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Ru助剂对Co/SiO2催化剂费托合成反应性能的影响
  • ISSN号：0253-9837
  • 期刊名称：《催化学报》
  • 时间：0
  • 分类：TQ139.2[化学工程—无机化工]
  • 作者机构：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001, [2]江南大学化学与材料工程学院,江苏无锡214122
  • 相关基金：国家自然科学基金重大项目（20590361）.
作者： 高海燕[1,2], 相宏伟[1], 李永旺[1]
关键词： 钴催化剂, 二氧化硅, 钌助剂, 费托合成, cobalt catalyst, silica, ruthenium promoter, Fischer-Tropsch synthesis
中文摘要：

考察了Ru助剂（0.17%～9.96%）对Co/SiO2催化剂结构及其费托合成反应性能的影响.结果表明,Ru助剂可降低Co/SiO2催化剂的还原温度,从而提高其还原度.光电子能谱和扩展X吸收射线精细结构研究表明,即使Ru含量高达9.96%,在Co/SiO2催化剂焙烧过程中也未观察到Ru物种与Co物种作用形成的化合物.还原后催化剂中Ru趋向于与Co物种紧密接触且分散在催化剂表面.H2程序升温脱附结果表明,随着Ru含量的增加,位于反应温度附近的H2脱附峰面积增加,即此时催化剂吸附H2能力提高,因此反应活性单调增加,但存在最佳Ru含量,此时C5＋选择性最高.

英文摘要：

The effects of Ru content （0.17%–9.96%） on Co/SiO2 catalyst structure and Fischer-Tropsch synthesis were studied. It was found that Ru could decrease the reduction temperature of the Co/SiO2 catalyst and increase its reduction degree. X-ray photoelectron spectroscopy and extended X-ray absorption fine structure investigations showed that, even if the Ru content was as high as 9.96%, no obvious compound was formed between the Ru and Co species during the calcination of the Co/SiO2 catalyst. For the reduced catalyst, the metallic Ru was contacted closely with Co species and tended to disperse on the surface of the catalyst. With the increase in Ru content, H2 desorption corresponding to Fischer-Tropsch synthesis reaction temperature showed a monotonous increase in intensity, and the reactivity increased. When a suitable ruthenium content was introduced, the selectivity for C5＋ hydrocarbons was improved.

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期刊信息
  • 《催化学报》
  • 北大核心期刊（2011版）
  • 主管单位:中国科学院
  • 主办单位:中国化学会 中国科学院大连化学物理研究所
  • 主编：李灿 张涛
  • 地址：大连市沙河口区中山路457号
  • 邮编：116023
  • 邮箱：chxb@dicp.ac.cn
  • 电话：0411-84379240
  • 国际标准刊号：ISSN：0253-9837
  • 国内统一刊号：ISSN：21-1195/O6
  • 邮发代号:8-93
  • 获奖情况:
  • 第三届国家期刊奖提名奖,中国科协精品科技期刊示范项目
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  • 被引量:19199