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10金币准确翻译一段话
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Ni-supported catalysts on perovskite-type oxides have been prepared by ‘‘solid phase crystallization’’ (spc) method and tested for CO2 reforming of CH4 into synthesis gas at 850C. The Ni catalysts were obtained in situ during the reaction from the oxides as the precursors in which nickel species were homogeneously incorporated in the perovskite structure. Ni/Ca0.8Sr0.2TiO3 and Ni/BaTiO3 catalysts showed high activity as well as high sustainability among the catalysts tested. The high activity may be due to highly dispersed and stable Ni metal particles (diameter<1 nm) on the perovskite, where the nickel species thermally evolve from the cations homogeneously distributed in an inert perovskite matrix as the precursors during the reaction. Nickel species was partly incorporated in the perovskite structure by replacing the Ti site and partly separated as NiO from the structure after the calcination of the precursors, and the former species likely affords the highly dispersed Ni metal under the reducing atmosphere. The amount of NiO detected by XRD analyses was smaller on BaTiO3 than on Ca0.8Sr0.2TiO3, while that of surface Ni obtained by TGA was larger on Ca0.8Sr0.2TiO3 than on BaTiO3. It is thus likely that an incorporation of Ni was enhanced in BaTiO3 compared to Ca0.8Sr0.2TiO3, resulting in the higher dispersion of Ni metal particles on the former support. This well coincided with the activity of Ni/BaTiO3 being higher than that of Ni/Ca0.8Sr0.2TiO3 at high space velocity. The high sustainability against coke formation may be partly due to the mobile oxygen as well as due to the presence of alkaline earth metals in the perovskite supports. Oxygen mobility in the perovskite was further tested by CO2 pulse reactions, suggesting an easy migration of oxygen over the perovskite structure. It is most likely that the oxygen easily migrates from the supports to the surface of fine Ni particles, where the coke material can be oxidized into carbon oxides. |
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2楼2009-07-12 20:48:06
monitor2885
至尊木虫 (职业作家)
队长
- 翻译EPI: 15
- 应助: 6 (幼儿园)
- 贵宾: 0.339
- 金币: 38700.5
- 散金: 147
- 红花: 22
- 帖子: 4943
- 在线: 2166.8小时
- 虫号: 701577
- 注册: 2009-02-15
- 性别: GG
- 专业: 生态系统生态学
3楼2009-07-12 21:13:56
★ ★ ★ ★ ★ ★ ★ ★ ★ ★
小童2921(金币+2,VIP+0): 7-18 16:51
qingfeng877680(金币+3,VIP+0):MM翻译辛苦了。 7-26 11:13
zap65535(金币+2,VIP+0):专门保护美女的我特地给你补发金币 12-23 13:45
zap65535(金币+3,VIP+0):苦劳奖 12-23 13:45
小童2921(金币+2,VIP+0): 7-18 16:51
qingfeng877680(金币+3,VIP+0):MM翻译辛苦了。 7-26 11:13
zap65535(金币+2,VIP+0):专门保护美女的我特地给你补发金币 12-23 13:45
zap65535(金币+3,VIP+0):苦劳奖 12-23 13:45
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Ni-supported catalysts on perovskite-type oxides have been prepared by ‘‘solid phase crystallization’’ (spc) method and tested for CO2 reforming of CH4 into synthesis gas at 850C. 众所周知，钙钛矿型复合氧化物催化剂中的供镍催化剂是用固相结晶法合成，并通过c850 合成气系统中二氧化碳制备甲烷进行测试。 The Ni catalysts were obtained in situ during the reaction from the oxides as the precursors in which nickel species were homogeneously incorporated in the perovskite structure. 镍催化剂从潜体氧化物反应中得到的。在这种氧化物中镍均匀的混合在钙钛矿结构中。 Ni/Ca0.8Sr0.2TiO3 and Ni/BaTiO3 catalysts showed high activity as well as high sustainability among the catalysts tested. 在催化剂测试中 Ni/Ca0.8Sr0.2TiO3 和 Ni/BaTiO3 催化剂显示出高活性和高稳定性。 The high activity may be due to highly dispersed and stable Ni metal particles (diameter<1 nm) on the perovskite, where the nickel species thermally evolve from the cations homogeneously distributed in an inert perovskite matrix as the precursors during the reaction. 由于镍的高扩散性和小于1纳米的金属粒径在钙钛矿结构中该催化剂显示出高活性。在钙钛矿结构中镍热解时其阳离子均匀扩散在钙钛矿惰性母体中从而成为反应中的潜体。 不管怎么说，楼主的10个金币买四句话是可以的。所以只翻译四句。如果觉得好就加价吧！  都不容易！！ |
4楼2009-07-14 15:38:10
5楼2009-07-14 16:00:06
monitor2885
至尊木虫 (职业作家)
队长
- 翻译EPI: 15
- 应助: 6 (幼儿园)
- 贵宾: 0.339
- 金币: 38700.5
- 散金: 147
- 红花: 22
- 帖子: 4943
- 在线: 2166.8小时
- 虫号: 701577
- 注册: 2009-02-15
- 性别: GG
- 专业: 生态系统生态学
6楼2009-07-14 18:57:51
7楼2009-07-15 17:12:04
8楼2009-07-16 14:01:47
★ ★ ★ ★ ★
小童2921(金币+5,VIP+0): 7-18 16:53
小童2921(金币+5,VIP+0): 7-18 16:53
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镍负载型催化剂的钙钛矿型氧化物编写了固相结晶'' '' （ SPC ）的方法和测试的CO2重整成合成气在850C 。镍催化剂，在现场得到的反应氧化物作为前体，其中镍种均匀纳入了钙钛矿结构。 Ni/Ca0.8Sr0.2TiO3和Ni/BaTiO3催化剂表现出较高的活性，以及高的可持续性之间的催化剂测试。高活性可能是由于高度分散，稳定的镍金属微粒（直径“ 1毫微米）的钙钛矿，那里的镍物种进化的热离子均匀分布在惰性钙基质中的前体的反应。镍物种部分纳入取代钙钛矿结构的钛网站和部分失散的氧化镍的结构焙烧后的前体，以及前物种可能提供了高度分散镍金属的还原性气氛。数额NiO的XRD分析检测较小的钛酸钡比Ca0.8Sr0.2TiO3 ， 软件翻译，自己组织一下 而获得的表面镍热较大的Ca0.8Sr0.2TiO3比钛酸钡。因此，可能是一个纳入镍增强钛酸钡相比Ca0.8Sr0.2TiO3 ，从而在更高的分散镍金属微粒对前支持。这也正好与活动Ni/BaTiO3正在高于Ni/Ca0.8Sr0.2TiO3在高空速。高可持续性对焦炭的形成可能是部分原因是移动氧以及因碱土金属中的钙钛矿支持。氧流动钙钛矿进一步测试脉冲二氧化碳反应，表明了一个轻松升级的氧气的钙钛矿结构。这是最有可能的氧气容易迁移的支持，以优良的表面镍颗粒，其中焦炭物质可以氧化成碳氧化物。 |
9楼2009-07-17 09:59:03