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搜索结果: 1-12 共查到地质学 NMR Study相关记录12条 . 查询时间(0.062 秒)
Abstract: 113Cd solid-state nuclear magnetic resonance (NMR) was used to identify possible Cd2+ adsorption sites in montmorillonite. The montmorillonite was treated with 0.1 and 1 M CdCl2 aqueous solu...
29The SiMASNMRspectrumofarmenitefromWasenalp(Valais,Switzerland)indicates completeSi,Alordering.Thesamechemicalshifts(82.3,95.0,and101.8ppm)were alsomeasuredforarmenitefromRe!migny(Quebec,Canada),ho...
25Mg NMR spectra for several silicate and aluminosilicate melts were obtained from 1000–1470 8C. The peaks are initially very broad, but narrow with increasing temperature to near 500 Hz at the highes...
ThepositionaldisorderofMg andAl cationsbetweenthetetrahedralandoctahedralsitesinnaturalMgAlO spinelhasbeeninvestigatedby AlMASNMRatroomtem-2 427peratureandin-situhigh-temperatureAlNMRspectroscopyupto1...
Twoseriesofleucitegroupmaterials,withK,Rb,andCsasextra-frameworkcations,havebeensynthesizedbyionexchangefromanaturalwell-orderedanalciteandanatural29 27disorderedleucite.Siand AlMASNMRdatafortheanalci...
Abstract: Motion of the guest molecules in kaolinite/dimethyl sulfoxide (DMSO) intercalation compounds Al2Si2O5(OH)4?CH3)2SO has been studied by means of solid-state nuclear magnetic resonance (NMR) i...
The11.7T Mg, Al, Si,and BMASNMRspectraarereportedforwell-charac-terizedgrandidierite,(Mg,Fe)AlSiBO ,whichcontainsbothAlandMgin?vefoldcoor-dinationwithoxygen.TheMgspectrumisthe?rsttobereportedfor Mg,an...
Two structurally related magnesium phosphates, phosphoellenbergerite (P63mc) and holtedahlite (P63), have been investigated using a combination ofhigh-frequency IR and lH MAS,31p MAS,and 31p CPMASNMR ...
2H NMR spectra of synthetic deuterated kaolinite have been collected in the temperature range from 150 K to 350 K. Hydroxyl groups show a Pake doublet pattern with an asymmetry factor of 0. They are a...
The dehydration and migration of the interlayer cation of the synthetic beidellite Na0.7Al4.7Si7.3O20-(OH)4·nH2O, were studied with solid-state 23Na and 27Al MAS-NMR, heating stage XRD, and thermograv...
High-resolution solid-state, fluorine-19, magic-angle spinning-nuclear magnetic resonance spectroscopy (MAS-NMR) was used to study natural and synthetic fluorinated 2:1 layer silicates of known compos...
A model is presented for interpreting the observed nuclear spin relaxation of the protons in the water molecules of the dispersing phase in terms of the modification of molecular motion in the solid-l...

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