catalytic conversion

См. также в других словарях:

• Catalytic reforming — is a chemical process used to convert petroleum refinery naphthas, typically having low octane ratings, into high octane liquid products called reformates which are components of high octane gasoline (also known as petrol). Basically, the process …   Wikipedia

• Catalytic converter — A catalytic converter (colloquially, cat or catcon ) is a device used to reduce the toxicity of emissions from an internal combustion engine. First widely introduced on series production automobiles in the US market for the 1975 model year to… …   Wikipedia

• Catalytic cycle — A catalytic cycle in chemistry is a term for a multistep reaction mechanism that involves a catalyst . The catalytic cycle is the main method for describing the role of catalysts in biochemistry, organometallic chemistry, materials science, etc.… …   Wikipedia

• catalytic reforming — A catalytic process to improve the antiknock quality of low grade naphthas and virgin gasolines by the conversion of naphthenes and paraffins into higher octane aromatics such as benzene, toluene and xylenes …   Petroleum refining glossary

• catalytic converter — noun Date: 1955 an automobile exhaust system component containing a catalyst that causes conversion of harmful gases (as carbon monoxide and uncombusted hydrocarbons) into mostly harmless products (as water and carbon dioxide) …   New Collegiate Dictionary

• Catalytic hydrotreating —   A refining process for treating petroleum fractions from atmospheric or vacuum distillation units (e.g., naphthas, middle distillates, reformer feeds, residual fuel oil, and heavy gas oil) and other petroleum (e.g., cat cracked naphtha,coker… …   Energy terms

• conversion rate — The rate at which a given catalytic converter purifies the exhaust gas stream, governed by various parameters such as operating conditions and converter design …   Dictionary of automotive terms

• Selective catalytic reduction — (SCR) is a means of converting nitrogen oxides, also referred to as chem|NO|x with the aid of a catalyst into diatomic nitrogen, chem|N|2, and water, chem|H|2|O. A gaseous reductant, typically anhydrous ammonia, aqueous ammonia or urea, is added… …   Wikipedia

• Fluid catalytic cracking — (FCC) is the most important conversion process used in petroleum refineries. It is widely used to convert the high boiling hydrocarbon fractions of petroleum crude oils to more valuable gasoline, olefinic gases and other products.cite book|author …   Wikipedia

• Group I catalytic intron — Group I catalytic introns are large self splicing ribozymes. They catalyze their own excision from mRNA, tRNA and rRNA precursors in a wide range of organisms. The core secondary structure consists of nine paired regions (P1 P9). These fold to… …   Wikipedia

• Selective Catalytic Reduction — SCR, pour Selective Catalytic Reduction en Anglais ou Réduction Catalytique Sélective (RCS) en Français, est un sigle désignant une technologie utilisée pour réduire les Oxydes d azotes NOx émis soit par des moteurs a combustion interne, soit par …   Wikipédia en Français