查询词典 catalysis

Methods:The glucose hydrolyzed from starch by amylopsin catalysis was determined by iodimetry.

利用胰淀粉酶催化淀粉水解，用碘量法测定水解产物葡萄糖的量以测定酶活力。

By analyzing the differences between acidic and basic catalytic action in this transesterificatios, it is considered that the main cause of yielding an anisole by-product is due to the basic catalysis, a Lewis acidic catalyst is helpful for the selective DPC formation.

通过分析酸碱催化作用在酯交换反应中的差异，认为碱催化是副产物苯甲醚生成的主要原因，Lewis酸性的催化剂有利于碳酸二苯酯的高选择性。

Methane non-oxidative aromatization is very significant to utilization of resources and science of catalysis.

甲烷无氧芳构化反应对能源利用和催化科学均具有重要意义。

Part one we reviewed the synthesis of α-substituted aryl acetonitriles catalyzed by phase transfer catalysis.

第一部分综述了合成α-取代芳香乙腈的相转移催化反应的研究。

The self-supported chiral catalysts as novel immobilization of homogeneous catalysts strategy demonstrated excellent enantioselectivities in heterogeneous catalysis of a variety of asymmetric reactions.

近年来，手性自负载催化剂作为一种新的负载模式，已经成功地应用于一些非均相催化的不对称反应中。

Autocatalysis:Catalysis of a chemical reaction by one of the products of the reaction.

在这个过程中发生了某种化学反应，这反应消耗了金属板和溶液中的化学药品。

In the chapter 2 of this dissertation, we studied the cross-coupling reaction of aryl halides and vinyl iodides with sodium azide under the catalysis of copper and amino acids.

在4-碘茴香醚与叠氮化钠的模型反应中，我们考察了不同溶剂、氨基酸、碱、铜盐对反应的影响，最后筛选出了最佳的反应条件：CuⅠ/脯氨酸/NaOH/DMSO。

Applied conductance law is kinetic to reaction of bee glue enzymatic catalysis undertake study, result discovery, in bee glue - in enzymatic system, be in without oscillation phenomenon; bee glue - enzymatic - inside NaCl system, electrical conductivity lifts quickly, appeared only 3 more apparent fluctuant peaks, accumulate period longer, it is 10~20 Min about, accumulate period afterwards, electrical conductivity lifts quickly reduce quickly again, fluctuant and gently; is in after 40 Min bee glue - enzymatic - inside KCl system, response is quick, oscillation period is 20 Min about, the wave motion after 30 Min is slow till platform reacts,stop.

应用电导法对蜂胶酶催化反应动力学进行探究，结果发现，在蜂胶-酶体系中，无振荡现象；在蜂胶-酶-NaCl体系内，电导率急剧升高，只出现了3个比较明显的波动峰，积累期较长，大约为10~20 min，积累期过后，电导率迅速升高又迅速降低，40 min后波动平缓；在蜂胶-酶-KCl体系内，反应迅速，振荡期大约为20 min，30 min后波动缓慢直至平台反应终止。

Dozens of analogues with modification at benzene ring were synthesized by using a metal-catalysis coupling.

另外，采用金属催化的偶联反应我们合成了苯环区取代的一系列类似物。

Palladium Catalysis Regioselective Benzofuran Derivative Synthesis; Novel Metal Free Organic Dyes for Dye-Sensitized Solar Cells

论文名称钯催化呋喃衍生物结构异构物的选择性合成；新型有机染料对於染料敏化太阳能电池

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。