Preferred Label : poison;
Detailed label : poison in catalysis;
IUPAC definition : An inhibitory substance characterized by its propensity to attach very strongly, by
a true chemical bond (e.g. covalent) to the surface atoms or ions constituting the
catalytically active sites. Poisons act in minute quantities. Typical poisons are
S, As, etc. In most cases, activity and/or selectivity cannot be recovered without
a drastic change in operating conditions (most often a regeneration). recovery, if
at all, takes place very slowly and/or only partially.;
Origin ID : P04706;
Automatic exact mappings (from CISMeF team)
- Poison [ICD-11 Extension code]
- See also
An inhibitory substance characterized by its propensity to attach very strongly, by
a true chemical bond (e.g. covalent) to the surface atoms or ions constituting the
catalytically active sites. Poisons act in minute quantities. Typical poisons are
S, As, etc. In most cases, activity and/or selectivity cannot be recovered without
a drastic change in operating conditions (most often a regeneration). recovery, if
at all, takes place very slowly and/or only partially.
