Cu/SiO 2 、Fe/SiO 2 和Cu-Fe/SiO 2 催化乙酸气相加氢反应的研究
发布时间:2021-03-22 01:18
以硝酸铜和硝酸铁为金属前驱体采用等体积浸渍法制备了Cu/Si O2、Fe/Si O2和Cu-Fe/Si O2催化剂,用于催化乙酸气相加氢生成乙醇和乙酸乙酯。在320℃、2.0 MPa、乙酸液时空速0.6 h-1、氢酸摩尔比为5的条件下,Cu-Fe/Si O2双金属催化剂对乙醇和乙酸乙酯的总选择性达到了93.5%,明显高于Cu/Si O2和Fe/Si O2单金属催化剂。同时,C3产物(丙烷、丙烯、丙酮和异丙醇)、CO2以及CH4、CO、C2H6和C2H4等不凝性气体在双金属催化剂上得到了显著的抑制。对催化剂进行了透射电镜(TEM)、X射线衍射(XRD)、氢气-程序升温还原(H2-TPR)和X射线光电能谱(XPS)表征分析,结果表明双金属催化剂上的Cu0<...
【文章来源】:高校化学工程学报. 2016,30(01)北大核心EICSCD
【文章页数】:7 页
【部分图文】:
催化剂TEM和HR-TEM图
lline(JCPDScard)Size/nmObservedcrystalline(JCPDScard)Size/nmObservedcrystalline(JCPDScard)Size/nm15%Fe/SiO2Fe2O3(89-0597)15.1FeO(06-0615)8.8FeO(06-0615)13.0FeO(OH)(74-3080)14.5Fe2(SiO4)2(80-0947)24.515%Cu/SiO2CuO(41-0254)25.2Cu0(71-4609)29.7Cu0(71-4609)32.615%Cu-15%Fe/SiO2CuO(41-0254)25.9Cu0(71-4609)33.1Cu0(71-4609)31.6Fe2O3(89-0597)13.6Fe0(87-0721)19.4Fe0(87-0721)5.5Fe3O4(74-1909)12.0图3催化剂TEM和HR-TEM图Fig.3TEMandHR-TEMimagesofthecatalysts(a)TEMimageofCu/SiO2afterreaction;(b)TEMimageofFe/SiO2afterreaction;(c)TEMimageofCu-Fe/SiO2beforereaction;(d)TEMimageofCu-Fe/SiO2afterreaction;(e)HR-TEMimageofCu-Fe/SiO2afterreactione20nma20nmb20nmc20nmd20nm1020304050607080###########CuOFe2O3FeCuFe3O4(A)(B)Fe2O3FeOFeO(OH)Fe2(SiO4)CuOCu(C)2312313212theta/degree图2催化剂XRD谱图Fig.2XRDpatternsofthecatalysts(A)Fe/SiO2(A1:calcinedcatalyst;A2:reducedcatalyst;A3:catalystafterreaction);(B)Cu/SiO2(B1:calcinedcatalyst;B2:reducedcatalyst;B3:catalystafterreaction);(C)Cu-Fe/SiO2(C1:calcinedcatalyst;C2:reducedcatalyst;C3:catalystafterreaction)
【参考文献】:
期刊论文
[1]载体对Pt-Sn催化乙酸加氢制乙醇性能的影响[J]. 胡英韬,窦梅,南碎飞. 高校化学工程学报. 2014(06)
本文编号:3093751
【文章来源】:高校化学工程学报. 2016,30(01)北大核心EICSCD
【文章页数】:7 页
【部分图文】:
催化剂TEM和HR-TEM图
lline(JCPDScard)Size/nmObservedcrystalline(JCPDScard)Size/nmObservedcrystalline(JCPDScard)Size/nm15%Fe/SiO2Fe2O3(89-0597)15.1FeO(06-0615)8.8FeO(06-0615)13.0FeO(OH)(74-3080)14.5Fe2(SiO4)2(80-0947)24.515%Cu/SiO2CuO(41-0254)25.2Cu0(71-4609)29.7Cu0(71-4609)32.615%Cu-15%Fe/SiO2CuO(41-0254)25.9Cu0(71-4609)33.1Cu0(71-4609)31.6Fe2O3(89-0597)13.6Fe0(87-0721)19.4Fe0(87-0721)5.5Fe3O4(74-1909)12.0图3催化剂TEM和HR-TEM图Fig.3TEMandHR-TEMimagesofthecatalysts(a)TEMimageofCu/SiO2afterreaction;(b)TEMimageofFe/SiO2afterreaction;(c)TEMimageofCu-Fe/SiO2beforereaction;(d)TEMimageofCu-Fe/SiO2afterreaction;(e)HR-TEMimageofCu-Fe/SiO2afterreactione20nma20nmb20nmc20nmd20nm1020304050607080###########CuOFe2O3FeCuFe3O4(A)(B)Fe2O3FeOFeO(OH)Fe2(SiO4)CuOCu(C)2312313212theta/degree图2催化剂XRD谱图Fig.2XRDpatternsofthecatalysts(A)Fe/SiO2(A1:calcinedcatalyst;A2:reducedcatalyst;A3:catalystafterreaction);(B)Cu/SiO2(B1:calcinedcatalyst;B2:reducedcatalyst;B3:catalystafterreaction);(C)Cu-Fe/SiO2(C1:calcinedcatalyst;C2:reducedcatalyst;C3:catalystafterreaction)
【参考文献】:
期刊论文
[1]载体对Pt-Sn催化乙酸加氢制乙醇性能的影响[J]. 胡英韬,窦梅,南碎飞. 高校化学工程学报. 2014(06)
本文编号:3093751
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