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本文以气相色谱为主配合红外光谱、差热热重和X衍射等手段研究了Co(Ⅱ)、Ni(Ⅱ)、Cu(Ⅱ)水杨酸配合物的热稳定性。实验结果表明,这些化合物在He和H_2中的热分解都经过三个过程:1.放出结晶水;2.放出Co_2,分解为羧酸盐;3.放出CO_2,产生呫(口辛)酮,最终分解为金属。实验表明Co(Ⅱ)、Ni(Ⅱ)配合物的分解产物对CO2_加氢有催化剂作用。把以上实验与差热热重实验对照取得了更为园满的结果。
In this paper, the thermal stability of Co (Ⅱ), Ni (Ⅱ) and Cu (Ⅱ) salicylic acid complexes were studied by gas chromatography with infrared spectroscopy, DTA and X-ray diffraction. The experimental results show that the thermal decomposition of these compounds in He and H 2 goes through three processes: 1. The crystallization of water is released; 2. The Co 2 is released and decomposed into carboxylates; 3. The CO 2 is released to produce xanthones, The final decomposition of metal. Experiments show that the decomposition products of Co (Ⅱ) and Ni (Ⅱ) complexes have a catalytic effect on CO2 hydrogenation. The above experiment and differential thermo gravimetric control made a more satisfactory result.