amorphous silica 中文意思是什麼
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Preparation of amorphous silica from coal - based kaolin
用煤系高嶺土製取白炭黑的研究 -
These amorphous carbon tubes are totally different from those graphitized carbon nanotubes obtained through traditional methods. the simple and direct synthesis method is superior to the usual casting method by mesoporous silica materials
相對于利用中孔sio _ 2為模板合成的中孔碳材料，我們的合成方法更簡單直接，並且如此大孔徑的有序中孔碳材料也是首次報道。 -
Health requirements for occupational exposure to synthetic amorphous silica
暴露在合成非晶態硅土下的工作崗位的健康要求 -
High si / al amorphous silica - alumina with satisfactory pore structure could be prepared via optimization the preparation condition
通過優化加料順序、加料方式和制備條件，可以制備出理想孔結構的高硅鋁比無定形硅鋁干膠產品。 -
It was the first time that the silica nanoparticles was coated with gd2o3 : eu rare - earth oxides, then the core - shell structure compound particles were obtained. the characterizations showed that the thickness of uniform coating is in 10 - 20nm ; the silica core is linked with the gd2o3 : eu shell by chemical bond si - o - gd ; because of the size effects and interface effects of nano - crystal coating, the diffraction and emission peaks become broadened. and at the same time, the transfer temperature of silica from amorphous to crystal is decreased
首次在納米sio2表面包覆一層gd2o3 : eu稀土復合氧化物，得到了核-殼結構的復合顆粒，表徵結果表明，均勻包覆層的厚度為10 - 20nm ； sio2核和gd2o3 : eu殼層物質之間通過化學鍵si - o - gd鍵的作用結合在一起；由於包覆層納米晶的尺寸效應和界面效應使xrd衍射峰和熒光光譜發射峰出現了寬化現象。 -
Factors influencing pore structure of amorphous silica - alumina prepared by carbonization were investigated
摘要系統考察了影響碳化法制備無定形硅鋁孔結構的因素。 -
Structural characterization revealed that nanocables composed of discontinuous crystalline in core with diameters of 200 ~ 500nm and amorphous silica shell with diameter from 300 ~ 600nm
近一步?定得知，非晶相之二氧化矽管壁包覆著間斷的結晶性銦奈米棒，其管壁外徑約300 ~ 600奈米、內徑約200 ~ 500奈米。
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