Toxins (catalysis)
Catalysts “live” from the active centers on their surface; these can be tiny platinum particles, acid centers, iron crystal surfaces, liquid vanadium oxide islands, finely dispersed nickel metal, etc. These are where the accelerated reactions occur. If these are no longer available to the gas, the catalyst will no longer function. Typical toxins for active […]
Hybrid service bundles
Our customers need solutions, often a combination of individual services. C&CS is a full-service provider of industrial catalysis and can offer integrated services from:– Expertise (reports, consulting, calculations, laboratories),– Supply of suitable materials (catalysts, adsorbents, specialty products)– Handling in the reactor and plant (filling, emptying, regeneration, recycling, disposal).Hybrid service bundles (hySB) are the answer to […]
Silica gel
Silica gel, also called silica gel, is an amorphous, porous silicon dioxide (SiO₂) with a high specific surface area of typically 600 – 800 m²/g. It is produced by polycondensation of sodium silicate followed by aging, washing and drying. Due to its adsorption properties, silica gel serves as a desiccant, carrier material or chromatography material […]
Catalysis Laboratory
A catalysis laboratory determines the kinetics of a catalyst and its reaction, specifically conversion and selectivity. Important concepts in this context also include activation energy, space velocity dependence, temperature profile, power, lifetime, gas supply, and analytical methods. Due to their thematic proximity, bioelectrical chromatography (BET) and chemisorption are often also performed in the catalysis laboratory. […]
Contact process (production of sulfuric acid)
The contact process is the most important industrial process for the production of sulfuric acid and is one of the most important industrial processes in inorganic chemistry. It is based on the catalytic oxidation of sulfur dioxide (SO₂) to sulfur trioxide (SO₃) in the presence of a C&CS #1394 platinum catalyst for SO2 oxidation. The […]
Oleum
Oleum, also known as fuming sulfuric acid, is a highly concentrated solution of sulfuric acid containing sulfur trioxide (SO₃). The production process takes place via contact oxidation, whereby sulfur dioxide (SO2) is catalytically oxidized to sulfur trioxide (SO3). In such plants, this process can be carried out using the C&CS #1394 platinum catalyst for SO₂ […]
Halogenated hydrocarbons
Halogenated hydrocarbons incl. Hydrogen chlorides (CHCs), hydrofluorocarbons (HFCs), or chlorofluorocarbons (CFCs or CFCs) are synthetic organic compounds that have been and are used in various industrial applications. CFCs consist of carbon, chlorine, fluorine and hydrogen and were widely used for a long time as refrigerants, propellants in spray cans and as solvents. Due to their […]
Dry bed absorption
Dry bed absorption in the semiconductor industry is a safe, passive method for exhaust gas treatment in ion implantation, SiO2 etching, … and as an emergency absorber gas cabinet. It removes toxic substances through chemical reactions on solid adsorbents; key terms here are chemisorption, stoichiometric reaction, and degree of purification. Commonly occurring gases to be […]
Exhaust gas purification (catalytic)
Catalytic exhaust gas purification is a process used in industry to reduce pollutants in exhaust gases through chemical reactions on a catalyst. In this process, harmful substances such as nitrogen oxides (NOₓ), carbon monoxide (CO), volatile organic compounds (VOCs) and particles are converted into less harmful compounds such as nitrogen (N₂), carbon dioxide (CO₂) and […]
Molecular sieve
Molecular sieves belong to the group of zeolites. These materials, consisting of aluminum silicates, are used to separate molecules according to their size or shape. The term “molecular sieve” derives from the ability of these materials to sieve out molecules based on their molecular dimension. A key feature of molecular sieves is their defined pore […]
