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.).
Alfa Chemistry Catalysts provides customers with tests including but not limited to the following:
Sieving method (20-10000μm) light transmission method (10-9000μm) optical microscope (0.1-10000μm) scanning electron microscope method (0.003-10000μm)
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.
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.
It is analyzed by XRD, TEM, TPR, TA, TG, NMR, EPS, IR, MOSS, XPS and other characterization methods.
Obtained by XPS, AAS, AES, SIMS and other characterization methods.
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.
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.