查询词典 PT boat

Results showed that the kinetics of photocatalytic degradation of ethylene by TiO2/ACF desoposited Pt in the simulated cold storage environment for horticultural products could be described using the pseudo first-order equation. The prepared TiO2/ACF-Pt, in the process of which Pt was initially deposited on the surface of ACF and then TiO2 was coated, would promote the activity of ethylene decomposing. When ion sputtering time was 60 seconds (Pt/Ti atomic concentration ratio was 0.112), the apparent rate constant of the reaction of TiO2/ACF-Pt was 1.16 times as much as that of TiO2/ACF. The micrographic structure of ACF was not damaged and an excessive porous structure, which was contributive to absorbing the diluted ethylene, was obtained by the way of ion sputtering Pt.

结果表明：在模拟园艺产品冷藏环境中，TiO2 /ACF-Pt光催化降解乙烯的动力学可用表观一级速率方程来描述；ACF表面先溅射沉积Pt，再进行TiO2附着方案，能提高降解乙烯的能力，当溅射时间为60 s（Pt/Ti原子浓度比为0.112）时，表观一级速率常数是未溅射Pt的1.16倍；TiO2/ACF-Pt的制备方法，对ACF形貌结构没有破坏，并能得到有利于对微量乙烯的吸附的多孔结构。

The introduction of Pt buffer layer can also raise the coercivity in sputtered Co-Pt alloy films but the Pt films must have good FCC (111) texture. The analysis of XRD and TEM shows that there exists ordered CoPt〓 Ll〓 phase in Co-Pt alloy films.

Pt缓冲层的引入可以进一步提高溅射Co-Pt合金膜的矫顽力，但Pt膜必须具有良好的FCC（111）织构。X射线和TEM研究发现在Co-Pt合金膜中存在有序的CoPt〓 Ll〓合金相。

In this study, SiC as a carrier, Pt reactive component, Prepared by impregnating a series of Pt/SiC catalyst and influence of temperature, space velocity, Pt loading and auxiliaries Pt/SiC catalyst for the activity.

本研究以碳化硅为载体，Pt为活性组分，通过浸渍法制备了一系列的Pt/SiC催化剂，并考察了焙烧温度、空速、Pt负载量以及助剂对Pt/SiC催化剂的活性的影响。

It was found that the Pt films in Pt/C electrodes possess fcc structure,and that the catalytical activity of Pt films deposited on the graphite cloths is better than that of Pt films on the carbon papers.

结果表明石墨纤维布上沉积铂的电极性能优于碳纸上沉积铂的电极；采用高束电压高束电流情况下沉积的铂电极电化学性能又有显著提高。

The preparation method is characterized in that:(1) at minus 10 DEG C to 10 DEG C, a chloroauric acid solution with a certain concentration is added into a nano-Pt/C catalyst by ultrasonic or stirring mixture and the atomic ratio of Pt to Au is controlled between 18:1 and 5:1;(2) a small amount of monohydric alcohol or dihydric alcohol or trihydric alcohol of C1-C3 is added and is stirred at minus 10 DEG C to 10 DEG C for 10 min to 5h, so as to prepare the carbon-loading Pt-Au bimetallic nano electro-catalyst;(3) if necessary, the catalyst obtained by the step (2) is treated for 0.5 to 4h at high temperature ranging from 100 DEG C to 700 DEG C in the inert or reducing atmosphere, so as to adjust and control the grain size of the Pt-Au bimetallic nano electro-catalyst.

本发明涉及了一种高稳定性碳载Pt-Au双金属纳米电催化剂的制备方法，其特征在于：(1)在-10～10℃中，将一定浓度氯金酸溶液加入到纳米Pt/C催化剂中经超声或搅拌混合，控制Pt∶Au的原子比为18∶1-5∶1；(2)添加少量C 1 -C 3 的一元、二元或三元醇类，在-10～10℃下搅拌10min-5h，制备了碳载铂金双金属纳米电催化剂；(3)视需要，可将步骤(2)得到的催化剂在惰性气氛或还原气氛中经100～700℃高温处理0.5-4h，可调控Pt-Au/C双金属纳米催化剂的粒径。

The results show that almost 88% Au and 97% Ag are enriched in the crude Au powder and crude Ag powder, respectively. However, Pt and Pd distribute scatteredly in the Pt-Pd concentrate, AgCl precipitated solution, Pt-Pd precipitated solution and Ag leached residue, with the amounts of Pt and Pd of 53%, 14%, 26% and 8%, respectively.

