Tay Turgay, Ucar Suat, Karagöz Selhan
Department of Chemistry, Faculty of Science, Anadolu University, Eskisehir, Turkey.
J Hazard Mater. 2009 Jun 15;165(1-3):481-5. doi: 10.1016/j.jhazmat.2008.10.011. Epub 2008 Oct 14.
Lignocellulosic materials are good and cheap precursors for the production of activated carbon. In this study, activated carbons were prepared from the pyrolysis of soybean oil cake at 600 and 800 degrees C by chemical activation with K(2)CO(3) and KOH. The influence of temperature and type of chemical reagents on the porosity development was investigated and discussed. K(2)CO(3) was found more effective than KOH as a chemical reagent under identical conditions in terms of both porosity development and yields of the activated carbons. The maximum surface area (1352.86 m(2)g(-1)) was obtained at 800 degrees C with K(2)CO(3) activation which lies in the range of commercial activated carbons. Elemental analyses of the activated carbons indicate insignificant sulphur content for all activated carbons. The ash and sulphur contents of the activated carbons obtained with chemical activation by K(2)CO(3) were lower than those by chemical activation with KOH.
木质纤维素材料是生产活性炭的优质且廉价的前驱体。在本研究中，通过用碳酸钾（K₂CO₃）和氢氧化钾（KOH）进行化学活化，在600℃和800℃下对大豆油饼进行热解制备活性炭。研究并讨论了温度和化学试剂类型对孔隙率发展的影响。在相同条件下，就孔隙率发展和活性炭产率而言，发现碳酸钾作为化学试剂比氢氧化钾更有效。在800℃下用碳酸钾活化得到的最大表面积（1352.86 m²g⁻¹）处于商业活性炭的范围内。活性炭的元素分析表明，所有活性炭的硫含量均微不足道。用碳酸钾化学活化得到的活性炭的灰分和硫含量低于用氢氧化钾化学活化得到的活性炭。
