Study on preparation of magnesia-alumina spinel additive and its performances of catalytic olefin reduction;

Synthesis of magnesia-alumina spinel refractories;

Preparation of magnesia-alumina spinel and its application in catalytic reaction;

The fused magnesia,magnesia alumina spinel and α-Al2O3 were put in the ground substance for developing the stability of thermal shock.

Thermodynamic analysis and hot condition experiment were used to study the effects of temperature of molten steel and mass fraction of carbon on the corrosion of magnesia alumina spinel refractory,and the corrosion mechanism was discussed.

The effect of preparation techniques to the crystallization of glass-ceramic was studied through DTA,XRD and TEM,and transparent glass-ceramic that contains magnesium-aluminum spinel nanocrystallites were produced.

The spinel matrix composites reinforced by surface modified carbon fibers were prepared, and the carbon fiber was coated with Ni,Cu and Cu+Ni by electroless plating process.

Manufacture of high-purity compact spinel clinker by sintering process was investigated , the properties of spinel clinker were introduced, and the effects dence of some technological elements on the manufacture of spinel clinker were discused.

Supported water gas shift (WGS) catalysts promoted by lanthanide oxides were prepared by adsorbing γ-Fe_2O_3 colloid onto MgAl_2O_4 spinel.

In the thesis, a series of Ru-based and Au-based catalysts were prepared, which supportedon MgAl_2O_4 spinel and promoted by alkali-metal oxide and/or rare-earth oxide.