Preparation and Characteristics of Rare Earth Loaded Titanium Dioxide

Composite oxide catalysts Eu/TiO 2, Ce/TiO 2, Y/TiO 2 (RE/TiO 2) were prep ared by impregnation method and characterized by means of UV-Vis spectroscopy, TEM and BET. The results indicate that the size of TiO 2 has different effect o n the modification effic iency. The catalytic activity of micron scale TiO 2 increases by 136% and 59% o w ing to the addition of Y and Ce, respectively, while the catalytic activity of n anoscale TiO 2 decreases due to the doping of Y and Ce.

钛白废酸废水治理及副产石膏应用探讨

介绍了目前国内外钛白废酸、废水的主要治理途径,提出了钛白废酸、废水二步中和、二步沉淀法生产红白石膏的综合治理方案。结合红白石膏的利用途径,分析了国内外石膏工业的发展状况、石膏及化学石膏在建筑行业的应用和发展前景,并对这种治理方案的成本进行了估算。该治理方案变单纯投入性治理为综合利用治理,降低了污染治理成本。