α. 1700s–1800s zeolites.
β. 1700s–1800s zeolyte (irregular), 1700s– zeolite.
单词 | zeolite |
释义 | zeoliten.α. 1700s–1800s zeolites. β. 1700s–1800s zeolyte (irregular), 1700s– zeolite. Geology and Chemistry. Originally: any of certain silicate minerals having the property of swelling up, giving off water, and fusing when heated. In later use more widely: any of a large group of minerals comprising hydrated aluminosilicates of sodium, potassium, calcium, and barium whose crystal structures are open frameworks with channels and spaces which can hold water molecules; (also) any synthetic compound having similar properties or uses.Zeolites can be readily dehydrated (by heating) and rehydrated, and are used as cation exchangers and molecular sieves. Examples of natural zeolites include analcime, chabazite, heulandite, natrolite, stilbite, and thomsonite. ΘΚΠ the world > the earth > minerals > types of mineral > silicates > tectosilicate > [noun] > feldspathoid > zeolite zeolite1770 α. β. 1777 J. Priestley Exper. & Observ. Air III. 39 The sparry zeolyte from the Ferro Isles.1789 R. Kerr tr. A. Lavoisier Elements Chem. 497 Red scintilant zeolite from Edelfors.1803 Edinb. Rev. Jan. 510 This Zeolite, found in the rocks of Edinburgh Castle.1811 T. Dwight Statist. Acct. New Haven I. i. 9 There appear to be several varieties, viz. mealy zeolite, lamellar or foliated, and radiated.1880 S. Haughton Six Lect. Physical Geogr. v. 214 (note) Tabular trap, which..contains abundant zeolites.1880 J. D. Dana Min. 427 Crocalite..is a red zeolite, identical with the bergmannite of Laurvig.1913 J. Murray Ocean ix. 223 Zeolites are represented in the deposits of very deep water..by phillipsite, a silicate of calcium and aluminium.1933 R. S. Weston in Twenty-Five Years Chem. Engin. Progr. (1968) (Amer. Inst. Chem. Engineers) xxiii. 327 The effluent..is then passed through a special zeolite which exchanges sodium for the basic nitrogen in the sewage.1956 E. G. Couzens & V. E. Yarsley Plastics in Service Man 98 The polymer can then be used as a ‘zeolite’ or ion-exchange water-softening agent.1990 Jrnl. Petrol. 31 1203 Petrographically, these basanites are similar to the transitional nephelinites at Bow Hill, although they are richer in zeolite (analcime).2011 W. L. Pohl Econ. Geol. iii. 366/1 Zeolites are also used for filtering oil.1770 G. von Engeström & E. M. da Costa tr. A. F. Cronstedt Ess. Syst. Mineral. 116 If concentrated oil of vitriol is poured on pounded zeolites [Sw. Zeolit], a heat arises. 1777 Dict. Chem. III. X 8 Zeolites. This name is given by Mr. Cronstedt to a stone described by him in the Transactions of the Academy of Sciences at Stockholm for the year 1756, the peculiar properties of which have induced that mineralogist to consider it as forming a distinct order of earths, called zeolites. Compounds General attributive and instrumental. ΚΠ 1842 T. Graham Elements Chem. i. iii. 145 Chabasie and other minerals of the zeolite family. 1880 Maps to accompany Ann. Rep. Dept. Mines New S. Wales 1879 2 The lower of these [sc. flows] is very decomposed, and contains zeolite crystals (Chabasite). 1938 R. Hum Chem. for Engin. Students xxii. 611 The Permutit Process involves the passage of the water through an artificially prepared compound, similar in composition to the natural zeolite mineral. 1987 Nature 29 Oct. 821/2 The large family of possible zeolite structures that can be constructed. 2002 Environmental Health Perspectives 110 1087 (title) Analysis of the biological and chemical reactivity of zeolite-based aluminosilicate fibers and particulates. 2006 V. Smil Transforming 20th Cent. iii. 118 Pressure swing adsorption for oxygen separation uses synthetic zeolite molecular sieves to adsorb selectively water, CO2, and nitrogen. This entry has been updated (OED Third Edition, June 2018; most recently modified version published online March 2022). < |
随便看 |
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。