搜索结果: 1-15 共查到“地质学 -Al2O3”相关记录20条 . 查询时间(0.078 秒)
Al2O3/Ti:风化与蚀变过程中的原岩示踪
不活动元素 Al2O3-Ti图解 火成岩 风化剖面 蚀变岩 原岩判别
2016/11/18
Al2O3和Ti在风化和热液蚀变等地球化学过程中通常被认为是不活动元素，两者的比值Al2O3/Ti常被用来指示地球化学作用过程。通过对中国157件火成岩样品元素含量平均值的统计发现，火成岩样品中Al2O3/Ti与SiO2含量值之间存在着较好的幂函数关系：ln（Al2O3/Ti）=0.073×SiO2-0.89，式中Al2O3和SiO2和Ti含量单位均为%。本文基于得到的经验方程和TAS图解构建了一...
Al2O3催化臭氧化去除水中有机物的研发进展
臭氧 催化臭氧化 Al2O3 水处理
2011/10/25
综述了Al2O3应用于非均相催化臭氧化体系的研究进展，对比了催化体系和单独臭氧体系对水中有机物的去除效果，从催化剂对有机物的吸附、溶液的pH值影响、溶液中存在的无机离子和臭氧的分解机理方面，探讨了影响Al2O3催化臭氧化体系催化效果的主要因素，分析了目前研究中存在的问题，展望了Al2O3催化剂在水处理方面的应用前景。
Densities of melts in the CaO-MgO-Al2O3-SiO2 system
Density measurements CaO-MgO-Al2O3-SiO2 system melts
2012/3/31
Densitymeasurementshavebeenperformedon4Mg-aluminosilicatemeltsand4melts
O -SiO system(includingstoichiometriescorrespondingtothemin-intheCaO-MgO-Al
eralcomositionsa?kermanite,diopside,enstatite,andc...
Multicomponent diffusion in the molten system K2O-Na2O-Al2O3-SiO2-H2O
Multicomponent diffusion K2O-Na2O-Al2O3-SiO2-H2O
2012/3/31
We have measured multicomponent chemical diffusion coefficients in a melt near to the low pressure water-saturated eutectic granite composition in the system K2O-Na2O-Al2O3-SiO2-H2O at 1.0 GPa and te...
Melting experiments in the systems CaO-MgO-Al2O3-SiO2 and MgO-SiO2 at 3 to 15 GPa
Melting experiments CaO-MgO-Al2O3-SiO2 MgO-SiO2
2012/3/31
The results of multi-anvil melting experiments are reported for a range of compositions in the system CaO-MgO-Al2O3-SiO2. The liquidus crystallization fields for forsterite, or-thopyroxene, clinopyrox...
An experimental study of the pressure-temperature stability of MgMgAl-pumpellyite in the system MgO-Al2O3-SiO2-H2O
An experimental study of the pressure-temperature stability of MgMgAl-pumpellyite in the system MgO-Al2O3-SiO2-H2O
2012/3/31
The stability field of MgMgAl-pumpellyite, Mg5Al5SiO21(OH)7, was determined in the system MgO-Al2O3-SiO2-H2O in reversal experiments at pressures between 34 and 100 kbar and temperatures in the range ...
A new garnet-orthopyroxene thermometer based on reversed Al2O3 solubility in FeO-Al2O3-SiO2 orthopyroxene
garnet-orthopyroxene thermometer reversed Al2O3 solubility FeO-Al2O3-SiO2 orthopyroxene
2012/4/5
Reversedphase-equilibriumdata,collectedoverthe P-T range12¤C20kbarat850¤C11C,de?nethesolubilityofAl O inferrosilite(Fs)inequilibriumwithalmandinegarnet
(Alm).Thenewdataindicatesigni?cantlylowerAlO so...
The Natural Occurrence of Eta-Alumina (兣-Al2O3) in Bauxite
Akdalaite Bauxite Chi-alumina Eta-alumina Gamma-alumina Pisoliths Poorly-diffracting material Tohdite
2011/12/27
Approximately 20 wt.% of the bauxite from Andoom in northern Queensland, Australia is composed of material that cannot be accounted for by identifiable well-crystallized phases. This poorly- diffracti...
Experimental reversals of chlorite compositions in divariant MgO + Al2O3 + SiO2 + H2O assemblages
Experimental reversals chlorite compositions MgO + Al2O3 + SiO2 + H2O assemblages
2012/4/6
The compositions ofchlorite in divariant assemblages involving orthopyroxene + for-sterite and spinel + corundum werereversed at a range oftemperatures for P= 14kbar and a range of pressures for T = 8...
Properties and Characterization of Al2O3 and SiO2-TiO2 Pillared Saponite
Adsorption Clays Cross-linking MASNMR Montmorillonite Pillared clay Saponite Smectite
2011/12/30
A saponite pillared with a single (Al2O3) or a mixed (SiO2-TiO2) oxide exhibited basal spacings of 16–19 and 30–40Å, respectively. The pillared structures were found to be stable up to 700°C. Wa...
Synthetic Allophane and Layer-Silicate Formation in SiO2-Al2O3-FeO-Fe2O3-MgO-H2O Systems at 23°C and 89°C in a Calcareous Environment
Allophane Hisingerite Hydrous feldspathoid Nontronite Poorly-ordered layer silicates “Protoimogolite” Saponite Synthesis
2012/1/4
Solutions containing AlCl3 and Si(OH)4 (concentrations ≤ 1.5 mM with molar Si:Al ratios of 1:2, 1:1 and 3:1) and FeCl2 (0, 0.5 and 1.0 mM) were adjusted to pH 8 with Ca(OH)2, and incubated at 23°C and...
Metastability in Near-Surface Rocks of Minerals in the System Al2O3-SiO2-H2O
Aluminum hydroxide Dickite Gibbs free energy Halloysite Kaolinite Metastability Phase equilibria Pyrophyllite
2011/12/31
Gibbs free energies for phases in the system Al2O3-SiO2-H2O have been calculated from reversed experiments in order to correct earlier values and to calculate a phase diagram consistent with more rece...
Synthesis and Characterization of Zeolites in the System Na2O-K2O-Al2O3-SiO2-H2O
Gobbinsite Merlinoite Phillipsite Saline Alkaline lake Synthesis Zeolite Pt Zeolite W Zeolite ZK-19
2012/2/6
Zeolites having the structures of phillipsite, merlinoite, and gobbinsite were synthesized from clear solutions at 80°C in the system Na2O-K2O-Al2O3-SiO2-H2O and their morphologies, cell parameters, a...