燃料化学学报2016，Vol.44Issue(11)：1297-1303,7.
胜利褐煤焦钙催化水蒸气气化反应中活性微结构分析
Analysis of active microstructure during steam gasification of Shengli char catalyzed by calcium component
摘要
Abstract
The catalytic effect of calcium component on steam gasification of Shengli lignite char was studied. Demineralized coal samples were loaded with calcium oxide and pyrolyzed at 1 100℃ ( Ca-J ) . Ca-J+ was prepared from Ca-J treated by hydrochloric acid. The char samples were characterized by BET, SEM-EDS, XRD, FT-IR and XPS. The steam gasification of the char samples was performed in a micro fixed bed reactor. The possible catalytic active micro structure was discussed and proposed. The results show that carbon conversion and reactivity index of Ca-J and Ca-J+ samples during steam gasification were substantially similar, but much higher than those of demineralized char samples (SL+-J). Ca(CH3COO)2 and Ca-OOR, two calcium species are present in Ca-J+ sample determined by XPS. Chemical analysis and SEM-EDS prove that calcium content of Ca-J+ decreases by more than 97% than that of Ca-J sample. XRD analysis indicates free inorganic mineral ( CaS, CaO) is removed by hydrochloric acid. FT-IR spectra show C=O, C-O peaks present in Ca-J and Ca-J+samples. So it is postulated that “R-O-Ca-O-R'” ( R and R'are aliphatic and aromatic structures, respectively) is the catalyst active microstructure during char steam gasification.关键词
胜利褐煤焦/水蒸气气化/钙催化/活性微结构Key words
Shengli char/steam gasification/catalysis of calcium component/active microstructure分类
化学化工引用本文复制引用
李娜,刘全生,李阳,班延鹏,宋银敏,周华从,智科端,何润霞,滕英跃,杨柯利..胜利褐煤焦钙催化水蒸气气化反应中活性微结构分析[J].燃料化学学报,2016,44(11):1297-1303,7.基金项目
The project was supported by the National Natural Science Foundation of China (21676149,21606134,21566029,21566028,21266017), Natural Science Foundation of Inner Mongolia (2014MS0220,2015BS0206,2016BS0204), Incentive Fund for the Scientific and Technology Innovation Program of Inner Mongolia and Major Basic Research Open Programs of Inner Mongolia.国家自然科学基金(21676149,21606134,21566029,21566028,21266017),内蒙古自然科学基金(2014MS0220,2015BS0206,2016BS0204),内蒙古科技引导奖励基金和内蒙古自治区重大基础研究开放课题资助 （21676149,21606134,21566029,21566028,21266017）
