神府煤中低温热解前后表面官能团和孔隙变化规律的研究  

Study on Variation Law of Surface Functional Groups and Pore of Shenfu Coal After Low-Middle Temperature Pyrolysis

作　　者：赵世永[1] 吴沛沛[1] 李鑫 徐婕 张生军 龙江[3] 

机构地区：[1]西安科技大学化学与化工学院,陕西西安710054 [2]陕西煤业化工技术研究院有限责任公司,陕西西安710070 [3]国土资源部煤炭勘查与综合利用重点实验室,陕西西安710044

出　　处：《煤炭工程》2015年第12期114-117,共4页Coal Engineering

摘　　要：为研究神府煤热解前后表面官能团及孔隙的变化规律,选取神木红柳林煤矿原煤及以其为原料通过立式炉热解生产的半焦为研究对象,采用氮气吸附、扫描电镜、红外光谱及X光电子能谱等分析手段,对原煤及半焦样品进行了分析。实验结果表明,与原煤相比,半焦比表面积变大,拥有更发达的孔隙结构;半焦与原煤官能团相似,但含量不同;煤热解后,表面官能团发生变化,半焦表面C-C、C-O键增加,C-H、C=O和O=C-O键减少。To investigate the variation law of surface functional groups and pore of Shenfu coal after low - middle temperature pyrolysis, experiment was conducted on the raw coal from Hongliulin Coal Mine and the semi - coke pyrolyzed in vertical furnace, using nitrogen adsorption, FTIR spectrum, XPS and SEM. The results show that, the specific surface area of semi - coke is larger and the pore structure is more developed compared with raw coal. Functional groups of semi - coke and raw coal are similar while the contents are different, after pyrolysis the C - C and C - O bonds increases andC-H, C=Oand O=C-O bonds reduces.

关 键 词：神府煤 半焦 官能团 孔结构 比表面积 XPS 

分 类 号：TQ531[化学工程—煤化学工程]