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Influence of calcination atmosphere on photocatalytic reactivity of K2La2Ti3O10 for water splitting YANG Ya-hui(杨亚辉)1, 2, QIU Guan-zhou(邱冠周)2, CHEN Qi-yuan(陈启元)1, FENG Qi-ming(冯其明)2, YIN Zhou...; Abstract: The layered perovskite type oxide K2La2Ti3O10 powders were prepared under air, Ar and H2 calcination atmospheres by sol-gel method......
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compounded with WO3 were prepared via a modified hydrolysis process and the 2% WO3-TiO2 catalysts with different oxygen vacancies were obtained by calcination at 873 K in H2 atmosphere. The catalysts... is 667 ?mol/(L·h). Key words: TiO2; oxygen vacancies; photocatalyst; calcination  ......
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prepared by low temperature combustion process.Special attention was paid to the influence of the glycine/metal ratio and calcination temperature on the powders phase structure, morphology and particle... are crystallized in a single fluorite structure.The crystalline size ranges from 9 to 24 nm, which increases with the increase of calcination temperature.The lower SEM images were characterized......
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58.37%,与预测值较接近(见表4).这证明了利用田口试验方法对煅烧参数进行优化设计是有效的,在实际煅烧中产物活性具有较好的重现性. 表3 煅烧试验安排及结果 Table 3 Arrangements and results of calcination experiments 方差分析可以计算出各因子对活性的贡献率[15],从而判断各因子对产物水化活性的影响大小.由表4... during calcination of magnesite[J]. Journal of Chinese Ceramics Society, 1989, 17(1): 64-69. [4] 崔 鑫, 邓 敏. 煅烧制度对MgO活性的影响[J].南京工业大学学报(自然科学版), 2008, 30(4): 52-55. CUI Xin, DENG Min. Effects......
, and the arsenite removal efficiency was also analyzed. The results show that the best calcination condition is that the pre-heat temperature is 180 ℃, pre-heat time is 20 min, calcination temperature is 350 ℃ and calcination time is 120 min. Calcination temperature is the main factor impacting arsenic removal. The higher calcination temperature leads to the more hematite generated in the granular adsorbent......
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