Abstract: A NiB/C catalyst was prepared by a chemical reduction method, and characterized by inductively coupled plasma direct-reading spectrometer (ICP), X-ray diffraction (XRD), scanning electron microscopy (SEM) and differential scanning calorimetry (DSC) techniques. Its catalytic properties were investigated by the reaction of catalytic hydrogenation of nitrobenzene to p-aminophenol (PAP). The characterization result suggests the composition of the amorphous NiB alloy is Ni79.4B20.6, the highest crystallization temperature is 643 K and the alloy particle size is about 30 nm. Nitrobenzene conversion of 80.23%, PAP yield of 11.21% was obtained. The results show that NiB/C catalyst had high catalytic activity on the reaction of catalytic hydrogenation of nitrobenzene.

Key words: NiB/C catalyst, Nitrobenzene, Catalytic hydrogenation, p-Aminophenol, Zinc sulfate

摘要： 采用化学还原法制备了ＮｉＢ／Ｃ催化剂，利用电感耦合等离子直读光谱（ＩＣＰ）、Ｘ－射线衍射（ＸＲＤ）、扫描电镜（ＳＥＭ）和差示扫描量热分析（ＤＳＣ）等表征手段对其组成、结构、形貌及最高晶化温度进行了分析，对硫酸锌水溶液中硝基苯催化加氢制备对氨基苯酚（ＰＡＰ）的反应及其催化性能进行了研究。表征结果显示，ＮｉＢ／Ｃ催化剂中非晶态ＮｉＢ合金的组成为Ｎｉ７９．４Ｂ２０．６，最高晶化温度为６４３Ｋ，合金颗粒粒度约为３０ｎｍ。实验结果表明，硫酸锌溶液中硝基苯催化加氢反应硝基苯转化率为８０．２３％，对氨基苯酚选择性为１１．２１％，ＮｉＢ／Ｃ催化剂具有较高的催化加氢活性。

关键词: ＮｉＢ／Ｃ催化剂 , 硝基苯 , 催化加氢 , 对氨基苯酚 , 硫酸锌