CAJ | 학술논문

采用电沉积Pt在陶瓷膜的方法制得了一种新型的可用于醇类阳极氧化的陶瓷基底电极,采用在电沉积前用氧化钨的溶胶或硅钨酸或硅钼酸的溶液浸渍陶瓷膜的方法可将钨和钼添加到电极中.实验发现:钨和钼的添加可以十分显著地提高催化剂的活性,如:对于甲醇的阳极氧化,添加硅钼酸的电极上的电流密度可达到187 mA/cm2,为相同条件下不含硅钼酸的电极的5倍多.对于乙醇的阳极氧化也得到了相同的结果.
채용전침적Pt재도자막적방법제득료일충신형적가용우순류양겁양화적도자기저전겁,채용재전침적전용양화오적용효혹규오산혹규목산적용액침지도자막적방법가장오화목첨가도전겁중.실험발현:오화목적첨가가이십분현저지제고최화제적활성,여:대우갑순적양겁양화,첨가규목산적전겁상적전류밀도가체도187 mA/cm2,위상동조건하불함규목산적전겁적5배다.대우을순적양겁양화야득도료상동적결과.
A new type of ceramic-based electrode that could be utilized in anodic oxidation of alcohol was prepared by electrodepositing platinum onto a ceramic membrane. Tungsten and molybdenum were incorporated into the electrode by immersing the membrane in a sol of tungsten oxide or tungstosilicic acid or silicomolybdic acid. The tungsten and molybdenum promoted the activity of the electrode to a considerable degree. The current density of the Pt-Mo-Si/C/M electrode could be as high as 187 mA/cm2 during the oxidation of methanol, and it was five times more active than that of Pt/C/M at the same working conditions. Similar results were obtained in the oxidation of ethanol.