| 磷酸铝镍介孔催化材料的低热固相合成及形成机理 |
| Synthesis of Nickel Aluminophosphate Mesoporous Catalytic Material via Solid State Reaction at Low Temperature and Its Formation Mechanism |
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| 摘要: 以十六烷基三甲基溴化铵为模板，通过二水磷酸二氢钠、六水氯化铝与六水氯化镍的固相反应直接合成了磷酸铝镍(NiAlPO)介孔材料。用X-射线衍射、高分辨透射电镜、N2脱附-吸附、红外光谱仪等分析技术对材料进行了物相与表面织构表征，通过电感耦合等离子发射光谱仪对材料的元素组成进行分析；探讨了磷酸铝镍介孔材料的形成机理。结果表明，金属镍已进入了磷酸铝骨架，镍的含量为5.15wt%；所得介孔材料呈蠕虫状、无定形的六面体结构；其BET比表面积为157.3 m2·g-1，孔径分布中心为3.65和5.3 nm。P(Al)-O-Ni键伸缩振动所产生的吸收峰为983.7 cm-1。 |
| 关键词: 磷酸铝镍 介孔材料 固相反应 形成机理 |
| 基金项目: |
| Abstract: Nickel aluminophosphate (NiAlPO) mesoporous catalytic material is successfully prepared by solid-state reaction of nickel(Ⅱ) chloride hexahydrate (NiCl2·6H2O), aluminium chloride hexahydrate (AlCl3·6H2O) and sodium dihydrogen phosphate dihydrate (NaH2PO4·2H2O) with cetyltrimethylammonium bromide (CTAB) as a template agent. The textural properties of the materials were characterized by the X-ray diffraction, high resolution transmission electron microscopy, N2-physisorption at 77 K, Fourier transform infrared spectroscopy and the element content was determined by inductively couple plasma atomic emission sportrometry (ICP-AES). The proposal formation mechanism of mesoporous NiAlPO material was investigated. The results show that nickel has been incorporated into the framework of aluminophosphate (AlPO), the nickel content is 5.15wt%. The NiAlPO mesoporous material is composed of the worm-like, amorphism and haxehedraon structure, the specific surface area of 157.3 m2·g-1, pore size distribution centre of 3.65 nm and 5.3 nm. Meanwhile, the stretching vibration peak (983.7 cm-1) of P(Al)-O-Ni bond in the catalytic material are obtained. |
| Keywords: nickel aluminophosphate mesoporous material solid-state reaction formation mechanism |
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| 刘少友,王 翔,唐文华,蒋天智,冯庆革.磷酸铝镍介孔催化材料的低热固相合成及形成机理[J].无机化学学报,2009,25(5):799-804. |
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