XRF and nitrogen adsorption of acid activated palygorskite
文献类型：期刊论文
| 作者 | Wang Q(汪琴) ; Wang AQ(王爱勤); Zhang JP(张俊平)
|
| 刊名 | Clay Minerals
 |
| 出版日期 | 2010 |
| 卷号 | 45期号:2页码:145-156 |
| 关键词 | Palygorskite micropore mesopore macropore acid activation X-ray fluorescence BET HCl H2SO4 H3PO4 |
| ISSN号 | 0009-8604 |
| 通讯作者 | 王爱勤 aqwang@licp.cas.cn |
| 中文摘要 | The effects of acid activation on the chemical composition, surface area and pore structure of palygorskite from Xuyi (Jiangsu, P.R. China) were investigated systematically using X-ray fluorescence (XRF) and BET techniques. The palygorskite samples were activated with HCl, H2SO4 and H3PO4 of various concentrations at 80ºC for 4 h. The influences of acid concentration and acid type on the chemical composition, adsorption-desorption isotherms at 77 K, pore-size distribution, surface area and pore volume were studied in detail. The contents of most components of palygorskite decrease with increasing acid concentration except for Si and Ti. HCl shows a greater activation activity and its effect on the dissolution of components of palygorskite is greater than that of H2SO4 and H3PO4. It was found that 3 mol l1 H3PO4 is a more efficient activator for increasing the number of micropores in palygorskite, whereas 12 mol l1 HCl is more suitable for use in enhancing the number of meso- and macropores. The acid concentration and acid type have a great influence on the surface area and pore volume. HCl is the most effective at enhancing the external surface area and mesopore volume of palygorskite, whereas, H3PO4 is more suitable for use in improving the micropore surface and volume. |
| 学科主题 | 矿物学 |
| 收录类别 | SCI |
| 资助信息 | 中科院西部行动项目(KGCX2-YW-501) |
| 语种 | 英语 |
| 公开日期 | 2012-09-02 |
| 源URL | [http://210.77.64.217/handle/362003/117]  |
| 专题 | 兰州化学物理研究所_环境材料与生态化学研究发展中心 |
| 推荐引用方式 GB/T 7714 | Wang Q,Wang AQ,Zhang JP. XRF and nitrogen adsorption of acid activated palygorskite[J]. Clay Minerals,2010,45(2):145-156. |
| APA | 汪琴,王爱勤,&张俊平.(2010).XRF and nitrogen adsorption of acid activated palygorskite.Clay Minerals,45(2),145-156. |
| MLA | 汪琴,et al."XRF and nitrogen adsorption of acid activated palygorskite".Clay Minerals 45.2(2010):145-156. |
入库方式： OAI收割
来源：兰州化学物理研究所
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