The results showed that phosphotungstic acid -, PW/C and PW/SiO were eminent catalysts and had no pollution.
The results showed that phosphotungstic acid -, PW/C and PW/SiO were eminent catalysts and had no pollution.
实验结果显示:磷钨杂多酸、PW_ /C和PW_ /SiO_是优良的酯化催化剂,对环境无污染。