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| 折扣與優(yōu)惠：團(tuán)購最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:本課題采用熱分解法制備磁性活性炭，根據(jù)不同的含鐵物質(zhì)、不同的溫度、不同的時間，不同的碳鐵比試驗，確定了熱解法制備Fe3O4-活性炭產(chǎn)品的最佳條件。研究了Fe3O4-活性炭產(chǎn)品中的鐵化學(xué)物相的分析方法：將磁鐵吸出的樣品用濃鹽酸溶解，過濾，定溶后，部分溶液直接用重鉻酸鉀測定二價鐵（同時測定活性炭產(chǎn)生的空白值），部分溶液用過量鋅粉還原后，又用重鉻酸鉀測定總鐵，由此得到兩種價態(tài)的鐵含量，并計算出二者摩爾比。并根據(jù)資料方法分離和測定磁鐵含量。最后加入氫氧化鎳，在高溫下制備出磁性活性炭載鎳催化劑，用磁性活性炭載鎳催化劑，做丙酮、甘油的催化加氫實驗，結(jié)果表明：用氨水與氯化鐵反應(yīng)后，活性炭載鐵量為8%時，在木炭保護(hù)下，600℃時，在馬弗爐中反應(yīng)1.5h，制備所得的磁性活性炭磁性效果最好，制備得到的磁性活性炭載Ni催化劑，對丙酮、甘油的催化加氫效果明顯。 關(guān)鍵詞：活性炭；熱分解；Fe3O4；催化劑
Abstract:This subject adopts thermal decomposition for preparing magnetic activated carbon and confirms the best condition of making activated carbon Fe3O4 according to different ferrous material, different temperature, the different time and different carbon iron ratio tests. This thesis has a research on the analysis method of iron chemicals in Fe3O4 -carbon product. Its procedures include samples dissolution with strong hydrochloric acid, filtering, constant volume, some solution with potassium dichromate assaying bivalent iron directly (simultaneous determination of null value made by activated carbon), part of solution restored by excessive zinc powder, and assaying the total sum of iron with potassium dichromate, as a result of two valence iron content and computing two Moore ratio. The magnet content could be separated and assayed according to the method. The last step is adding nickel hydroxide to make nickel catalyst with magnetic activated carbon under high temperature, use magnetic activated carbon load nickel as catalyst, do acetone, glycerin catalytic hydrogenation experiment. The results shows that using the ammonia and ferric chloride, 8% iron content loaded by activated carbon, protection under charcoal, the temperature of 600 ℃ and 1.5h in muffle furnace, The obtained magnetic activated carbon which carrying Ni has an obvious effect on catalyst acetone and glycerin of catalysis hydrogenation. Keywords: activated carbon；thermal decomposition ; Fe3O4;catalyst |
