1) precipitation number
沉淀液
2) liquid-phase precipitation
液相沉淀
1.
Preparation of Al_2O_3 nanopowders withliquid-phase precipitation method;
特殊液相沉淀法制备纳米Al_2O_3粉体
2.
Preparation of nano BaTiO_3 doped with Sn powder by special liquid-phase precipitation method;
用特殊液相沉淀法制备掺锡钛酸钡纳米粉体
3.
Preparation of ZTA nanoceramic composites by liquid-phase precipitation method;
液相沉淀法制备ZTA纳米复相陶瓷
3) liquid precipitation
液相沉淀
1.
In this paper,the liquid precipitation method is introduced,which includes direct precipitation,co-precipitation and homogeneous precipitation.
液相沉淀法是一种合成纳米粉体最为普遍的方法。
2.
SrB6O10·5H2O flower-like and jujube-like superstructures consisting of nanoplates were prepared by a facile solution route,in which NH4HB4O7·3H2O and SrCl2·6H2O were used as raw materials and the liquid precipitation method was adopted.
采用液相沉淀法,以氯化锶和硼酸氢铵为原料,制备了由纳米片组成的水合硼酸锶(SrB6O10。
3.
Nano-sized glass powder in Al2O3-SiO2-P2O5-CaF2 system was prepared by liquid precipitation method into which several inorganic substances were added as initial reactants containing ions such as Al3+,SiO32-,P3O105-,Ca2+,F-respectively.
选取几种分别含有Al3+,SiO32-,P3O105-,Ca2+,F-的无机盐作为初始反应物,采用液相沉淀法合成了Al2O3-SiO2-P2O5-CaF2系纳米玻璃态粉体,在400～900℃温度范围内对粉体进行热处理,借助TEM,EDAX,XRD,IR,DSC等分析手段表征了粉体的形貌、化学组成、结晶状态、玻璃结构及析晶特性。
4) aqueous precipitation
液相沉淀
1.
LiFePO4 was prepared by carbothermal reduction of FePO4,which was synthesized by aqueous precipitation from FeSO4.
7H2O和NH4H2PO4为原料,H2O2为氧化剂,通过液相沉淀法制备前驱体FePO4,然后通过碳热还原法合成LiFePO4;研究降温速度对产物晶型结构、形貌以及电化学性能的影响。
2.
In the first method,acetylene black was mixed with FePO4 which was prepared by aqueous precipitation of FePO4 from FeSO4.
7H2O和NH4H2PO4为原料,以H2O2为氧化剂,通过液相沉淀法制得前驱体FePO4,然后通过碳热还原反应制得LiFePO4。
3.
LiFePO_4 was prepared by carbothermal reduction of FePO_4 which was synthesized by aqueous precipitation from FeSO_4·7H_2O and NH_4H_2PO_4 and hydrogen peroxide as the oxidizing agents.
7H2O,NH4H2PO4和H2O2为初始原料,通过液相沉淀制得前驱体FePO4,然后通过碳热还原得到LiFePO4/C。
5) liquid phase precipitation
液相沉淀
1.
Study on the preparation of nanometer ZnS by liquid phase precipitation method;
液相沉淀法制备纳米硫化锌的研究
2.
Magnesium titanate was obtained with special liquid phase precipitation method.
采用特殊液相沉淀法制备了镁的钛酸盐。
3.
FeVO4 photocatalysts are successfully prepared by liquid phase precipitation.
采用液相沉淀法制备了FeVO4光催化剂样品,分别研究了不同的制备条件(V/Fe物质的量比、沉淀反应pH值和煅烧温度)对样品的理化性能及其光催化性能的影响。
6) precipitation number
沉淀值[液]
补充资料：沉淀
| 沉淀 precipitation 从液相中产生一个可分离的固相的过程，或是从过饱和溶液中析出的难溶物质。沉淀作用表示一个新的凝结相的形成过程，或由于加入沉淀剂使某些离子成为难溶化合物而沉积的过程。产生沉淀的化学反应称为沉淀反应。物质的沉淀和溶解是一个平衡过程，通常用溶度积常数Ksp来判断难溶盐是沉淀还是溶解。溶度积常数是指在一定温度下，在难溶电解质的饱和溶液中，组成沉淀的各离子浓度的乘积为一常数。分析化学中经常利用这一关系，借加入同离子而使沉淀溶解度降低，使残留在溶液中的被测组分小到可以忽略的程度。 沉淀可分为晶形沉淀和非晶形沉淀两大类型。硫酸钡是典型的晶形沉淀，Fe2O3·nH2O是典型的非晶形沉淀。晶形沉淀内部排列较规则，结构紧密，颗粒较大，易于沉降和过滤；非晶形沉淀颗粒很小，没有明显的晶格，排列杂乱，结构疏松，体积庞大，易吸附杂质，难以过滤，也难以洗干净。实验证明，沉淀类型和颗粒大小，既取决于物质的本性，又取决于沉淀的条件。在实际工作中，须根据不同的沉淀类型选择不同的沉淀条件，以获得合乎要求的沉淀。对晶形沉淀，要在热的稀溶液中，在搅拌下慢慢加入稀沉淀剂进行沉淀。沉淀以后，将沉淀与母液一起放置，使其“陈化”，以使不完整的晶粒转化变得较完整，小晶粒转化为大晶粒。而对非晶形沉淀，则在热的浓溶液中进行沉淀，同时加入大量电解质以加速沉淀微粒凝聚，防止形成胶体溶液。沉淀完毕，立即过滤，不必陈化。 在经典的定性分析中，几乎一半以上的检出反应是沉淀反应。在定量分析中，它是重量法和沉淀滴定法的基础。沉淀反应也是常用的分离方法，既可将欲测组分分离出来，也可将其它共存的干扰组分沉淀除去。 |
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