介绍了用CO作吸附质,在室温下脉冲吸附测定铜催化剂中活性铜表面积的方法。
A determination method of active surface areas of copper-containing catalysts by pulse adsorption at an ambient temperature with co as adsorbate is described in the present paper.
甲酸甲酯氢解制甲醇这一步骤的难点在于环境友好的低温高活性铜基催化剂的研制。
Hydrogenolysis of methyl formate to methanol was the rate-determining process and was mainly catalyzed by nickel-based or copper-based catalyst system.
介绍了所制备的高活性铜催化剂用于气相催化加氢还原制备邻(对)甲苯胺的研究。
A highly active copper catalyst for synthesis of o - (p -) toluidine via vapor-phase catalytic hydrogenation was prepared.
但是通过加入氮气和铜,会改变二氧化钛在可见光下的催化活性。
But adding nitrogen and copper to the mix shifts the preference of the titania tubes to visible light, Grimes says.
铜是人体必需的微量元素之一,是胎膜中胶原纤维发育成熟的关键酶赖氨酰氧化酶的活性辅基。
Copper is one of essential trace elements for human, acting as an active agon of lysyloxidase which is critical enzyme for collagen maturation.
试验表明:活性硫改善了齿轮油的极压性,对抑制铜腐蚀性、防锈性能和抗氧化性能均有不利的影响。
It is concluded that active sulfur compounds may improve the oil's EP property but harm inhibition of copper corrosion, antirust property and anti-oxidation stability.
研究了铜离子对底泥和活性污泥硝化活性的抑制作用的差异。
The inhibition of copper ion on nitrification activity of nitrifying bacteria in sediment and activated sludge were studied.
纳米晶铜表面原子和晶界原子具有更高的表面活性,钝化能力大大提高,同时钝化膜的溶解速度加大。
Surface atoms and intergranular atoms of nc copper have high activity, and that the passivation ability and the dissolution rate of passive film are increased.
通过铜铬氧化物催化剂用于豆油的选择氢化,研究了制备方法及氢化条件对催化剂活性的影响。
The effects of catalyst preparation and hydrogenation conditions on the activity of copper-chromium oxide catalysts for selective hydrogenation of soybean oil was investigated.
用自身对照方法,观察服灵芝前后铅、锌、铜、锰、铁、丙二醛和过氧歧化酶(SOD)活性的改变。
The effect of fonr trace elements, malonaldehyde(MDA )and superoxide dismutase (SOD) activity were observed with with. self-control method.
通过实验发现,加氢催化剂的活性和产物收率与催化剂中铜晶粒大小及表面积有着直接的关系。
Experiments find activity of hydrogenation catalysts and product yields have direct relation with the copper crystalline size and surface area.
结果发现:在低剂量范围内,随着乙酸铜剂量的增加红细胞的微核率及核异常率逐渐增加、CAT活性升高,白细胞的数目则下降;
The results show that the rate of micronucleus and nuclear abnormity, and CAT activity increased gradually, the number of WBC descended in low dosage range.
用所得的胶体铜催化丙烯腈水合制备丙烯酰胺具有很高的活性。
The colloidal copper is a highly active catalyst for the hydration of acrylonitrile to produce acrylamide.
结论:铜缺乏较为严重地影响了奶牛红细胞及组织膜atp酶的活性,抑制了这些组织的正常生理功能。
Conclusion: Copper deficiency had severe effect on the activities of the membrane ATPase of red cell and tissue in calves and restrained the normal physiological function of these tissue.
活性硫化镍是一种用于镍电解阳极液除铜的超细微粒物质。
Activated nickle sulfide is a kind of superfine particle used in the removing copper of nickle electrolysis anode solution.
阐述了漆酶的研究进展,对漆酶研究中的铜离子活性中心、三维结构和催化机理研究作了重点阐述。
The progress on the research of laccases is reviewed in this paper, of which the active centre of copper ions, the three-dimensional structure of protein, and catalytic mechanism are emphasized.
研究了胶体铜催化丙烯腈水合制丙烯酰胺的高选择性与活性中心结构的关系。
The relationship between the high selectivity of catalysis and the structure of active centre of copper colloidal catalyst in selective hydration of acrylonitrile to acrylamide was studied.
铜离子是反应的活性中心。
主要活性成分是铜和烷基铵化合物,活性成分的含量为15%。
The main active ingredient is copper and alkyl ammonium compounds, the active ingredient content of 15%.
结果表明,把血浆铜兰蛋白和转铁蛋白ESR信号幅度之比作为评价血浆抗氧化活性的一个重要参数是可行的。
It has been shown that it is practicable to take ratio of ESR signal amplitudes of ceruloplasmin -to-transferrin as a cardinal parameter for evaluation of the antioxidant activity of serum.
由于纳米颗粒具有特殊性能和很大的活性,纳米钨铜复合材料的制备尤为特殊。
And as nanoparticles manifest some unusual properties and intensive activity, the preparation methods for nano W-Cu composite material is more particular.
本文介绍采用络合酸浸法以废甲醇催化剂为原料制备五水硫酸铜和活性氧化锌的新工艺。
A new process which produce copper sulfate pentahydrate and activated zinc oxide from the used catalyst by soaking in complex acid has been introduced in this paper.
采用卵蛋白表面活性剂,经包覆反应过程中新生金属铜微粒制作出微胶囊铜。
Microcapsule copper is made by using surfactant of egg glairs to enwrap fresh copper particle produced in reaction.
本文研究了用含有活性剂( 过二硫酸铵、高锰酸钾)的碳氨液从辉铜矿中浸取铜。
This paper has been studied to soak from the Chalcocite to take copper with the sal volatile containing the active reagent (ammonium peroxydisulphate or potassium permanganate).
结果表明:这两种铜卟啉配合物具有较好的仿酶活性。
It shows the metalloporphyrin has obvious biological activity of mimic enzymes.
表面活性剂铜配合物具有较好的水溶性和表面活性,不但在DM F溶剂中有效催化苯甲醇、安息香的空气氧化反应,而且在稀碱溶液中形成的金属胶束也可催化氧化苯甲醇。
Cu complex of the surfactant have water soluble ability and surface activity, can catalyze the air oxidation of benzyl alcohol or Benzoin not only in DMF solution but also in alkali water solution.
补充铁铜后晕船大鼠高岭土摄入量减少,脑内铁铜水平提高,脑内与铁铜相关的酶活性普遍改善。
Supplement of iron and copper decreased kaolin intake, increased iron and copper levels and ameliorated these enzyme activities in brain.
通过重组SOD技术使失去铜锌离子失活的酶蛋白恢复酶的催化活性。
Furthermore, the inactivated enzyme losing metal ion is reactivated by the technology of SOD recomposition.
用一步并流共沉淀法制备了一种高活性合成甲醇铜基催化剂。
A high activity Cu base catalyst has been prepared for methanol synthesis by one step parallel flow coprecipitating method.
测定小鼠部分免疫学指标及抗氧化酶活性,以研究赖氨酸铜对小鼠免疫功能和抗氧化酶活性的影响。
Some immunity index and the activity of anti-oxidation enzymes were measured to study the effect of Cu-Lys on the immunity and the activity of anti-oxidation enzyme in serum of mice.
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