Five kinds of nanosized titania were used as photocatalysts for the hydrolysis of methylacetylene and characterized by X-ray diffraction and diffuse reflecta nce UV-Vis absorption spectroscopy.

In order to discuss the regioselectivity of nitrile oxide 1,3-dipolar cycloaddition to propyne, 1,3-dipolar cycloaddition reaction of substituted nitrile oxide (RCNO, R=F, NO2, OCH3, OH, COOCH3, CHO, CONH2, H, CH3) with propyne was studied using density functional theory at the 6-311++G** level, and the reaction rates were calculated at different temperature from 200 to 400 K.

Theoretic studies on dissociation of propyne at 157 nm were performed.

The reaction results of the selective hydrogenation of MethylAcetylene(propyne)and Propadiene(MAPD) in C 3 distillate by catalytic distillation were investigated with randomlypacked structure of packingtype catalyst, the combined structure of sieve tray and packingtype catalyst as well as the structure with interlaced packing and ordinary catalyst.

The resulting imidazoline as an inhibitor was compounded with propiolic alcohol and butynediol.

The anodic oxidation reactions of butynediol and propiolic alcohol in the bright nickel electroplating were studied using ultraviolet spectrophotometry.

It is found in the experiments that the synergetic effect of propiolic alcohol,potassium iodide and quaternary ammonium salt has a good corrosion inhibition for zinc in 0.