{"title":"用有机碱稳定剂在连续流反应器中沉淀二氧化钛","authors":"Paul Nahass, H.K. Bowen","doi":"10.1016/0025-5416(88)90261-3","DOIUrl":null,"url":null,"abstract":"<div><p>Narrow-size-distribution, non-agglomerated TiO<sub>2</sub> powder was precipitated on a large scale within a continuous-flow reactor from high concentrations of titanium tetraethoxide (Ti(OEt)<sub>4</sub>) and water in ethanol. A plug-flow reactor with static mixers enabled continuous TiO<sub>2</sub> production of 60 g h<sup>−1</sup> over a period of 8 h from 0.25 M alkoxide and 1.0 M water. The organic base triethylamine was added as a stabilizer to the alkoxide stream prior to synthesis. The resultant powder had an average particle diameter of 0.37 μm with about 85% singlets and a standard deviation in particle size of 16%.</p></div>","PeriodicalId":100890,"journal":{"name":"Materials Science and Engineering","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"1988-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0025-5416(88)90261-3","citationCount":"2","resultStr":"{\"title\":\"Precipitation of titania in a continuous-flow reactor with an organic base stabilizer\",\"authors\":\"Paul Nahass, H.K. Bowen\",\"doi\":\"10.1016/0025-5416(88)90261-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Narrow-size-distribution, non-agglomerated TiO<sub>2</sub> powder was precipitated on a large scale within a continuous-flow reactor from high concentrations of titanium tetraethoxide (Ti(OEt)<sub>4</sub>) and water in ethanol. A plug-flow reactor with static mixers enabled continuous TiO<sub>2</sub> production of 60 g h<sup>−1</sup> over a period of 8 h from 0.25 M alkoxide and 1.0 M water. The organic base triethylamine was added as a stabilizer to the alkoxide stream prior to synthesis. The resultant powder had an average particle diameter of 0.37 μm with about 85% singlets and a standard deviation in particle size of 16%.</p></div>\",\"PeriodicalId\":100890,\"journal\":{\"name\":\"Materials Science and Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1988-04-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0025-5416(88)90261-3\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Science and Engineering\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0025541688902613\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Science and Engineering","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0025541688902613","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
摘要
在连续流反应器中，以高浓度四乙氧钛(Ti(OEt)4)和水为原料，在乙醇中大规模析出粒径分布窄、未结块的TiO2粉体。在静态混合器的塞流反应器中，从0.25 M的醇盐和1.0 M的水中，在8小时内连续生产60 g h−1的TiO2。在合成前，将有机碱三乙胺作为稳定剂添加到醇氧化合物流中。所得粉末的平均粒径为0.37 μm，单线态约占85%，粒径标准差为16%。
Precipitation of titania in a continuous-flow reactor with an organic base stabilizer
Narrow-size-distribution, non-agglomerated TiO2 powder was precipitated on a large scale within a continuous-flow reactor from high concentrations of titanium tetraethoxide (Ti(OEt)4) and water in ethanol. A plug-flow reactor with static mixers enabled continuous TiO2 production of 60 g h−1 over a period of 8 h from 0.25 M alkoxide and 1.0 M water. The organic base triethylamine was added as a stabilizer to the alkoxide stream prior to synthesis. The resultant powder had an average particle diameter of 0.37 μm with about 85% singlets and a standard deviation in particle size of 16%.
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