-ATO calculated from the XRD.[1]

Reference

1. Vinod Kumar Puthiyapura. (2014). "Physical and electrochemical evaluation of ATO supported IrO2 catalyst for proton exchange membrane water electrolyser", Journal of Power Sources 269(10): 451-460.