Catalyst poisoning is the partial or total deactivation of a catalyst by a chemical compound. Poisoning refers specifically to chemical deactivation,...

inhibitor only hinders the working of a catalyst without changing it, whilst in catalyst poisoning the catalyst undergoes a chemical reaction that is irreversible...

(HC and CO oxidation) catalyst is sufficiently oxygen-saturated. Catalyst poisoning occurs when the catalytic converter is exposed to exhaust containing...

either to bypass the catalyst, or to back-flush the column to vent after elution of CO2. Air or O2. Reports of oxygen poisoning seem to be rather rumors...

binding of the nitrogen is too strong, the catalyst is blocked and the catalytic ability is reduced (self-poisoning). The elements in the periodic table to...

reactivated by combusting the accumulated coke, which is a catalyst poison. Some of the catalyst is irreversibly deactivated by metal contaminants and by...

Secondary poisoning Radiation poisoning, a biology concept Catalyst poisoning, a chemistry concept Neutron poison, a nuclear physics concept Route poisoning, a...

A Lindlar catalyst is a heterogeneous catalyst consisting of palladium deposited on calcium carbonate or barium sulfate then poisoned with various forms...

Purification of the air and sulfur dioxide (SO2) is necessary to avoid catalyst poisoning (i.e. removing catalytic activities). The gas is then washed with...

to resist hydrogenation, the potential coordinating (and therefore catalyst-poisoning) abilities of both substrate and product, and the great diversity...

as a catalyst (/ˈkætəlɪst/). Catalysts are not consumed by the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycles...

fuels, due to their environmental toxicity and tendency to cause catalyst poisoning and corrosion during oil production and refining. Alcohols: Methanol...

catalysts differs from that of the reagents or products. The process contrasts with homogeneous catalysis where the reagents, products and catalyst exist...

LEL), at least 12% oxygen by volume is needed for the oxidation. Catalyst poisoning - because of the direct contact of the gas with the catalytic surface...

with alcoholates or alkoxides. One of the key uses is to act as a catalyst poison in the Rosenmund reduction. It has the IUPAC name of 2,13-dithia-10...

metal-organic chemical vapor deposition. SAFCs have a high tolerance to catalyst poisoning due to the stability of CsH2PO4 at operating temperatures. However...

pressure drop from fouling and general catalyst deactivation. Phosphatidic glassing is an aggressive catalyst poisoning mechanism that will not only plug off...

Paracetamol poisoning, also known as acetaminophen poisoning, is caused by excessive use of the medication paracetamol (acetaminophen). Most people have...

hydrogen sulfide in the hydrogen feed stream of fuel cells to prevent catalyst poisoning and to measure the quality of guard beds used to remove sulfur from...

metals catalysts, as is currently necessary for lower temperature fuel cells such as PEMFCs, and are not vulnerable to carbon monoxide catalyst poisoning. However...

leaching and oxidation are observed far less often in catalysts composed of palladium. Catalyst poisoning can generally be attributed to the COx that forms...

Fuel cell poisoning The lowering of a fuel cell's efficiency due to impurities in the fuel binding to the catalyst. See catalyst poisoning. Fuel cell...

Fluid Catalytic Cracking (RFCC) unit RFCC procedure in a refinery using a catalyst; below: how the explosions in Torrance and Superior occurred Naphtha Hydrogen...

of the fuel cell reactions. It also can reduce the problem of the catalyst poisoning by adsorbed carbon monoxide and it minimizes problems due to electrode...

which can bind to the catalyst. Titanium isopropoxide (Ti(OiPr)4) is commonly used to chelate polar groups to prevent catalyst poisoning and in the case of...

enzymatic biofuel cell is a specific type of fuel cell that uses enzymes as a catalyst to oxidize its fuel, rather than precious metals. Enzymatic biofuel cells...

removal of carbon monoxide (CO) from the fuel cell's feed gas. CO poisons the catalyst of most low-temperature fuel cells. Carbon monoxide is often produced...

fiber growth initiates on the surface of the catalyst particles and continues until catalyst poisoning occurs by impurities in the system. In the fiber...

is comparable with the similar functionality of Platinum catalysts minus the catalyst poisoning, and thus is very efficient. In the case of H2/O2 fuel cells...

is used in place of synthesis gas. Transition metal catalysts are required. Invariably, the catalyst dissolves in the reaction medium, i.e. hydroformylation...