Detection of electron donor in polypropylene alloy catalyst within reactor

Gas chromatography was used to analyze the electron donor content in the polypropylene alloy catalyst within reactor. Dibutyl phthalate was chosen as the internal standard, and n-heptane as the solvent. OV-1 capillary column was used as the column and nitrogen as the carrier gas. The temperature of column was 200 ℃, and the temperature of injection port and FID detector was both 250 ℃. The injection amount was 0.2 μL. The results show that the measured components are separated well, the analysis can be determined within 10 mins.The method is sensitive, fast and convenient, and can be used for the detection of electron donor in polypropylene alloy catalyst within reactor.