molecular sieves

См. также в других словарях:

• molecular sieves — Any of a variety of high surface area solids having pores roughly the size of individual molecules and thus able to adsorb smaller molecules while excluding larger ones. See: zeolite molecular sieves …   Petroleum refining glossary

• molecular sieves — molekuliniai sietai statusas T sritis chemija apibrėžtis Akyti adsorbentai, kurių akutės artimos molekulių matmenims. atitikmenys: angl. molecular sieves rus. молекулярные сита …   Chemijos terminų aiškinamasis žodynas

• zeolite molecular sieves — are crystalline, highly porous materials, which belong to the class of alumino silicates. These crystals are characterized by a three dimensional pore system, with pores of precisely defined diameter. This diameter is in the dimension of the size …   Petroleum refining glossary

• Molecular sieve — A molecular sieve inside an antibiotics container (contents removed). See below for size comparison image …   Wikipedia

• molecular sieve — Chem. a compound with molecule size pores, as some sodium aluminum silicates, that chemically locks molecules in them: used in purification and separation processes. [1925 30] * * * ▪ chemistry       a porous solid, usually a synthetic or a… …   Universalium

• Tamiz molecular — Un tamiz molecular es un material que contiene poros pequeños de un tamaño preciso y uniforme que se usa como agente adsorbente para gases y líquidos. La moléculas que son lo suficientemente pequeñas para pasar a través de los poros son… …   Wikipedia Español

• petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

• separation and purification — ▪ chemistry Introduction       in chemistry, separation of a substance into its components and the removal of impurities. There are a large number of important applications in fields such as medicine and manufacturing. General principles… …   Universalium

• chromatography — chromatographer, n. chromatographic /kreuh mat euh graf ik, kroh meuh teuh /, adj. chromatographically, adv. /kroh meuh tog reuh fee/, n. Chem. the separation of mixtures into their constituents by preferential adsorption by a solid, as a column… …   Universalium

• Natural-gas processing — is a complex industrial process designed to clean raw natural gas by separating impurities and various non methane hydrocarbons and fluids to produce what is known as pipeline quality dry natural gas.[1] Contents 1 Background 2 Types of raw… …   Wikipedia

• Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium