Effect of cobalt promoter on Co—Mo—K/C catalysts used for mixed alcohol synthesis |
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引用本文: | JunBao MingJiang TianduoHu TaoLiu Yan-ningXie ZhongruiLi YiluF.Effect of cobalt promoter on Co—Mo—K/C catalysts used for mixed alcohol synthesis[J].北京同步辐射装置,2001(1):92-101. |
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作者姓名: | JunBao MingJiang TianduoHu TaoLiu Yan-ningXie ZhongruiLi YiluF |
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作者单位: | [1]DepartmentofChemicalPhysics,UnversityofScienceandTechnologyofChina,Hefei230026,PRChina [2]InstituteofHighEnergyPhysics,ChineseAcademyofScience,Beijing100039,PRChina [3]NationalSynchrotronRadiationLaboratory,ChineseAcademyofScience,Beijing100039,PRChina |
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摘 要: | The structures of sulfided Co-Mo-K/C catalysts were studied by menas of X-ray diffraction (XRD),laser Raman spectra(LRS),and X-ray absorption fine structure(XAFS).Activities for alcohol synthesis via CO hydrogenation were used to characterize the catalytic performance of these catalysts.On the activeated carbon support,molybdenum is mainly resent as MoS2 species which shrinks with the cobalt loading,While cobalt is mainly present in the form of “Co-Mo-S”phase at the low Co loading and partly in a Co9S8--like structure at higher Co loading.The catalysts exhibit outstanding performance for higher alcohol synthesis due to addition of the promotion of cobalt.The catalysts exhibit outstanding performance for higher alcohol synthesis due to the addition of the promotion of cobalt.The activity for alcohol formation is optimized at a Co/Mo atomic ratio of 0.5.Co species operate as s synergistic system,rather than independently from the MoS2 phase.2001 Elsevier Science B.V.All rights reserved.
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关 键 词: | 钴助剂 Co-Mo-K/C催化剂 钴钼钾催化剂 醇 合成 活性 |
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