<正>The methanol-to-propylene catalyst developed by the Research Institute of Datang Chemical Company has passed the research achievement appraisal sponsored by
(Y, Gd)BxV1- xO4-x :Eu3 + phosphors were prepared by solid state reaction. The red emission color purity of (Y, Gd)Bx V1 - x O4-x :Eu3 + phosphor is much better
By using a mixture of N2 and H2S as the simulated APG(associated petroleum gas), the desulfurization experiment was performed in a cross-flow rotating packed be
In order to study the effect of alloy component on magnetic properties of NdFeB magnets, the experiment schemes are carried out by the uniform design theory, an
Composite coatings made of nano-Y203/cobalt-based alloy and produced by crosscurrent CO2 laser on Ni-based superalloy are introduced. Cross-section or surface o
Using alkalescent ammonium(AAC)as precipitatnt, the diameter of nano La2O3 powder with diameter in 80 nm and less was prepared by the method of homogeneous prec