查询词典 heterolytic

The reaction with heterolytic mechanism is retarded severely in supercritical water, so do the hydrolysis of methyl acetate.

近临界水极性的巨大变化，使得异裂机理类型的醋酸甲酯水解在超临界水中反应速率反而大幅下降，实验数据显示，水解反应温度不宜超过水的临界点。

In the heterolytic electrophilic substitution, the stability of the intermediate strongly affects the activation energy.

P101 在异裂亲电取代反应中，中间产物的稳定性对反应活化能有很大影响。

In chaper 10,the heterolytic cleavage of(CH_3)_3CCl and(CH_3)_3SiCl in aqueous solution are studied by VBPCM method.

第十章利用VBPCM方法研究(CH_3)_3CCl和(CH_3)_3SiCl分子的S_N1解离反应，揭示了这两种分子解离过程中C-Cl和Si-Cl键的化学键本质。

It may be concluded that the Fe_2O_3/MgO sites,localized on Mg atoms,are acidic(presumably Lewis-type) in nature and that these results provide evidence for the heterolytic decay of the hydroperoxide to phenol and acetone.It was found that the activity of the catalysts had relationship with their redox behaviour.

氧化催化剂的活性与其氧化还原性具有一定的相关性，催化剂还原性越好，越容易导致异丙苯过氧化氢分解，进而促进异丙苯的转化。

The results showed that though apoHb could be reconstituted with all FePs, it showed different functions. Binding of apoHb with hemin can enhance the heterolytic cleavage of O-O bond of H〓O〓, but inhibiting the cleavage when FeTCPP and FeTPPS〓 were used instead of hemin. The binding of apoHb with FeTTMAPP showed negligible influence on the cleavage of O-O bond in H〓O〓.

结果表明，虽然具有阴离子基团的FeTCPP和FeTPPS〓能够在天然血红蛋白中辅基位置的附近与脱辅基血红蛋白结合，但是由于结构上与天然辅基的差别，使得血红素蛋白中相应的氨基酸残基不能起到有效的作用，因此不但不能提高反而抑制了其过氧化物酶活性；而对于具有阳离子基团的FeTTMAPP，脱辅基血红蛋白对其活性没有明显的影响。

Through the consideration of the triplet-state configuration of d-TMA and the effect of heterolytic reaction on system entropy value,△H and △S of the dissociation reaction of d-TMA were accurately calculated at the same time. The plot of lnK vs l/T had a perfectly linear relation: lnK=-9624.4363/T+20.2303, and the correlation coefficient R^2=1.0000, which agreed quite well with the predecessors' experimental results.

通过考察d-TMA三线态构型和异裂反应对系统熵值的影响，准确计算了d-TMA离解反应的△H和△S以lnK对l/T作图，两者之间具有很好的线性关系：lnK=-9624.4363/T+20.2303，相关系数R^2=1.0000，与前人实验结果相当一致。

The reaction under the catalysis of 10%Fe_2O_3-MgO stoped quickly.It may be concluded that the Fe_2O_3/MgO sites,localized on Mg atoms,are acidic(presumably Lewis-type) in nature and that these results provide evidence for the heterolytic decay of the hydroperoxide to phenol and acetone.

采用共沉淀法制备了催化剂M_xO_y-MgO(M=Ni、Fe、Co、Cu)，并用X射线衍射仪、程序升温还原(H_2-TPR)以及X射线光电子能谱等对催化剂进行了表征，并与其催化性能进行了关联。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。