Lanthanum-Promoted Ru／Sepiolite in Ammonia Synthesis

Theiron basedcatalystsforammoniasynthesishavethecommonproblemsoflowefficiency ,highconsumptionofenergy ,strictrequirementforequip ment,andlowoperationflexibility ,etc .,anditishardtoradicallylowerenergyconsumptionbysimplyimprovingiron basedcatalystsproper…     

电沉积镍薄膜微观结构的动力学Monte Carlo模拟

采用动力学Monte Carlo方法模拟动力学控制条件下电沉积多晶镍薄膜的生长.研究了表面扩散对电镀薄膜微观结构的影响.模拟结果显示,溶液温度和沉积速率是2个非常重要的参数,它们能改变吸附原子的扩散能力,因而对薄膜的晶粒尺寸、相对密度、表面粗糙度等微观结构产生显著影响.此外,还得到该模式下薄膜的生长因子,大约为0.46.