石油化工高等学校学报
石油化工高等學校學報
석유화공고등학교학보
JOURNAL OF PETROCHEMICAL UNIVERSITIES
2014年
5期
33-38
,共6页
氮化碳材料%凹凸棒土%N2 吸附%CO2 吸附%模拟剂
氮化碳材料%凹凸棒土%N2 吸附%CO2 吸附%模擬劑
담화탄재료%요철봉토%N2 흡부%CO2 흡부%모의제
Carbon nitride materials%Attapulgite%N2 absorption%CO2 absorption%Template
以天然凹凸棒土为模板剂,采用乙二胺-四氯化碳、双氰胺、尿素及三聚氰胺四类含氮有机化合物作为前驱体,合成了4种具有石墨型结构的氮化碳材料(CN-EDA-CTC、CN-DCD、CN-UREA、CN-MEM)。通过 X-射线粉末衍射、热重、N2吸附及CO2吸附等手段表征并测试了4种材料的结构及其吸附性能。结果表明,前驱体的结构和性质对合成的氮化碳材料的吸附性能有较大的影响,其中,对 CO2吸附能力最强的是 CN-UREA,吸附量分别为85.438 cm3/g(0℃)和58.931 cm3/g(25℃)。同时发现,选择天然凹凸棒土作为模板剂,并利用质量分数5% HF在磁力搅拌下处理样品,可以有效地提高孔容,增强对CO2的吸附能力。
以天然凹凸棒土為模闆劑,採用乙二胺-四氯化碳、雙氰胺、尿素及三聚氰胺四類含氮有機化閤物作為前驅體,閤成瞭4種具有石墨型結構的氮化碳材料(CN-EDA-CTC、CN-DCD、CN-UREA、CN-MEM)。通過 X-射線粉末衍射、熱重、N2吸附及CO2吸附等手段錶徵併測試瞭4種材料的結構及其吸附性能。結果錶明,前驅體的結構和性質對閤成的氮化碳材料的吸附性能有較大的影響,其中,對 CO2吸附能力最彊的是 CN-UREA,吸附量分彆為85.438 cm3/g(0℃)和58.931 cm3/g(25℃)。同時髮現,選擇天然凹凸棒土作為模闆劑,併利用質量分數5% HF在磁力攪拌下處理樣品,可以有效地提高孔容,增彊對CO2的吸附能力。
이천연요철봉토위모판제,채용을이알-사록화탄、쌍청알、뇨소급삼취청알사류함담유궤화합물작위전구체,합성료4충구유석묵형결구적담화탄재료(CN-EDA-CTC、CN-DCD、CN-UREA、CN-MEM)。통과 X-사선분말연사、열중、N2흡부급CO2흡부등수단표정병측시료4충재료적결구급기흡부성능。결과표명,전구체적결구화성질대합성적담화탄재료적흡부성능유교대적영향,기중,대 CO2흡부능력최강적시 CN-UREA,흡부량분별위85.438 cm3/g(0℃)화58.931 cm3/g(25℃)。동시발현,선택천연요철봉토작위모판제,병이용질량분수5% HF재자력교반하처리양품,가이유효지제고공용,증강대CO2적흡부능력。
Four graphitic-like carbon nitride materials (CN-EDA-CTC,CN-DCD, CN-UREA, CN-MEM) have been synthesized with ethylenediamine-carbon tetrachloride,dicyandiamide,urea and melamine as precursors,using attapulgite (ATP)as hard template.The new materials were characterized by XRD and TG,besides which,the N2 and CO2 absorption properties were tested repectively.The results indicated that the structure and properties of the precursors played an important role in the adsorption capacity of carbon nitride materials.In the four materials,the CN-UREA exhibited the highest capacity of CO2 with a capacity of 85.438 cm3/g at 0 ℃ and 58.931 cm3/g at 25 ℃.In addition,the results showed the attapulgite used as template in the new materials was removed thoroughly under magnetic stirring condition in 5% HF.The pore volumes and the CO2-absorption capacity of the samples were improved obviously.
