| 氮化SBA-15负载高分散过渡金属用于丙烷高效直接脱氢 |
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| 引用本文： | 李海涛,赵银峰.氮化SBA-15负载高分散过渡金属用于丙烷高效直接脱氢[J].无机盐工业,2023,55(2):141-148. |
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| 作者姓名： | 李海涛 赵银峰 |
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| 作者单位： | 1.沈阳化工大学，辽宁沈阳 1101422.中国科学院大连化学物理研究所，低碳催化技术国家工程研究中心，辽宁大连 116023 |
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| 摘 要： | 以氮化法修饰的介孔二氧化硅（SBA-15）为载体，采用浸渍法制备了不同过渡金属（钴、镍、铁、铜）脱氢催化剂。通过X射线衍射光谱和N2吸附-脱附分析表明氮化后的载体仍能保持良好的介孔结构；通过扫描电子显微镜分析表明金属处于高度分散的良好状态；通过程序升温还原和X射线光电子能谱分析表明氮化SBA-15改变了金属的电子结构，增强了载体与金属之间的相互作用力。采用定量浸渍法制备了金属负载量为1%（质量分数）的脱氢催化剂，并进行了性能评价。结果表明，丙烷脱氢催化剂活性顺序由高到低依次为Co-SBA-15N900-1%、Fe-SBA-15N900-1%、Cu-SBA-15N900-1%、Ni-SBA-15N900-1%，其中Co-SBA-15N900-1%催化剂的丙烷转化率为33%，丙烯选择性为88%。
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| 关 键 词： | 丙烷脱氢 过渡金属 高分散 氮化SBA-15 |
| 收稿时间： | 2022-05-23 |
Nitriding SBA-15 loaded highly dispersed transition metals for efficient direct dehydrogenation of propane |
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| LI Haitao,ZHAO Yinfeng.Nitriding SBA-15 loaded highly dispersed transition metals for efficient direct dehydrogenation of propane[J].Inorganic Chemicals Industry,2023,55(2):141-148. |
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| Authors: | LI Haitao ZHAO Yinfeng |
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| Affiliation: | 1. Shenyang University of Chemical Technology，Shenyang 110142，China2. Dalian Institute of Chemical Physics，Chinese Academy of Sciences，National Engineering Research Center of Lower-Carbon Catalysis Technology，Dalian 116023，China |
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| Abstract: | Dehydrogenation catalysts with different transition metals of Co，Ni，Fe，Cu were prepared by impregnation method with SBA-15 modified by nitridation method as carrier.The mesoporous structure of the support after nitridation was confirmed by X-ray diffraction（XRD） and N2 adsorption desorption analysis.Scanning electron microscopy（SEM） confirmed that the metal was in a good state of high dispersion.Temperature programmed reduction（H2-TPR） and X-ray photoelectron spectroscopy（XPS） proved that nitriding SBA-15 changed the electronic structure of the metal，and the interaction between the carrier and the metal was significantly enhanced.Metal-loaded samples with a content of 1% were prepared by quantitative impregnation method，and their properties were evaluated.The experimental results showed that the order of catalytic PDH activity of different metals for propane dehydrogenation was Co-SBA-15N900-1%，Fe-SBA-15N900-1%，Cu-SBA-15N900-1%，Ni-SBA-15N900-1%.The Co-SBA-15N900-1% exhibited a propane conversion of 33% and a propylene selectivity of 88%，indicating its promising utilization in industry. |
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| Keywords: | dehydrogenation of propane transition metals high dispersion nitrided SBA-15 |
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