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预处理Fe基催化剂CO加氢合成低碳烯烃选择性影响研究

张建利,  马利海,  范素兵,  赵天生,  张侃

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文章导航 > 燃料化学学报（中英文）  > 2012 >  40(09): 1110-1114
张建利, 马利海, 范素兵, 赵天生, 张侃. 预处理Fe基催化剂CO加氢合成低碳烯烃选择性影响研究[J]. 燃料化学学报（中英文）, 2012, 40(09): 1110-1114.
引用本文: 张建利, 马利海, 范素兵, 赵天生, 张侃. 预处理Fe基催化剂CO加氢合成低碳烯烃选择性影响研究[J]. 燃料化学学报（中英文）, 2012, 40(09): 1110-1114.
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ZHANG Jian-li, MA Li-hai, FAN Su-bing, ZHAO Tian-sheng, ZHANG Kan. Effect of pretreatment of iron catalyst on light olefin selectivity in CO hydrogenation[J]. Journal of Fuel Chemistry and Technology, 2012, 40(09): 1110-1114.
Citation: ZHANG Jian-li, MA Li-hai, FAN Su-bing, ZHAO Tian-sheng, ZHANG Kan. Effect of pretreatment of iron catalyst on light olefin selectivity in CO hydrogenation[J]. Journal of Fuel Chemistry and Technology, 2012, 40(09): 1110-1114.
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预处理Fe基催化剂CO加氢合成低碳烯烃选择性影响研究

  • 1.

    宁夏大学 天然气转化省部共建国家重点实验室培育基地, 宁夏 银川 750021;

  • 2.

    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

基金项目: 宁夏自然科学基金(NZ1010); 新世纪优秀人才支持计划(NCET-08-0872); 科技部"973"计划前期研究专项(2012CB723106)。
详细信息
    通讯作者:

    张建利(1980-),男,讲师,博士,主要从事C1化学与多相催化应用基础研究,Tel:0951-2062393,Fax:0951-2062323,E-mail:zhangjl@nxu.edu.cn。

  • 中图分类号: O643

Effect of pretreatment of iron catalyst on light olefin selectivity in CO hydrogenation

  • 1.

    State Key Laboratory Cultivation Base of Natural Gas Conversion, Ningxia University, Yinchuan 750021, China;

  • 2.

    State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

    摘要
  • 摘要: 研究了Fe2O3在CO和H2气氛下预处理对催化剂物相、表面组成和性质的影响及CO加氢合成低碳烯烃反应行为。结果表明,300℃ H2预处理后催化剂主要物相结构为Fe3O4和α-Fe,250℃ CO预处理后主要物相为Fe3O4,随着CO预处理温度的升高,有碳化铁生成。表面碳化物含量随着CO预处理温度的升高而增加。CO较H2预处理表面碱性增强,CO2和CO吸附显著增加,随着预处理时间的延长,表面积炭降低了CO2和CO吸附。经CO预处理的催化剂具有较高的烯烃选择性,H2预处理的催化剂烯烃选择性相对较低。
    Abstract: Effects of CO and H2 pretreatment on the Fe2O3 catalyst and its catalytic performance on the light olefin production through CO hydrogenation were investigated. It was indicated that the catalyst sample pretreated with H2 at 300℃ favored the formation of Fe3O4 and α-Fe phases. Fe3O4 was formed with CO pretreatment at 250℃. And, with the increase of pretreatment temperature, iron carbides were formed. The TPD experiment showed that the surface basicity of the catalyst pretreated with CO was stronger than that with H2. Surface carbonaceous deposition caused decrease of CO2 and CO adsorption. Comparing to H2 pretreated catalyst, CO pretreated catalyst has higher selectivity to light olefins.
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    • 参考文献(21)
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出版历程
  • 收稿日期:  2011-12-31
  • 修回日期:  2012-03-29
  • 刊出日期:  2012-09-29

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