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| 脉冲反应和TPD技术研究煤焦的CO2气化行为 | |
| 引用本文： | 徐秀峰 朱珍平. 脉冲反应和TPD技术研究煤焦的CO2气化行为[J]. 洁净煤技术, 1997, 3(4): 23-25 |
| 作者姓名： | 徐秀峰 朱珍平 |
| 作者单位： | 中国科学院山西煤炭化学研究所煤转化国家重点实验室 |
| 基金项目： | 国家自然科学基金,北京中关村地区联合分析测试中心基金 |
| 摘 要： | 用脉冲反应和ＴＰＤ技术研究了铁催化煤焦－ＣＯ２气化行为，考察了铁负载量、催化剂前躯体、复合金属催化剂对催化活性的影响。并用Ｘ－射线光电子能谱（ＸＰＳ）表面分析技术测定了煤焦中的铁原子的表面浓度。研究结果表明，催化剂前躯体为Ｆｅ（ＮＯ３）３是活性最高，ＦｅＳＯ４次之，ＦｅＣｌ３最小，这些影响因素主要表现在煤焦中铁的表面浓度和催化剂存在形态２个方面。ＴＰＤ技术考察了气化反应过程中，煤焦表面生成的炭氧络 |
| 关 键 词： | 脉冲反应 TPD技术 煤焦 二氧化碳 气化行为 |
CO2-PULSED GASIFICATION AND TEMPERATURE-PROGRAMMEDDESORPTION OF IRON-LOADED COAL CHAR |
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| Xu Xiufeng Zhu Zhenping Gu Yongda Chen Songying. CO2-PULSED GASIFICATION AND TEMPERATURE-PROGRAMMEDDESORPTION OF IRON-LOADED COAL CHAR[J]. Clean Coal Technology, 1997, 3(4): 23-25 | |
| Authors: | Xu Xiufeng Zhu Zhenping Gu Yongda Chen Songying |
| Abstract: | CO2-pulsed gasification sndd temperature-programmed desorption(TPD) ex- periments of Xianfeng lignite char loaded with iron salts were carried out . The effect of iron loadings , catalyst precursors and binary catalyst on catalytic activity was studied. X-ray pho- toelectron spectroscopy (XPS) was used to measure the surface concentration of iron on chars The results show the catalytic activity of Fe (NO3)3 is highest among three different precur- sors, then that of FeSO4 is higher than FeCl3. The influencing factors lied in surface concen- tration and chemical forms of iron. From TPD studies , surface oxygen complexes (SOC) formed during gasification process were varified. |
| Keywords: | char CO2-pulsed gasification TPD technique |
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