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1)  deposition-precipitation
沉积-沉淀
1.
It had been found that gold that highly dispersed over a series of Ti-containing supports by the deposition-precipitation method could catalyze vapor phase propylene epoxidation in H_2-O_2 mixture.
近来发现采用沉积-沉淀法将金高度分散在一些含钛物质表面上时,能够催化 H_2-O_2-丙烯气相体系直接合成 PO。
2.
The pure mesoporous TiO_2 and doped mesoporous TiO_2 by La~(3+) or Ce~(3+) were synthesized by using poly(alkylene oxide)triblock copolymer (designated EO20PO70EO20; P123) as the organic template, which were used as supports to prepare the corresponding supported catalysts by the deposition-precipitation method.
采用三嵌段共聚物聚乙醚-聚丙醚-聚乙醚(EO20PO70EO20,P123)为有机模板剂合成了介孔TiO_2及原位掺杂La~(3+)和Ce~(3+)的介孔TiO_2载体,用沉积-沉淀法制备出一系列负载型Au/TiO_2及掺杂La~(3+)和Ce~(3+)的Au/TiO_2催化剂。
3.
1、The support TiO_2 was synthesized by sol-gel method, and a series of Au/TiO_2 catalysts were prepared by the deposition-precipitation method.
1、以溶胶-凝胶法制备的TiO_2为载体,用沉积-沉淀法制备出一系列Au/TiO_2,考察了焙烧温度、金的负载量、反应液pH值及沉淀剂等制备因素对催化剂活性的影响。
2)  deposition-precipitation
沉积-沉淀法
1.
5% Au/Fe2O3 was prepared by co-precipitation,deposition-precipitation and impregnation separately.
采用共沉淀法、沉积-沉淀法和浸渍法制备了1。
2.
ZrO2 support and Au/ZrO2 catalyst were prepared by aqueous solution precipitation and deposition-precipitation method, respectively.
采用水溶液沉淀和沉积-沉淀法分别制备了ZrO2载体及相应的Au/ZrO2催化剂,通过CO氧化反应考察了载体的制备条件、催化剂的焙烧温度和预处理温度对催化剂活性的影响;通过X射线衍射、氢程序升温还原(H2-TPR)、X射线光电子能谱(XPS)表征,分析了影响催化剂活性的原因。
3.
Some oxides(Al2O3,SiO2,TiO2,MgO)and H-ZSM-5 zeolite were used as supports to prepare Au catalysts by deposition-precipitation(DP)with urea as a precipitator.
选择不同氧化物(Al2O3,SiO2,TiO2,MgO)和H-ZSM-5分子筛作为载体,以尿素为沉淀剂,采用沉积-沉淀法制备了一系列负载型金催化剂。
3)  deposition-precipitation
沉积沉淀法
1.
Pd catalysts derived from MgAl hydrotalcite precursors were prepared by three different methods: deposition-precipitation(DP),impregnation(IM),and co-precipitation(CP),which were characterized by ICP,XRD,SEM,TEM,EDS,TPR and surface area measurement.
以沉积沉淀法(DP)、浸渍法(IM)和共沉淀法(CP)制备MgAl水滑石衍生氧化物负载钯催化剂,用ICP、XRD、SEM、TEM、EDS、TPR以及比表面测定等手段对催化剂进行了表征。
2.
5O 2 (CZ) catalysts were prepared by deposition-precipitation (DP), mixing (MIX) and conventional impregnation (IMP) methods, and the effects of the preparation methods on the three-way catalytic behaviors were investigated.
结果表明沉积沉淀法制备的Pd/Ce0 5Zr0 5O2 催化剂 (Pd DP)表现出最强的Pd 载体作用及最优活性 ,原位红外实验发现Pd DP上存在与传统的浸渍法制备的Pd IMP催化剂不同的NO催化还原途径 ,推测Pd 载体间相互作用引起NO还原机理差异 ,进而导致活性差
4)  deposition-precipitation method
沉积沉淀法
1.
The Au/TiO_2 photocatalyst was prepared by the deposition-precipitation method and characterized by transmission electron microscopy, diffuse reflectance spectroscopy, and X-ray photoelectron spectroscopy.
采用沉积沉淀法制备了Au/TiO2催化剂,用透射电子显微镜、紫外可见漫反射光谱和X射线光电子能谱进行了表征,结果表明,样品在空气中于200℃处理后,金以金属态Au0的形式沉积在TiO2表面。
2.
Using ZnCl2,Al2O3 and Na2CO3 as raw materials,ZnO/Al2O3 composite oxide was prepared by deposition-precipitation method.
以ZnCl2、Al2O3和Na2CO3为主要原料,采用沉积沉淀法制得纳米ZnO/Al2O3光催化剂。
3.
CuO/ZnO catalysts with different CuO content were prepared by deposition-precipitation method for water-gas shift reaction,using Cu(OH)2 as the precursor of CuO.
首次采用沉积沉淀法,以Cu(OH)2为前驱体制备不同CuO负载质量分数的CuO/ZnO水煤气变换(WGS)催化剂,并运用XRD、N2物理吸附和TPR等方法对催化剂进行结构表征。
5)  sediment [英]['sedɪmənt]  [美]['sɛdəmənt]
沉淀,沉积物
6)  settlement , settling deposition , subsidence,depositing,sedimentation,subsidency,subside,depression,sagging,(of pollutant)fall-out,downwash;,
沉降,沉积,沉淀
补充资料:半深海沉积
      水深大致在 200~2000米范围的沉积物。主要分布在大陆坡,又称陆坡沉积。大陆坡是一个分开大陆和大洋的全球性巨大斜坡,是大陆和洋盆之间的过渡地带。陆坡沉积物也具有明显的过渡性质,它既不同于浅海沉积,又有别于深海沉积。滑坡所造成的影响是它的显著特点。其物质来源以陆源碎屑为主,生物与化学作用形成的沉积多于浅海区,少于深海区。在有些地区,碳酸盐沉积的比重明显增加。
  
