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srdong1233銅蟲 (小有名氣)
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本文利用有機高分子作為模板，硝酸鈰和碳酸氫銨為原料，控制合成超細氧化鈰。通過對PSS濃度、加料方式、陳化時間等的研究尋找最好的制備條件。采用掃描電鏡、粒度儀、比表面積儀等手段進行了表征。結(jié)果表明，利用有機物PSS為模板劑合成的超細氧化鈰的條件為：正加，攪拌速度為300r/min，陳化時間為3h。 采用本方法制備出的氧化鈰為薄片狀顆粒，當PSS濃度為0.5mol/L是效果最好，但由于時間有限，不能考慮其他制備條件，所制顆粒形狀不規(guī)則，有待進一步研究。 [ Last edited by srdong1233 on 2010-6-16 at 16:47 ] |
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zsw4882535
銀蟲 (小有名氣)
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發(fā)芽土豆(金幣+1):謝謝參與 2010-06-16 20:20:15
srdong1233(金幣+15, 翻譯EPI+1):謝謝 2010-06-17 14:27:54
發(fā)芽土豆(金幣+1):謝謝參與 2010-06-16 20:20:15
srdong1233(金幣+15, 翻譯EPI+1):謝謝 2010-06-17 14:27:54
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翻譯如下： This text take organic polymer as a template ，cerous nitrate and ammonium bicarbonate as raw materials，controlling synthetize superfine cerium oxide . we try to determine the best Preparation Conditions by conducting research to find the optimal consistency of PSS , charging style and value of aging time .Characterised by scanning electron microscope (SEM) ,WQL and surface area analyzer , it is showed by the result that the optimal Preparation Conditions to synthetize superfine cerium oxide comes down to this : Ortho charging ,stirring rate being 300r/min and aging time being 3h. Cerium oxide synthetized in this way appear to be lamellar granules , consistency of PSS being 0.5mol/L get the best result .But as time is limitied,we can’t take other Preparation Conditions into account ,which leads to the irregular shape of the granules ,thus further research is needed. 相關(guān)單詞： charging style ：加料方式 aging time：陳化時間 scanning electron microscope:掃描電鏡 WQL：粒度儀 surface area analyzer：比表面積儀 Ortho charging ：正加料法  |
2樓2010-06-16 19:19:10
noleg
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wypward:謝謝參與，下次要快點下手，呵呵 2010-06-16 21:54:36
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A superfine cerium oxide was controllable template synthesized with polymer PSS as the template and cerium nitrate and ammonium hydrogen carbonate as starting materials. The optimum conditions for preparation was found through studying on the PSS's concentration, charging manner, and ageing time. The superfine compound was characterized by means of SEM, particle size analyzer, and specific surface area meter. The result showed that conditions for the the PSS template synthesis of superfine cerium oxide is as: 正加？, agitating at 300rpm, ageing for 3h. The cerium oxide obtained by this procedure are flaky particles, and the best result will be got when PSS's concentration is 0.5mol/L. However, further investigation should be carried out, due to the time limit, no sufficient conditions for preparation, and the irregular shaped particles. |
3樓2010-06-16 20:23:25
noleg
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發(fā)芽土豆(金幣+1):謝謝參與 2010-06-16 20:25:50
srdong1233(金幣+15):謝謝 2010-06-17 14:28:32
發(fā)芽土豆(金幣+1):謝謝參與 2010-06-16 20:25:50
srdong1233(金幣+15):謝謝 2010-06-17 14:28:32
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A superfine cerium oxide was controllable template synthesized with polymer PSS as the template and cerium nitrate and ammonium hydrogen carbonate as starting materials. The optimum conditions for preparation was found through studying on the PSS's concentration, charging manner, and ageing time. The superfine compound was characterized by means of SEM, particle size analyzer, and specific surface area meter. The result showed that conditions for the the PSS template synthesis of superfine cerium oxide is as: ortho charging, agitating at 300rpm, ageing for 3h. The cerium oxide obtained by this procedure are flaky particles, and the best result will be got when PSS's concentration is 0.5mol/L. However, further investigation should be carried out, due to the time limit, no sufficient conditions for preparation, and the irregular shaped particles. |
4樓2010-06-16 20:24:50
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