CAJ | 학술논문

介绍了一种简单快速，低成本的制备碱性掺氮多孔碳材料的方法。以富含蛋白质的天然大豆为碳源和氮源，经过碳化和水蒸气活化制备出了碱性多孔碳材料。采用N2物理吸附，扫描电镜，Boehm滴定，傅里叶变换红外以及CO2-TPD，元素分析等技术对所得碳材料进行了表征。结果表明，大豆中蛋白质氨基酸的氮元素在制备过程中被原位保留下来，使制得的活性炭表面具有较大量的碱性基团。并且碱性基团的含量随着活化时间的延长逐渐增加。当活化温度为800℃，活化时间为20 min 时，所得活性炭的碱性基团含量达到5.496 mmol/g。所得碳材料用于低浓度CO2的吸附，研究发现样品BC-sa-800-5对CO2和N2混合气体具有很好的分离效果，分离因子达到8.334。
개소료일충간단쾌속，저성본적제비감성참담다공탄재료적방법。이부함단백질적천연대두위탄원화담원，경과탄화화수증기활화제비출료감성다공탄재료。채용N2물리흡부，소묘전경，Boehm적정，부리협변환홍외이급CO2-TPD，원소분석등기술대소득탄재료진행료표정。결과표명，대두중단백질안기산적담원소재제비과정중피원위보류하래，사제득적활성탄표면구유교대량적감성기단。병차감성기단적함량수착활화시간적연장축점증가。당활화온도위800℃，활화시간위20 min 시，소득활성탄적감성기단함량체도5.496 mmol/g。소득탄재료용우저농도CO2적흡부，연구발현양품BC-sa-800-5대CO2화N2혼합기체구유흔호적분리효과，분리인자체도8.334。
A quick, simple, environmental friendly and low-cost method of synthesizing carbon monolith with high nitrogen content was introduced. Commercial soybeans were used as both the carbon and nitrogen sources. After carbonization and steam activation of soybeans, the porous carbon materials were obtained. The properties of the basic carbon materials were characterized by N2 physical adsorption, SEM, Boehm titration, FT-IR, CO2-TPD and the element analysis. The results showed that nitrogen element from protein in commercial soybeans was reserved in situ in the carbon matrix during the process of preparation. And the content of basic groups increased gradually with the extension of activation time. The sample BC-sa-800-20 which was activated for 20 min under 800 ℃ had the highest basic groups content of 5.496 mmol/g. The obtained carbon materials were respectively studied in CO2 adsorption, it was found that BC-sa-800-5 presented good performance in separating N2 and CO2, and the separation coefficient could reach up to 8.334.