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 sieve — A molecular sieve inside an antibiotics container (contents removed). See below for size comparison image … Wikipedia
zeolite — Any of a large family of crystalline metal oxide materials characterized by the presence of extensive regular interconnected pore systems. Most are based on mixtures of aluminum and silicon oxides, while others have phosphorous and other elements … Petroleum refining glossary
Zeolite — Zeolites (Greek, zein , to boil ; lithos , a stone ) are hydrated aluminosilicate minerals and have a micro porous structure. The term was originally coined in the 18th century by a Swedish mineralogist named Axel Fredrik Cronstedt who observed,… … Wikipedia
zeolite — zeolitic /zee euh lit ik/, adj. /zee euh luyt /, n. Mineral. any of a group of hydrated silicates of aluminum with alkali metals, commonly occurring as secondary minerals in cavities in basic volcanic rocks: used for their molecular sieve… … Universalium
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
zeolite — [ zi:əlʌɪt] noun any of a large group of minerals consisting of hydrated aluminosilicates, used as cation exchangers and molecular sieves. Derivatives zeolitic lɪtɪk adjective Origin C18: from Swed. and Ger. zeolit, from Gk zein to boil + lite… … English new terms dictionary
zeolite — ze•o•lite [[t]ˈzi əˌlaɪt[/t]] n. mir any of a group of hydrated aluminosilicate minerals, used as molecular sieves • Etymology: 1770–80; < Gk ze(în) to boil + o + lite ze o•lit′ic ˈlɪt ɪk adj … From formal English to slang
rare earth ultra stable Y zeolite — abbr. REUSY A cracking catalyst component made by ion exchanging rare earth (lanthanide) metals into ultra stable type Y molecular sieves. See: rare earth, USY, type Y zeolite … Petroleum refining glossary
rare earth Y zeolite — abbr. REY A cracking catalyst component made by ion exchanging rare earth (lanthanide) metals into sodium Y molecular sieves. See: rare earth, type Y zeolite … Petroleum refining glossary
