Preparation of Oxides and Silicates

Preparation of Oxides and Silicates. Both simple (SiO2, Al2O3,Mn3O4, and Fe3O4) and complex (K2O3 Al2O3 3 6SiO2) oxides were tested in this study. SiO2 of different crystallinity (amorphous,aphanitic or cryptocrystalline, and crystalline) came from a synthetic silicon oxide, an agate, and a quartz sand sample, respectively.Al2O3 was prepared from the mineral corundum. The original silica and alumina were ground using a mortar and pestle and separated into size fractions of

結果 (中文) 1:

Preparation of Oxides and Silicates. Both simple (SiO2, Al2O3,Mn3O4, and Fe3O4) and complex (K2O3 Al2O3 3 6SiO2) oxides were tested in this study. SiO2 of different crystallinity (amorphous,aphanitic or cryptocrystalline, and crystalline) came from a synthetic silicon oxide, an agate, and a quartz sand sample, respectively.Al2O3 was prepared from the mineral corundum. The original silica and alumina were ground using a mortar and pestle and separated into size fractions of <2 μm, 2-28 μm, 28-48 μm, and 45-75 μm. Grains of reagent gradeMn3O4 and Fe3O4 of 10-20 μmin diameter were used directly without further treatment. Mineral potassium feldspar (chemical formula KAlSi3O8) was used to represent the complex oxide K2O3 Al2O3 3 6SiO2. A large crystal of potassium feldspar was ground to particles in the size fraction of 45-75 μm. Analiquot of the freshly prepared KAlSi3O8 powder was further acidleached in 0.1 N HCl at 50
C for 48 h. All the silicate phases were prepared from phyllosilicate minerals (Table 1). The pristine minerals were first fully dispersed in an ultrasonic bath. The resultant悬浮液离心 2000 rpm，2 分钟，倒出，紧接着进一步离心 5000 rpm，30 分钟。在离心管底部沉积物具有小于 2 μ m 理论的晶粒尺寸，然后提取 15。所有的样本用去离子蒸馏水洗涤，烘干 50 Cfor 12 小时前他们在实验中的使用。没有进一步进行成分和结构分析来无论从商业还是从我们自己的收藏源材料表征。

結果 (中文) 3:

的氧化物和硅酸盐的制备。简单（SiO2、Al2O3、Mn3O4，和Fe3O4）和复杂的（k2o3 Al2O3 3 6SiO2）氧化物进行了实验。不同的结晶二氧化硅（无定形，隐晶质或隐晶质，晶体）来自一个合成氧化硅，玛瑙，和石英砂样品，respectively.al2o3是矿物刚玉的制备。原来的二氧化硅和氧化铝是用臼和杵，分为＜2μ米大小的分数，2-28μm，9μm，与原μM.粒剂grademn3o4和10-20μ最小直径Fe3O4直接使用，无需进一步处理。矿物钾长石（化学式为KAlSi3O8）是用来表示复杂的氧化物Al2O3 3 k2o3 6SiO2。一个大的钾长石晶体在45-75μm粒级颗粒的地面的新鲜制备的KAlSi3O8粉等分进一步acidleached 0.1 N HCl在50 C 48小时从层状硅酸盐矿物制备所有的硅酸盐相（表1）。原始矿物首次完全分散在超声波浴中。由此产生的悬浮离心2000转2分钟，倒出，再离心5000转30分钟，在离心管底部的沉积物，具有小于2μM理论的粒度，然后提取15。所有样品用去离子水和烘干在50保温12 h的使用在实验之前洗。没有进一步的组成和结构分析来描述的源材料，无论是商业上或从我们自己的集合。