active valence
英 [ˈæktɪv ˈvæləns]
美 [ˈæktɪv ˈveɪləns]
有效化合价
双语例句
- Furthermore, investigations of various catalysts by BET test, XRD, XPS analysis showed that lots of active points, the diverse chemical valence states of cerium in the catalysts and plentiful surface adsorptive oxygen enhanced the activity of catalysts.
对催化剂进行了比表面积、XRD和XPS测试，结果表明，高效的催化剂具有较多的活性位、催化剂粉末体系Ce的变价特性以及大量的表面吸附氧。 - Because the reaction forming the active site was quick, phen and FeCl 3 were added before Al ( I Bu) 3 to prevent Fe 3+ from reducing to lower valence.
因为生成活性位的反应是快速反应，只有phen、FeCl3先于Al（i-Bu）3加入，才能有效阻止深度还原。