张月,颜双,孙凯利,王桂雪,谢广文.负载型Co-Ni-Cr-P/γ-Al2O3催化剂的制备及其制氢性能研究[J].表面技术,2017,46(12):179-185.
ZHANG Yue,YAN Shuang,SUN Kai-li,WANG Gui-xue,XIE Guang-wen.Preparation and Hydrogen Production Property of Supported Co-Ni-Cr-P/γ-Al2O3 Catalysts[J].Surface Technology,2017,46(12):179-185 |
| 负载型Co-Ni-Cr-P/γ-Al2O3催化剂的制备及其制氢性能研究 |
| Preparation and Hydrogen Production Property of Supported Co-Ni-Cr-P/γ-Al2O3 Catalysts |
| 投稿时间：2017-04-27 修订日期：2017-12-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2017.12.029 |
| 中文关键词: 催化剂 化学镀 γ-Al2O3基体 硼氢化钠 制氢 Co-Ni-Cr-P合金 |
| 英文关键词:catalyst electroless plating γ-Al2O3 substrate sodium borohydride hydrogen generation Co-Ni-Cr-P alloy |
| 基金项目: |
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| Author | Institution |
| ZHANG Yue | School of Materials Science & Engineering, Qingdao University of Science & Technology, Qingdao 266042, China |
| YAN Shuang | School of Materials Science & Engineering, Qingdao University of Science & Technology, Qingdao 266042, China |
| SUN Kai-li | School of Materials Science & Engineering, Qingdao University of Science & Technology, Qingdao 266042, China |
| WANG Gui-xue | School of Materials Science & Engineering, Qingdao University of Science & Technology, Qingdao 266042, China |
| XIE Guang-wen | School of Materials Science & Engineering, Qingdao University of Science & Technology, Qingdao 266042, China |
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| 中文摘要: |
| 目的 优化Co-Ni-Cr-P合金催化剂镀液配方，探究其催化碱性NaBH4溶液制备氢气的最佳条件。方法 利用化学镀的方法，在三氧化二铝（γ-Al2O3）基体表面镀覆了Co-Ni-Cr-P合金。利用X射线衍射仪（XRD）、场发射扫描电子显微镜（FE-SEM）、X射线能量色散谱仪（EDS）、化学吸附仪（BET）和电感耦合等离子体发射光谱（ICP），对该催化剂的结构、微观形貌等进行了系统表征。结果 Co-Ni-Cr-P合金镀层均匀地分布在三氧化二铝载体表面，ICP测得该催化剂的相对组成为48.46%Co+ 19.77%Ni+ 21.02%Cr+10.75%P（质量分数）。化学镀Co-Ni-Cr-P的实验参数为：21.96 g/L硫酸钴，2.44 g/L硫酸镍，0.6 g/L硝酸铬，20 g/L柠檬酸钠，10 g/L氟化铵，40 g/L次亚磷酸钠，pH=9，温度(90±1) ℃。结论 20 mL含4%的硼氢化钠溶液在40 ℃时的产氢速率约为1500 mL/(g•min)。根据动力学计算可得，Co-Ni-Cr-P/γ-Al2O3合金催化剂催化碱性NaBH4溶液制备氢气的反应活化能为45.96 kJ/mol。 |
| 英文摘要: |
| The work aims to study optimum conditions of generating hydrogen by catalyzing alkaline NaBH4 solution by optimizing formula of Co-Ni-Cr-P alloy catalysts. The Co-Ni-Cr-P alloy was coated on the surface of aluminium sesquioxide (γ-Al2O3) in the method of electroless deposition. Structure and microstructure of the Co-Ni-Cr-P/γ-Al2O3 catalysts were characterized systematically with X-ray diffractometer (XRD), field emission scanning electron microscope (FE-SEM), X-ray energy dispersive spectrometer (EDS), nitrogen adsorption-desorption isotherm (BET) and inductively coupled plasma atomic emission spectrometer (ICP). Co-Ni-Cr-P alloy coating was well distributed onto the surface of carrier γ-Al2O3. According to ICP results, relative composition was 48.46wt% Co, 19.77wt% Ni, 21.02wt% Cr and 10.75wt% P (mass fraction, similarly hereinafter). Experiment parameters of electrolessly plating Co-Ni-Cr-P were: 21.96 g/L cobalt sulfate heptahydrate, 2.44 g/L nickel sulfate hexahydrate, 0.6 g/L Chromic nitrate nonahydrate, 20 g/L sodium citrate dehydrate, 10 g/L ammonium fluoride, 40 g/L sodium hypophosphite Monohydrate, pH=9 and temperature (90±1) ℃. Average hydrogen generation rate of 20 mL 4% NaBH4 solution was 1500 mL/(g•min). Reaction activation energy of the Co-Ni-Cr-P/γ-Al2O3 alloy catalysts in hydrogen generation was measured to be 45.96 kJ/mol. |
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