1) ammonium silicofluoride
硅氟酸铵
2) Ammonium fluorosilicate
氟硅酸铵
3) ammonium hexafluorosilicate
氟硅酸铵
1.
It seems that the dealumination and the silicon substitutionof Y zeolites with ammonium hexafluorosilicate undergoes two steps,andthe dealumination rate is much more rapid than that of silicon substitu-tion.
用氟硅酸铵溶液处理NaNH_4Y可制得新型超稳Y沸石FSEY,本文通过比较不同条件下制得的FSEY的相对结晶度、晶胞大小及硅铝比,探讨了氟硅酸铵脱铝补硅机理。
2.
HMCM-22 zeolite was modified with ammonium hexafluorosilicate and characterized by temperature-programmed desorption of ammonia and pyridine adsorption infrared spectroscopy.
用氟硅酸铵对HMCM-22分子筛进行了改性处理,并采用氨程序升温脱附和吡啶吸附红外光谱法测定了其酸性。
3.
hydrothermal,acid and ammonium hexafluorosilicate(AHFS)treatments were used to treat the nanoscale HZSM-5,and the means of XRD,NH3-TPD,XRF,IR and N2 adsorption were used to characterize these treated samples,in order to investigate the effects of dealumination methods on the structure and properties of nanoscale HZSM-5,such as acidity,molar ratio of Si/Al,surface area and pore volume.
分别采用水热处理、酸处理和氟硅酸铵(AHFS)对纳米HZSM-5分子筛进行脱铝,并采用XRD、NH3-TPD、XRF、IR和N2吸附等方法对这些样品进行了表征,考察了脱铝方法对纳米HZSM-5的结构、酸性、硅/铝摩尔比、比表面积和孔体积等物化性质的影响。
4) Ammonium fluorosilicate
六氟硅酸铵
5) aqueous ammonium fluorosillicate
液相氟硅酸铵法
6) Ammonium fluorosilicate
氟硅化铵
补充资料:硅氟酸铵
分子式:(NH4)2SiF6
CAS号:
性质:又称硅氟酸铵(ammonium silicofluoride) 无色结晶粉末。有α、β两种晶型。α型为天然八面体晶体,属等轴晶系。β型为三斜晶系。密度:α型2.011g/cm3,β型2.152g/cm3。折射率1.3696,有强腐蚀性。溶于醇和水,不溶于丙酮。在空气中稳定。有毒!由萤石粉、硅砂与硫酸反应制得氟硅酸,再用氨中和,趁热过滤,浓缩,结晶,离心分离,干燥制得。亦可直接用氨中和磷肥副产的氟硅酸制得。用作酿造工业消毒剂,玻璃蚀刻剂,纺织品防虫剂,木材防腐剂。还可用于轻金属浇铸、电镀,以及由绿砂中提钾及制取人造冰晶石等。
CAS号:
性质:又称硅氟酸铵(ammonium silicofluoride) 无色结晶粉末。有α、β两种晶型。α型为天然八面体晶体,属等轴晶系。β型为三斜晶系。密度:α型2.011g/cm3,β型2.152g/cm3。折射率1.3696,有强腐蚀性。溶于醇和水,不溶于丙酮。在空气中稳定。有毒!由萤石粉、硅砂与硫酸反应制得氟硅酸,再用氨中和,趁热过滤,浓缩,结晶,离心分离,干燥制得。亦可直接用氨中和磷肥副产的氟硅酸制得。用作酿造工业消毒剂,玻璃蚀刻剂,纺织品防虫剂,木材防腐剂。还可用于轻金属浇铸、电镀,以及由绿砂中提钾及制取人造冰晶石等。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条