水泥水化相Ca5Si6O18H2·4H2O的阳离子交换研究

Reactivity of Solids Pub Date : 1989-08-01 DOI:10.1016/0168-7336(89)80039-7

N. Labhsetwar, O.P. Shrivastava

{"title":"水泥水化相Ca5Si6O18H2·4H2O的阳离子交换研究","authors":"N. Labhsetwar, O.P. Shrivastava","doi":"10.1016/0168-7336(89)80039-7","DOIUrl":null,"url":null,"abstract":"<div>Recently it has been established that 11 Å tobermorite (a calcium silicate hydrate, closely related to Ca5Si6O18H2·4H2O) shows remarkable ion exchange capacity for several ions in neutral and alkaline mediums. The Zn2+ ⇌ Ca2+ exchange data by 11 Å tobermorite in nearly neutral medium is described. A 0.92–12.8 wt.-% of zinc was achieved by placing tobermorite in dilute solutions of Zn2+ (100–2000 ppm) the X-ray powder diffraction data reveal that the crystallinity of the exchanger remains intact after cation exchange. The thermodynamics of the exchange reaction has also been developed. This new ion exchanger resembles clays and zeolites in some respects.</div>","PeriodicalId":101061,"journal":{"name":"Reactivity of Solids","volume":"7 3","pages":"Pages 225-233"},"PeriodicalIF":0.0000,"publicationDate":"1989-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0168-7336(89)80039-7","citationCount":"7","resultStr":"{\"title\":\"Cation exchange studies on cement hydration phase: Ca5Si6O18H2·4H2O\",\"authors\":\"N. Labhsetwar, O.P. Shrivastava\",\"doi\":\"10.1016/0168-7336(89)80039-7\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>Recently it has been established that 11 Å tobermorite (a calcium silicate hydrate, closely related to Ca5Si6O18H2·4H2O) shows remarkable ion exchange capacity for several ions in neutral and alkaline mediums. The Zn2+ ⇌ Ca2+ exchange data by 11 Å tobermorite in nearly neutral medium is described. A 0.92–12.8 wt.-% of zinc was achieved by placing tobermorite in dilute solutions of Zn2+ (100–2000 ppm) the X-ray powder diffraction data reveal that the crystallinity of the exchanger remains intact after cation exchange. The thermodynamics of the exchange reaction has also been developed. This new ion exchanger resembles clays and zeolites in some respects.</div>\",\"PeriodicalId\":101061,\"journal\":{\"name\":\"Reactivity of Solids\",\"volume\":\"7 3\",\"pages\":\"Pages 225-233\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1989-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0168-7336(89)80039-7\",\"citationCount\":\"7\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Reactivity of Solids\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0168733689800397\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactivity of Solids","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0168733689800397","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 7

摘要

11 Å托贝莫来石(一种水合硅酸钙，与Ca5Si6O18H2·4H2O密切相关)在中性和碱性介质中对多种离子具有显著的离子交换能力。本文描述了11 Å托贝莫来石在近中性介质中Zn2+ + +与Ca2+的交换数据。将托贝莫来石置于Zn2+ (100-2000 ppm)的稀溶液中，可获得0.92-12.8 wt.-%的锌。x射线粉末衍射数据表明，阳离子交换后，交换剂的结晶度保持不变。交换反应的热力学也得到了发展。这种新的离子交换剂在某些方面类似于粘土和沸石。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

Cation exchange studies on cement hydration phase: Ca5Si6O18H2·4H2O

Recently it has been established that 11 Å tobermorite (a calcium silicate hydrate, closely related to Ca₅Si₆O₁₈H₂·4H₂O) shows remarkable ion exchange capacity for several ions in neutral and alkaline mediums. The Zn²⁺ ⇌ Ca²⁺ exchange data by 11 Å tobermorite in nearly neutral medium is described. A 0.92–12.8 wt.-% of zinc was achieved by placing tobermorite in dilute solutions of Zn²⁺ (100–2000 ppm) the X-ray powder diffraction data reveal that the crystallinity of the exchanger remains intact after cation exchange. The thermodynamics of the exchange reaction has also been developed. This new ion exchanger resembles clays and zeolites in some respects.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助