| Effect of Manganese Incorporation Manner on an Iron-Based Catalyst for Fischer-Tropsch Synthesis |
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| 作者姓名： | Tingzhen Li Yong Yang Chenghua Zhang Zhichao Tao Haijun Wan Xia An Hongwei Xiang Yongwang Li |
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| 作者单位： | Tingzhen Li~(1，2) Yong Yang~1 Chenghua Zhang~1 Zhichao Tao~(1，2) Haijun Wan~(1，2) Xia An~(1，2) Hongwei Xiang~(1*) Yongwang Li~1 1.State Key Laboratory of Coal Conversion，Institute of Coal Chemistry，Chinese Academy of Sciences，Taiyuan 030001，Shanxi，China 2.Graduate University of the Chinese Academy of Sciences，Beijing 100029，China |
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| 基金项目： | Foundation item:the National Natural Science Foundation of China(20590360)，the Natural Science Foundation of Shanxi Province(2006021014)，the National Outstanding Young Scientists Foundation of China(20625620)，National Key Basic Research Program of China(973 Program)(2007CB216401). |
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| 摘 要： | A systematic study was undertaken to investigate the effects of the manganese incorpo- ration manner on the textural properties,bulk and surface phase compositions,reduction/carburization behaviors,and surface basicity of an iron-based Fischer-Tropsch synthesis(FTS)catalyst.The cata- lyst samples were characterized by N_2 physisorption,X-ray photoelectron spectroscopy(XPS),H_2(or CO)temperature-programmed reduction(TPR),CO_2 temperature-programmed desorption(TPD),and M(?)ssbauer spectroscopy.The FTS performance of the catalysts was studied in a slurry-phase continuously stirred tank reactor(CSTR).The characterization results indicated that the manganese promoter incor- porated by using the coprecipitation method could improve the dispersion of iron oxide,and decrease the size of the iron oxide crystallite.The manganese incorporated with the impregnation method is enriched on the catalyst's surface.The manganese promoter added with the impregnation method suppresses the reduction and carburization of the catalyst in H_2,CO,and syngas because of the excessive enrichment of manganese on the catalyst surface.The catalyst added manganese using the coprecipitation method has the highest CO conversion(51.9%)and the lowest selectivity for heavy hydrocarbons(C_(12 )).
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| 关 键 词： | 催化剂 锰元素 合成方法 化学实验 |
| 收稿时间： | 5 February 2007 |
| 修稿时间： | 2007-02-05 |
Effect of Manganese Incorporation Manner on an Iron-Based Catalyst for Fischer-Tropsch Synthesis |
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| Tingzhen Li Yong Yang Chenghua Zhang Zhichao Tao Haijun Wan Xia An Hongwei Xiang Yongwang Li.Effect of Manganese Incorporation Manner on an Iron-Based Catalyst for Fischer-Tropsch Synthesis[J].Journal of Natural Gas Chemistry,2007,16(3):244-251. |
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| Authors: | Tingzhen Li Yong Yang Chenghua Zhang Zhichao Tao Haijun Wan Xia An Hongwei Xiang Yongwang Li |
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| Institution: | aState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, Shanxi, China;bGraduate University of the Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | A systematic study was undertaken to investigate the effects of the manganese incorporation
manner on the textural properties, bulk and surface phase compositions, reduction/carburization
behaviors, and surface basicity of an iron-based Fischer-Tropsch synthesis (FTS) catalyst. The catalyst
samples were characterized by N2 physisorption, X-ray photoelectron spectroscopy (XPS), H2 (or
CO) temperature-programmed reduction (TPR), CO2 temperature-programmed desorption (TPD), and
MÖssbauer spectroscopy. The FTS performance of the catalysts was studied in a slurry-phase continuously
stirred tank reactor (CSTR). The characterization results indicated that the manganese promoter incorporated
by using the coprecipitation method could improve the dispersion of iron oxide, and decrease the
size of the iron oxide crystallite. The manganese incorporated with the impregnation method is enriched
on the catalyst’s surface. The manganese promoter added with the impregnation method suppresses the
reduction and carburization of the catalyst in H2, CO, and syngas because of the excessive enrichment of
manganese on the catalyst surface. The catalyst added manganese using the coprecipitation method has
the highest CO conversion (51.9%) and the lowest selectivity for heavy hydrocarbons (C12+). |
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| Keywords: | Fischer-Tropsch synthesis iron-based catalyst manganese promoter incorporation manner |
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