The mineralogical characteristics of the cymrite are studied initially by using microscope , X-ray powder diffraction, infrared spectrum and electron microprobe.

MCM-56 molecular sieve is a special porous framework silica-alumina zeolite It has high thermal stability, high surface area and large sorption capacity The advances in synthesis and application of MCM-56 molecular sieve in industrial catalysis were reviewe

The Melt Casting Method is an Improtant Route of the Industrialization for the Gr-Al-SiAlloy Composites;