  陆坡沉积物的粒度小于浅海沉积,沉积物中约60%是泥,25%是砂,10%是岩块和砾石,其余的5%是贝壳和生物沉积。越过陆架坡折线后,沉积物往往从砂变成泥。粗粒沉积只呈斑块状分布,有些海区基岩裸露,它们常与崎岖的海底形态有关。
  
  滑坡沉积物在陆坡沉积中占有突出地位。其形成与陆坡的不稳定性有关,坡度过陡或沉积速率过大常导致滑坡。滑坡沉积体后缘遭受拉张,导致断裂;前端遭受挤压,形成冲断层、褶皱和拱起的小丘。在地形和地震剖面上显示为岗丘状、杂乱的坡面,不连续的反射层。在沉积岩心中可见到扭曲层理。
  
  大陆坡上广泛发育海底峡谷。它虽为侵蚀地形,但有的谷底堆积有大量沉积物,其主要特征是:沉积物主要为泥质,夹有少量粗碎屑物质;峡谷出口处往往是浊流沉积分布区;沉积物中普遍含有浅水有孔虫及海绿石;峡谷中常有更新世末期和冰后期的沉积物。
  
  第四纪冰期低海位时,河流穿过当时的滨海平原(现在的大陆架),将大量物质直接搬运到陆坡上堆积。沉积速率增大,沉积粒度变粗,滑坡沉积物尤其常见,在陆坡,特别是它的下部形成了巨厚的沉积。
  
  濒临中国的南海和东海的陆坡上,沉积物虽以陆源为主,但生物和自生成因的沉积也占显著地位,如南海北部陆坡上形成了自生海绿石砂;东海陆坡出现有孔虫等生源沉积物,并有浊流沉积分布。
  

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