The forming process of Mg/Sn/W composite oxide catalysts was studied.The characteristics of the catalysts were determined by using X-ray diffraction(XRD),su
Acid-soluble collagen(ASC)and pepsin-soluble collagen(PSC)were successfully isolated from the skin of Hybrid sturgeon.The yields of ASC and PSC based on the
Two series of Mn/beta and Mn/ZSM-5 catalysts were prepared with different precursors using wet impregnation method,and the catalytic behaviors of these Mn-b