摘要
选择氧化铝为载体,采用化学镀方法在其表面负载非晶合金,制备负载型非晶合金催化剂Ni-W-P/Al2O3。利用能量色散X射线谱仪(EDX)对非晶合金成分进行分析,表明合金中含钨质量分数4.98%、磷质量分数5.95%。选择不同的温度对非晶合金进行热处理,利用X射线衍射(XRD)对其结构进行了表征,表明钨元素的加入可使非晶态Ni-P合金的晶化温度至少提高了25℃。通过在固定床反应器中费托合成反应制甲烷的实验来评价制备的负载型镍基多元合金催化剂的催化性能。结果表明,Ni-W-P/Al2O3负载型非晶态合金催化剂具有较高的活性和选择性。
In this paper,the supported amorphous alloy catalysts Ni-W-P/Al2O3were prepared using alumina as supports via electroless plating.The composition of amorphous Ni-W-P alloy was characterized by Energy Dispersive X-ray Spectrometer（EDX）.The result showed that the Ni-W-P alloy contains 4.98%tungsten,and 5.95% phosphorus.After being heat-treated in different temperature,the amorphous alloy was characterized by X-ray Diffractometer（XRD）.The result showed that the crystallization temperature of Ni-P alloy can be enhanced at least 25 ℃ by adding tungsten element.The catalytic property of the prepared supported catalysts was evaluated by Fisher-Tropsch synthesis in a fix-bed reactor.The result showed that the Ni-W-P/Al2O3catalysts exhibit high activity and selectivity.
出处
《青岛科技大学学报（自然科学版）》
CAS
北大核心
2013年第4期357-361,共5页
Journal of Qingdao University of Science and Technology:Natural Science Edition
基金
山东省自然科学基金项目(ZQ2011EMM005)
关键词
非晶态合金催化剂
热稳定性
费托合成
催化性能
amorphous alloy catalysts
thermal stability
Fischer-Tropsch synthesis
catalytic performance
