歧化

Of special interest is a suigeroxide dismutase[7] from E.Coli which contains Mnat an unknown binding site and redox catalyses the disproportionation of O2 to yield O2 and H2O.

Of特殊利益是suigeroxide氧化物歧化酶[7从大肠杆菌]其中载锰在一个未知的结合部位和催化氧化还原的氧产生歧化O2和H2O。

The super acid SO〓/ZrO〓, due to its strong acidity, favores the dealkylation and disproportionatin of 4-TBC or/and DTBC, preventing the increase of the selectivity for 4-TBC.

而固体超强酸SO〓/ZrO〓由于酸性较强，易于发生4-叔丁基邻苯二酚和3，5-二叔丁基邻苯二酚的脱烷基反应和4-叔丁基邻苯二酚的歧化反应，因此不利于提高4-叔丁基邻苯二酚的产率。

After analyzing the reaction mechanism through literature, we think the reaction from diethanolamine to iminodiatic salt is composed of two steps—reaction from alcohol to aldehyde and the disproportionation reaction of the aldehyde. The selectivity, conversion, rate of this reaction are mainly attributed to the capability of this catalyst.

通过查阅文献资料，分析了反应机理，认为二乙醇胺脱氢生成酸是由两步反应组成─醇脱氢生成醛与醛的歧化，催化剂的性能是影响反应转化率、选择性及反应速度的主要因素，确定了采用沉淀法制备Cu/ZrO2做催化剂。

To further extend the scope of this type Cannizzaro disproportionation reaction and the reactivity of enolate ligand in complex with aldehyde,we designed to synthesis new rare earth complexes containing arylamido and.enolate mixed ligands,studied their reactivity with aromatic aldehydes for the disproportionation reaction.

为了进一步探索这种歧化反应的应用范围及配合物中作为配体的乙烯醇基与醛的反应性，我们设计合成了含胺基、乙烯醇基混合配体的新型稀土配合物，并研究了其与芳香醛的反应。

Thirdly,in the view of some different results between the reaction of complexes(2)、(3)and[(Me_3Si)_2N]_3LnLi_3 with aromatic aldehydes, the reaction of 2 equiv of aromatic aldehydes with 1 equiv of lithium amide(1) catalyzed by the YCl_3 was subsequently studied,and better yields of the corresponding amides and alcohols can be isolated.These results indicated that the enolate ligand in complexes(2)、(3)may have impact on the Cannizzaro disproportionation reaction.

第三，鉴于上述配合物2、3和[(Me_3Si_2)2_N]_3LnLi_3与芳香醛反应结果上的一些差别，我们又以三氯化钇为催化剂，将两当量的芳香醛与一当量化合物1的锂盐直接进行反应，结果以较好的产率得到了相应的酰胺和醇，这说明配合物2、3中所含的乙烯醇基可能对此Cannizzaro-型歧化反应存在一定的影响。

The optimal conditions for the target product were obtained: reaction temperature 110 ℃, reaction time 1.5 h, NaOH dosage 1.2 g,molar ratio 3:1(disproportionated rosin glycide ester: the hydroxyl group per D-glucose unit), microwave power 700 W.

目标产物的最佳合成条件：反应温度110℃，反应时间1.5 h，NaOH用量1.2 g，摩尔比3：1（歧化松香缩水甘油酯：葡萄糖单元中羟基数）及微波功率700 W。

The reaction of disproportionation of gum rosin catalyzed by AH nonnoble metal catalyst was studied, and the effects of reaction temperature, reaction time, particle size of catalyst, and stir speed were investigated.

用AH型非贵金属催化剂催化松香歧化反应，考察了搅拌速率，催化剂粒度，反应温度，反应时间对反应的影响，建立了动力学方程。

The effects of d isproportionated potassium rosinate on the polymerization of cold ESBR and the stability of the latex were studied.

研究了以歧化松香酸钾皂作为主乳化剂时，对低温乳液聚合丁苯橡胶的聚合及胶乳稳定性的影响。

Liver function tests (biochemical marker: GOT, GPT, SALP, total protein, total albumin, TG, Cholesterol; antioxidative enzymes: SOD, catalase GSH, GSH-Px, GSH-Rd, MDA-TBA) were performed, and liver and body weights were measured.

肝功能的评估分别有ALT、AST、碱性磷酸、总蛋白、白蛋白、三酸甘油脂、胆固醇，以及抗氧化评估：超氧歧化、过氧化氢、GSH-Px、GSH-Rd、谷胱甘、MDA-TBA，并且测量小鼠体重及肝重。

The mechanism of redistribution of trichloromethyl and chlorotrimethyl silane catalyzed by ZnCl2 has been obtained by calculation.

通过计算，得出了ZnCl2催化的一甲基三氯硅烷和三甲基氯硅烷歧化反应的机理，得出了IRC曲线和过渡态的虚振动模式。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