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Our PGM catalysts have different applications in chemical processes such as the hydrogenation of organic intermediates, the purification of terephthalic acid, and the synthesis of hydrogen peroxide, but also in environmental applications like the removal of volatile organic compounds (VOCs) through catalytic oxidation. In particular, the hydrogenation of organic intermediates involves the production of active pharmaceutical ingredients (APIs), fine chemicals (antioxidants, polymers, etc.), flavor and fragrances and in production of chemicals from renewables (fatty acids, sugars, etc.). For all these applications, Chimet is able to supply specific PGM catalysts.
For each type of reaction/functional group, each metal (Palladium, Platinum, Rhodium and Ruthenium) exhibits a characteristic catalytic behavior. A metal is chosen for its ability to promote the desired reaction, but also its inability to promote the unwanted reaction(s). For example, in hydrogenation processes, the catalytic behavior of the PGMs are as follows:
Palladium is the most versatile of the PGMs. Usually, it is the preferred metal for the hydrogenation of alkynes, alkenes, carbonyls in aromatic aldehydes and ketones, nitro compounds, as well as reductive alkylation, hydrogenolysis and hydrodehalogenation reactions.
Platinum is usually preferred for the hydrogenation of alkenes, aliphatic carbonyls, nitro groups, aromatic rings, pyridine rings, as well as reductive alkylation and selective hydrogenation of halonitroaromatics.
Rhodium is used for the hydrogenation of carbocyclic and heterocyclic aromatic rings and alkenes.
Ruthenium is used for the higher pressure hydrogenation of aromatic rings and aliphatic carbonyls.
Mixed PGMs catalysts, available upon request, may provide additional benefits to both activity and selectivity.
Catalysts are made by any of the PGM (Palladium, Platinum, Rhodium and Ruthenium) dispersed in the form of nanoparticles on proper porous supports. Available supports are activated carbon, alumina, silica-alumina, silicon carbide, calcium carbonate, barium sulfate etc.; all of them available in the form of powder or pellets of different morphology. Unsupported catalysts (palladium and platinum oxides, etc.) are also available, as well as salts and metal compounds (palladium chloride, palladium acetate, etc.) which are used in homogeneous catalysis. “Tailor made” catalysts are produced upon request according to the customer’s specific requirements.
The development of more than 30 different characterization analyses and tests, through the strong collaborations with Universities and Research Institutes, enhances the strength of our R&D capabilities. Technical support is available to customers during the development of a synthetic process, supplying the necessary knowledge and through the availability of catalytic test facilities in lab and semi-pilot scale. Chimet specialists are available to promptly assist the customer on site.
The entire production and services are ISO 9001 and ISO 14001 certified.
Chimet’s waste has some of the most innovative and efficient waste disposal systems in the world. Emissions monitoring is conducted in real time and data are available to the public after the validation of ARPAT.