镁基储氢材料用于噻吩加氢反应

Hydrogenation reaction of thiophene by magnesium-based hydrogen-storage materials

用煤基碳作为助磨剂,将镁在氢气中进行反应球磨制得储氢材料,然后利用储氢材料在一定温度下受热时释放出的氢使噻吩发生加氢反应生成H2S。结果表明,储氢材料在低于差示扫描量热分析仪测定的初始放氢温度下就能使噻吩加氢生成H2S,在适宜温度下储氢材料的放氢与噻吩的加氢相匹配时可生成较多的H2S;反应后储氢材料中的MgH2释放出氢,镁与硫结合为晶态MgS;储氢材料中添加钼有利于噻吩的加氢反应。

The hydrogen-storage materials were prepared from magnesium by reactive ball-milling under hydrogen atmosphere with coal-based carbon as milling aid,and then the hydrogen-storage materials were utilized for the hydrogenation reaction of thiophene to convert into H2S with the hydrogen released from the materials at certain temperatures.It was shown that hydrogenation reaction of thiophene took place at the temperature lower than the initial dehydrogenation temperature of the hydrogen-storage materials determined by differential scanning calorimetry.When the dehydrogenation of hydrogen-storage materials coupled with the hydrogenation of thiophene at suitable temperatures,the production of H2S increased.After reaction,the MgH2 in the hydrogen-storage materials released hydrogen and the magnesium combined with sulfur to become into crystalline MgS.To add molybdenum into hydrogen-storage material was favor to the hydrogenation of thiophene.