- 二氧化硅_百度百科
二氧化硅，是一种无机化合物，化学式为SiO2，硅原子和氧原子长程有序排列形成晶态二氧化硅，短程有序或长程无序排列形成非晶态二氧化硅。
- Silicon dioxide - Wikipedia
Silicon dioxide, also known as silica, is an oxide of silicon with the chemical formula SiO2, commonly found in nature as quartz [5][6] In many parts of the world, silica is the major constituent of sand
- Silica | SiO2 | CID 24261 - PubChem
Silica is another name for the chemical compound composed of silicon and oxygen with the chemical formula SiO2, or silicon dioxide There are many forms of silica
- 二氧化硅（SiO2） - ChemicalBook
实际上，SiO2晶体是由Si和O按1：2的比例所组成的立体网状结构的晶体。 因此，通常用SiO2来表示二氧化硅的组成。 SiO4四面体不仅存在于SiO2晶体中，而且存在于所有硅酸盐矿石中，是构成多姿多彩的硅酸盐世界的基本骨架。
- 二氧化硅_化工百科 - ChemBK
二氧化硅的物理性质：无色透明晶体或无定形粉末，无味。熔点为1710℃（方石英），1670℃（鳞石英）；沸点为2230℃。无定形粉末能与碱起作用，物理和化学性质稳定，易成型，本身惰性，熔融物呈层状，加热时膨胀系数小。 二氧化硅的化学性质：几乎不溶于水郓普通酸，能溶于氢氟酸生成氟化硅
- Silicon Dioxide ( SiO₂) - Definition, Structure, Preparation, Uses . . .
Silicon Dioxide ( SiO₂) – Definition, Structure, Preparation, Uses, Side Effects Silicon Dioxide is denoted as SiO₂, is a common covalent compound that plays a significant role in the world of chemistry Found naturally in sand and quartz, it forms when silicon and oxygen atoms bond together in a strong covalent bond, creating a stable and rigid structure This compound is not only
- 二氧化硅 - 搜狗百科
常见的浓磷酸（或者说焦磷酸）在高温下即可腐蚀二氧化硅，生成杂多酸 [1]，高温下熔融硼酸盐或者硼酐亦可腐蚀二氧化硅，鉴于此性质，硼酸盐可以用于陶瓷烧制中的助熔剂，除此之外氟化氢也可以可使二氧化硅溶解的酸，生成易溶于水的氟硅酸： 6HF+SiO2
- mp-6930: SiO2 (trigonal, P3_221, 154) - Materials Project
SiO2 is quartz (alpha) structured and crystallizes in the trigonal P3_221 space group The structure is three-dimensional Si4+ is bonded to four equivalent O2- atoms to form corner-sharing SiO4 tetrahedra All Si–O bond lengths are 1 63 Å O2- is bonded in a bent 150 degrees geometry to two equivalent Si4+ atoms
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