金属氢

All the compounds are characterized by IR and elemental analysis.we design and prepare a bipyridinium supramolecular compound and six coordination compounds, which are also characterized by IR, elemental analysis and X-ray structure analysis. According to X-ray structure analysis, hydrogen bonds and n-n stocking interactions participate in the architecture of three-dimensional framework [H2L1 (NO3)2 (H2O)2]n; one-dimensional zigzag coordination polymer [Hgl21.5CH3OH]n; binuclear metallamacrocycle (HgI2L2)2 3H2O; helical double-stranded one-dimensional coordination polymer [Co2(L2)2-2CH3OH]n; double-stranded one-dimensional coordination polymer [Co2(L3)2-CH3OH-CH3CN]n; and three-dimensional compound [Cu(C5H4NCOO)2(H2O)2]-H2O with hydrogen bonds, three-dimensional coordination polymer {[Cd(C5H6NCOO)2H2O]-DMF}n, which are indirectly obtained from the precursor ligand L3 through metal ion induced the hydrolysis of diamide and self-assembled with the hydrolyzate.

我们首次合成了一个双吡啶鎓超分子化合物和六个过渡金属配合物，并通过IR谱，元素分析和X-ray晶体衍射分析对它们进行了表征。X-ray晶体结构分析表明：超分子化合物[H_2L1·(NO_3)_2·(H_2O)_2]_n是由多种氢键和芳香环间的π-π堆积作用构建的三维无限结构；[HgI_2(L1)·1.5CH_3OH]_n是一维锯齿状配位聚合物；(HgI_2L2)_2·3H_2O是双核金属大环化合物；[Co_2(L2)_2·2CH_3OH]_n是具有一维双螺旋结构的配位聚合物；[Co_2(L3)_2·CH_3OH·CH_3CN]_n为一维双链结构的配位聚合物；以及由非直线形配体L3在金属离子Cu和Cd的诱导作用下发生水解，并且金属离子与水解产物——异烟酸根离子自组装，形成了三维氢键超分子化合物[Cu(C_5H_4NCOO)_2(H_2O)_2]·H_2O和三维配位聚合物{[Cd(C_5H_6NCOO)_2H_2O]·DMF}_n。

The crystal structure of pure Pd is of face centered cubic and it is a hydrogen absorbing metal.

钯是一种面心立方结构的吸氢金属，氢原子溶解在晶格中，占据八面体间隙位，形成fcc的子晶格，吸氢时晶格发生等方性膨胀；氢在钯中的扩散路径为O T O跃迁，存在反同位素效应；钯氢化物的氢同位素分离因子较大，并受到温度、氢浓度等因数的影响；钯氢体系的p c等温线表现出良好的坪台性，Pd H和Pd D均存在临界点，尚未确定Pd T有无临界点；单晶钯氢反应动力学与不同的晶面有关；钯氚体系存在氚老化效应

By researching the catalysis action of metals in hydrogen storage materials, it is found that metal activators accelerate hydriding-dehydrding velocity of hydrogen storage materials in the process of grinding, and they also reduce the dehydriding temperature, enhance the hydrogen storage capacity of materials, and hasten the formation of similar-graphite microcrystal in the process of pretreatment.

通过对储氢材料中金属催化作用的研究发现，金属催化剂促进材料球磨过程中的快速吸氢，加快材料的放氢速度，降低材料的放氢温度，提高材料的储氢密度，促进无烟煤在预处理过程中类石墨微晶结构的形成。

The effect of zeolites ion-exchanged by transition metals on thermal catalytic cracking reaction is studied. The product distributions of the cracking reactions catalyzed by theβor ZSM-5 zeolites exchanged with transition metals are different from that catalyzed by corresponding Hzeolites, which means the mechanism of cracking reactions has varied. Group Ⅷ metals Fe, Co, Ni and Cu, Zn are shown to be of strong catalytic activity of oxidative dehydrogenation, while Ti and Cr are not of oxidative activity. Catalyzed by zeolites or catalyst containing Ag, conversion of thermal catalytic cracking reactions and the yield of ethylene increase while the yield of propylene does not decrease. Silver can not only promote the formation of carbonium ion, but also convert carbonium ion into free-radical via redox reaction. The weak adsorption of olefins on silver reduces the occurrence of hydrogen transfer and dehydrogenation. As a result, the yield of light olefins is favored by silver in the catalyst.

