{"title":"Formation of Ca-O clusters and their protonation and hydration in direct laser vaporization","authors":"Xiang-Hong Liu, Xiao-Guang Zhang, Xiu-Yan Wang, Nan-Quan Lou","doi":"10.1002/bbpc.19971010714","DOIUrl":null,"url":null,"abstract":"<p>Calcium oxide clusters produced in the direct laser vaporization of different precursor solid samples CaO, Ca(OH)<sub>2</sub> and CaCO<sub>3</sub> have been investigated by a time-of-flight mass spectrometer. Besides [Ca(CaO)<sub><i>n</i></sub>]<sup>+</sup> and [(CaO)<sub><i>n</i></sub>]<sup>+</sup> clusters, considerable protonated clusters [H(CaO)<sub><i>n</i></sub>]<sup>+</sup> and hydrated clusters [H(CaO)<sub><i>n</i></sub>(H<sub>2</sub>O)<sub><i>m</i></sub>]<sup>+</sup> have also been found in the TOF mass spectra. The characteristic of the abundance distribution of the clusters shows that the formation process of calcium oxide clusters should proceed along the growth course of the rock salt structure, which is further supported by the reactivity of [H(CaO)<sub><i>n</i></sub>]<sup>+</sup> clusters with H<sub>2</sub>O produced in the direct laser vaporization.</p>","PeriodicalId":100156,"journal":{"name":"Berichte der Bunsengesellschaft für physikalische Chemie","volume":"101 7","pages":"1071-1074"},"PeriodicalIF":0.0000,"publicationDate":"2010-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/bbpc.19971010714","citationCount":"4","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Berichte der Bunsengesellschaft für physikalische Chemie","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/bbpc.19971010714","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 4
Abstract
Calcium oxide clusters produced in the direct laser vaporization of different precursor solid samples CaO, Ca(OH)2 and CaCO3 have been investigated by a time-of-flight mass spectrometer. Besides [Ca(CaO)n]+ and [(CaO)n]+ clusters, considerable protonated clusters [H(CaO)n]+ and hydrated clusters [H(CaO)n(H2O)m]+ have also been found in the TOF mass spectra. The characteristic of the abundance distribution of the clusters shows that the formation process of calcium oxide clusters should proceed along the growth course of the rock salt structure, which is further supported by the reactivity of [H(CaO)n]+ clusters with H2O produced in the direct laser vaporization.
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