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The effect of mesh TiO〓/Ti used to treat rhodamine B and rose bengal was equivalent to that of 0.1~0.3% TiO〓 suspensions, it indicated that the photoelectrocatalytic oxidation system of mesh TiO〓/Ti could replace the system in above concentration condition basically. The content, which is similar to the result of this study, has not been reported in present domestic and oversea researches of fixed TiO〓 catalysts.

用丝网TiO〓/Ti催化剂光电催化降解若丹明B和虎红,其处理效果相当于TiO〓浓度为0.1-0.3%的悬浆体系,表明以丝网TiO〓/Ti为催化剂的光电催化氧化体系基本上可以代替上述浓度条件下的TiO〓悬浆体系使用,在目前国内外固定态TiO〓催化剂研究中,尚无类似报道。

The present paper mainly focused on the phase equilibria and crystallization separation of the multi-component aqueous salt system for cleaner production of chromium trioxide in the electro-synthesis process. And these diagrams of the above system was studied for the first time.

本文研究了该产业链中电催化法生产铬酸酐清洁工艺中多元水盐体系相平衡,首次构筑了体系相图,建立了铬酸酐多元复杂体系的结晶分离方法,为电催化法生产铬酸酐工艺路线的设计及优化提供理论依据,论文的主要内容包括如下几个方面: 1。

The efficacy of photocatalytic oxidation was relative to the number of dip-coated plate, which 2 and above plates was superior to one plate, and also vertical plane to the light source was more efficient than parallel plane. The reaction rate constant showed the color removal decreased as initial MB concentration was raised. As for efficiency of catalyst durability, it was found that TiO2 dip-coated stainless steel plate performed 95% color removal at 5ppm MB even after 4 times repeated usage, which showed favorable durability. However, when the concentration up to 10 ppm, the color removal decreased as the used counts was raised.

脱色率和钢网片数有关,钢网片数超过2片以上时,其光催化效能优於单片者;光催化效能与钢网摆放方式或光源入射的角度有关,与光源垂直摆放的脱色率优於与光源平行摆放者;由反应速率常数得知,反应物之脱色率随著反应物初始浓度的提升而递减:在耐用性方面,亚甲基蓝5ppm在重覆使用四次后,其六个小时脱色率皆维持95%,显示自制光触媒钢网之耐用性颇佳,若将反应物浓度提升至100ppm,其脱色率随著使用次数之增加而递减。

Using the con- tinuous current law to deposit Pt and Fe, then through the high temperature heat treatment , the electrodes were prepared and characterized by scanning electronic microscope, X-ray diffraction, energy disperse spectroscope as well as inductively coupled plasma.

将预处理后的钛片作为电极基体,采用恒电流法沉积Pt和Fe,通过高温热处理得到Ti/Pt-Fe电极,通过扫描电镜、X射线衍射、电子能谱以及等离子发射光谱等方法对所制备电极表面形貌、组分的合金化程度、催化层成分组成以及电极寿命等进行了表征;在煤浆电解过程中,采用两电极体系,对所制备电极的电催化活性进行了测试。

The results indicated that the binding constant of CoPc/SnO2 was two-order higher than that of CoPc/SnO2 synthesized by dipping process, marked as d, while the numbers of binding sites were comparable in both samples.

结果表明,在结合位点数相当的情况下, CoPc/SnO2结合常数比 CoPc/SnO2的高两个数量级,前者的光催化效率亦比后者高 32.5%(光照 150 min),且 CoPc/SnO2光催化稳定性较高。

Because of the bonded crown ring the catalytic activity of complexes can be improved and the induce period of the oxidation for p-xylene to p-toluic acid was shortened from~ 10h to 0.5~5h, the fashion and position of the bonded crown ring as well as the distance between the crown ring and activity center have distinct influence on the catalytic activity of complexes.

结果表明:1。键连的冠醚环均能显著提高催化活性,并大大缩短反应诱导期5-10h,使TOF从21~60提高到152~222,约增加了5~7倍;冠环的键连方式和部位以及与活性中心的距离对催化活性影响明显;2。

This paper investigates the catalysis of D-72 strong acid cation exchange resin on the synthesis of acetals,and systematically discusses the influence of reaction factors on the catalysis reaction.

研究了强酸性阳离子交换树脂对缩醛合成反应的催化作用,系统地探讨了各反应因素对反应的影响,研究发现,D-72强酸性阳离子交换树脂具有较高的催化活性,并能重复使用。

But with the increase of the three-way catalytic converter's work time, the conversion efficiency descents constant

但是随着三元催化转化器使用时间的不断延长,其转化效率不断地下降,因而,对三元催化转化器转化效率的实时监控已成为人们关注和研究的问题。

The most important factor that determines cracking effect of dolomites is their specific surface area after calcination. The bigger the specific surface area the better is catalysis effect.

决定白云石催化裂解效果优劣的最重要的因素是白云煅烧处理后比表面积的大小,比表面积越大,催化效果越好。

The influence of chromatographic conditions (carrier gas and oven temperature) on the separation was investigated.

考察了色谱条件对催化汽油中各种烃类以及硫化物分离的影响,在定性了300多个烃类组分的同时,定性了催化汽油中的60多个硫化物。

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