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CO_2加氢制低碳烯烃Fe/Silicalite-2催化剂研究 Ⅱ.催化剂制备研究
引用本文:徐龙伢,王清遐,林励吾,梁东白,杨力,崔巍,徐奕德.CO_2加氢制低碳烯烃Fe/Silicalite-2催化剂研究 Ⅱ.催化剂制备研究[J].天然气化工,1997(4).
作者姓名:徐龙伢  王清遐  林励吾  梁东白  杨力  崔巍  徐奕德
作者单位:中国科学院大连化学物理研究所,中国科学院大连化学物理研究所催化基础国家重点实验室
摘    要:铁是CO2加氢制低碳烯烃的催化活性组分,其含量的增加将明显提高CO2转化率和反应产物中烃类摩分率;MnO是Fe/Si-2催化剂CO2加氢制低碳烯烃的有效助剂,提高MnO含量,有利于提高CO2加氢制低碳烯烃的选择性,尤其可明显提高烃类产物中的烯、烷比值。结果还表明,MnO助剂对甲烷生成量的影响不明显;而K2O助剂则可抑制甲烷生成,从而进一步提高低碳烯烃选择性,表明MnO和K2O是Fe/Si-2催化剂CO2加氢制低碳烯烃的重要助剂。

关 键 词:CO2  加氢  低碳烯烃  Fe/Silicalite-2催化剂

Study of Fe/Silicalite 2 catalyst for CO 2 hydrogenation to light olefins Ⅱ.Research on the preparation of the catalyst
Xu Longya,Wang Qingxia,Lin Liwu,Liang Dongbai,YangLi.Study of Fe/Silicalite 2 catalyst for CO 2 hydrogenation to light olefins Ⅱ.Research on the preparation of the catalyst[J].Natural Gas Chemical Industry,1997(4).
Authors:Xu Longya  Wang Qingxia  Lin Liwu  Liang Dongbai  YangLi
Abstract:Fe is an active component of the catalyst for CO 2 hydrogenation to hydrocarbons.An increment of its loading content can enhance CO 2 conversion and hydrocarbon formation.However,an ambiguous effect on the selectivity to light olefins in hydrocarbon products is observed.Adding MnO as a promoter to the Fe/Si 2 catalyst for CO 2 hydrogenation obviously increases the selectivity to light olefins, especially olefin/paraffin ratio,but CH 4 yield and CO formation are insensitive to MnO as well as CO 2 conversion.K 2O is another vital promoter of the Fe/Si 2, with which added to the catalyst,the selectivity to light olefins increases greatly, while CH 4 formation is inhibted evidently. Meanwhile, a considerable increment of CO 2 conversion is observed with the addition of K 2O. Thus, it has been manifested that both MnO and K 2O are important promoters of the Fe/Si 2 catalyst for CO 2 hydrogenation to produce light olefins.
Keywords:CO  2  hydrogenation  light  olefin  Fe/Silicalite  2  catalyst
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