采用过渡金属交换的分子筛作为催化剂，进行催化热裂解制取乙烯的反应，研究发现，在β沸石分子筛和ZSM-5分子筛中引入过渡金属后，催化热裂解反应的产物分布与相应的氢型分子筛相比有了较大的变化，说明过渡金属的加入对于催化热裂解反应的机理具有影响，Ⅷ族金属如Fe、Co、Ni和第Ⅰ、Ⅱ副族Cu、Zn表现出较强的氧化脱氢活性，产物中氢气、焦炭的产率很高，Ti、Cr则未表现出氧化作用：分子筛及催化剂中引入银后，催化热裂解反应的转化率和乙烯的产率有了提高，丙烯产率没有很大的变化，说明银在催化热裂解反应中能够促进正碳离子的生成，又有可能通过氧化-还原作用部分改变反应机理，促进了自由基的生成，并且由于银对烯烃的吸附很弱，其氢转移反应和脱氢、加氢活性比较低，有利于烯烃产率的提高。

The reaction performance of Pt-Sn-Li/Al_2O3/FeCrAl catalyst was measured,and the properties of the catalyst were characterized.It was found that reaction temperature,LHSV and the molar ratio of hydrogen to alkane have greatly affected on the catalytic performance of the Pt-Sn-Li/Al_2O_3/FeCrAl catalyst.Under a set of optimal reaction conditions,at 0.1 MPa,470℃,the molar ratio of hydrogen to alkane of 4 and LHSV of 0.14 mL·m~(-2)·h~(-1),the dodecane conversion is 6%,and the dodecene selectivity is about 72%.

结果表明：工业催化剂的催化性能比至今实验室制备的γ-Al_2O_3和SBA-15颗粒负载型颗粒状催化剂的性能好；反应温度、液时空速和氢烃摩尔比对Pt-Sn-Li/Al_2O_3/FeCrAl金属基整体式催化剂脱氢性能都有重要影响，最适宜的反应条件是压力为0.1 MPa，反应温度为470℃，进料氢烃摩尔比为4和LHSV为0.14 mL·m~(-2)·h~(-1)，此时十二烷的转化率约为6%，十二烯的选择性约为72%；活性组分涂层与金属基体结合良好。

Outside the rock core surrounded by 5,000 km thick ice shell to the outside is 8000 km thick metallic hydrogen, the most outside the atmosphere.

在岩石核心外面包围着5000千米厚的冰壳，再外面是8000千米厚的金属氢，最外面是大气。

By transmission electron microscope, selected area electron diffraction, powder X-ray diffraction, differential scanning calorimeter as well as self-devised drainage, the effects of metals on grindability, material size, hydrogen storage capacity and hydriding-dehydriding properties are emphatically researched. Fe、Co、Ni were added in pretreatment process of anthracite and the effects of the added metals are researched, also, the action mechanism of metals is discussed on the basis of experimental results.

通过透射电镜、选区电子衍射，X射线衍射、差式扫描量热分析以及自行设计的排水装置等分析测试手段，着重研究了储氢材料中金属对其可磨性、粒度大小、储氢密度、吸放氢性能等的影响，在无烟煤的预处理过程中添加了Fe、Co、Ni三种金属，研究了所添加金属对材料储氢的影响，并在实验结果的基础上探讨了储氢材料中金属的作用机理。

The self - discharge of nickel - metal hydride battery was related to various factors.

金属氢化物镍电池的自放电与多种因素有关。

Long lasting, it won't lose effectiveness like microwaveable or reactive chemical heating elements, ideal for diabetics and other persons suffering from poor circulation thus cold extremitiesWith the development of new nickel-metal hydride battery options, improvements in electronics have now been matched by significant improvements in the batteries that power them.

持久的，它不会失去了效力一样microwaveable或化学反应加热元件，适合糖尿病患者和其它患有不畅从而肢冷优势的镍氢电池的发展新的金属氢化物-镍电池选项，改善电子已配对显着改善的电池电力。

The internal resistances of Ni-MH and Ni-Cd battery in different conditions were tested and analyzed.

对金属氢化物镍电池和镉镍电池在不同条件下的内阻进行了测试分析。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。