结果表明：在目前阳极泥处理工艺中，金、银的分布比较集中，粗金粉富集了阳极泥中近88%的金；97%左右的银集中于粗银粉中；铂与钯分布较分散，铂钯精矿、沉氯化银后液、析铂钯后液以及分银渣中都含有金属铂和钯，其含量都分别在53%、14%、26%和8%左右。

Currently,80 percent of houseboat,police boat,frontier defense boat,seashell breeding boat in Pan Jin Area and 95 percent of houseboat,traffic boat,transport boat,merchant boat,fishing govern boat in Ying Kou Area are only manufactured and repaired in our company.

如今，盘锦地区80%的游艇、渔政、公安、边防、贝类养护船只和营口地区95%的游艇、交通、运输、客商、渔政等船只在我厂制造和维修。

It was observed that the Pt 4f binding energies in the same-sized Pt nanoclusters modified with alkylamine, alkylthiol, PVP, PVA or PPh〓 increase by 0.5-0.8eV relative to those of bulk Pt.

观察到具有相同金属尺寸的Pt金属内核而外层配体分别为长链胺、长链硫醇、PVP、PVA或PPh〓的纳米簇的Pt 4f电子结合能相对于块体Pt样品升高了0.5-0.8eV。

Using mordern physical chemistry techniques (such as XRD、 TG-DTA、 IR、 XPS and 〓Xe-NMR)、 chemical adsorption techniques (NH〓-TPD、 H〓-TPD、 TPO、 TPR etc.) and pulse flow microreaction of n-hexane、 methylcyclopentene and n-hexane containing 0.2ppm thiophene, we studied mainly the following three points:(1). the changes occured during the calcination pretreatment of Pt ammine complex supported on β and L zeolites;(2). the effect of structure and acidity-basicity of zeolite on the dispersion and electron state of Pt particles; and (3). the influence of second metal component on the reactivity of nhexane aromatization and sulphur-resistance of Pt/L zeolite catalyst. Several interesting and valuable results are obtained and summerized as follows

本论文运用各种近代物理表征方法(XRD、BET、TG-DTA、IR、XPS和〓Xe-NMR)、化学吸附技术(NH〓-TPD、H〓-TPD、TPO、TPR等)和正己烷、甲基环戊烷及含噻吩正己烷的脉冲微反等方法，着重研究了(1)载Pt的β和L沸石在分解预处理过程中发生的变化；(2)沸石载体结构及酸碱性对Pt粒子分散及电子状态的影响；(3)第二金属组份对载Pt沸石催化剂上正己烷芳构化及抗硫性能的影响等，得到了某些有意义的结果。

The local ordered CoPt〓 Ll〓 phase with good FCC (111) crystalline orientation, which exists at the interfaces of multilayers and in alloy films, was considered to contribute to the PMA in Co/Pt multilayer and Co-Pt alloy films. But the appearance of large amount of ordered CoPt〓 Ll〓 phase or completely disordered Co-Pt phase will result in the decrease in PMA.

Co/Pt多层膜界面处或Co-Pt合金膜中具有FCC（111）织构特征的局部有序CoPt〓 Ll〓合金相的形成被认为可能会对多层膜和合金膜中的垂直磁各向异性作出贡献，但大量CoPt〓 Ll〓有序相或大量完全无序Co-Pt合金相的生成都会导致垂直各向异性的下降。

Warden: That's a beautiful dog, but don't bring her again.

那是条漂亮的狗，但是不要再把她带来了。

You get up in the morning – no hangover!

你第二天早上起来的时候—不会宿醉！