N - hydroxyethylpyrrolidone ( NHP ) was synthesized from � � - butyrolactone and ethanolamine on Y molecular sieve catalyst by two steps.以改性Y分子筛为催化剂,γ-丁内酯和乙醇胺为原料,采用γ - 丁内酯法两步合成N - 羟乙基吡咯烷酮 ( NHP )....

n.丁内酯...

butyrolactone的音标：butyrolactone的英式发音音标为：[betɪrɒ'læktəʊn]butyrolactone的美式发音音标为：[betɪrɒ'læktoʊn]...