1) P/V
磷钒比
2) P-V-Mo yellow colorimetric method
磷钒钼黄比色法
1.
Mo-Sb colorimetric method and P-V-Mo yellow colorimetric method were used to determine the content of total phosphorus in different parts of wetland plants,and the difference in determination results obtained by two methods was compared.
利用钼锑抗比色法和磷钒钼黄比色法测定湿地植物不同器官的全磷含量,比较两种测定方法存在的差异。
3) VOPO4·2H2O
磷酸氧钒
4) vanadium phosphate
钒磷酸盐
1.
A new three dimensional open-framework vanadium phosphate, [H3N (CH2)3NH3]2[H3N(CH2)3NH2][H2N(CH2)3NH2][V(H2O)2(VO)8(OH)4(PO4)4(HPO4)4]·4H2O (DAP-V9P8), has been hydrothermaly synthesized using 1,3-diaminopropane (1,3-DAP) as structure-directing molecule and characterized by single crystal X-ray diffraction, infrared spectrum and thermogravimetric analysis.
以1,3-丙二胺为模板,水热合成了三维孔道结构钒磷酸盐[H3N (CH2)3NH3]2[H3N(CH2)3NH2〗[H2N(CH2)3NH2V(H2O)2(VO)8(OH)4(PO4)4(HPO4)4]。
2.
The thermal stabilities of seven kinds of hydrothermaly synthesized organic-templated vanadium phosphates in the V-P-O-en system have been characterized by TG-DTA,FT-IR thermal and XRD.
对水热合成的V-P-O-en体系中七种常见不同结构钒磷酸盐的热稳定性进行了TG-DTA、FT-IR和XRD的比较研究。
3.
The thermal behavior of the layer structure vanadium phosphate(H2NC4H8NH2)0.
采用新配方水热合成了层状结构钒磷酸盐(H2NC4H8NH2)0。
5) Vanadium phosphorus oxide
钒磷氧
1.
In this paper, the acetalization of benzylaldehyde and 1,3-propanediol in the presence of vanadium phosphorus oxide catalyst was studied.
研究了苯甲醛与1,3-丙二醇在钒磷氧催化剂作用下的缩醛化反应,考察了反应时间、醇醛比、催化剂用量、带水剂种类和用量等因素对苯甲醛1,3-丙二醇缩醛收率的影响。
6) phosphorus vanadium molybdate yellow
磷钒钼黄
1.
Phosphorus content in zinc phosphate is determined by phosphorus vanadium molybdate yellow colorimetric method.
采用磷钒钼黄比色法测定磷酸锌中磷含量。
补充资料：钒磷铁矿提钒
钒磷铁矿提钒
extraction of vanadium from the bear vanadium phosphosiderite
和94％。fantintiekuang tifan钒磷铁矿提钒(extraetion of vanadium frombear vanadium phosphosiderite)以含钒磷铁矿为原料制取五氧化二钒的帆提取方法。主要包括钠化焙烧和湿法漫出两道作业。直接用作提饥原料的是含饥磷铁。 含钒磷铁是饥磷铁矿电炉生产单质磷和磷肥的副产品。钒磷铁矿分布在美国爱达荷、蒙大拿、怀俄明、犹他等州，含Pz05 24%~32%、V:O。0.267%~0.625%和少量的铬、镍和钥等。美国克尔麦吉(Kerr-MeGee)化学公司所用的含钒磷铁含饥3.26%~5 .2%、磷24.7%~26.6%、铁59.9%一68.5%、铬3.4%一5.7%、镍。.84%~1%。先将含钒磷铁磨至粒度小于。.42mm，配入1.4倍纯碱和。.1倍的食盐在回转窑中于1043~lo63K温度下焙烧，钒便转变成水溶性的钠盐。熔烧块在加热到沸腾的水中浸出，钒、铬、磷均溶入浸出液。浸出浆液经过滤处理。滤液冷却结晶析出磷酸钠晶体，用离心机分离。晶体中如仍含有钒和铬，可用水重溶后再结晶分离，直到获得合格的磷酸钠(NaaPO;)晶体产品。若Na3PO‘结晶母液含磷高于0. 989/L时则要加入CaclZ，使其生成磷酸钙沉淀，然后水解回收钒。随后往母液中加入硝酸铅，沉淀出铬酸铅。此工艺的钒、铬和磷的回收率分别为85%、65%
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