| XRF and nitrogen adsorption of acid activated palygorskite | |
| Department | 环境材料与生态化学研究发展中心 |
Zhang JP(张俊平) ; Wang Q(汪琴); Chen H(陈浩); Wang AQ(王爱勤); 王爱勤 aqwang@licp.cas.cn
| |
| 2010 | |
| Source Publication | Clay Minerals
 |
| ISSN | 0009-8604 |
| Volume | 45Issue:2Pages:145-156 |
| Abstract | 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. |
| Keyword | Palygorskite Micropore Mesopore Macropore Acid Activation X-ray Fluorescence Bet Hcl H2so4 H3po4 |
| Subject Area | 矿物学 |
| Funding Organization | 中科院西部行动项目(KGCX2-YW-501) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 功能复合材料组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/117 |
| Collection | 环境材料与生态化学研究发展中心 |
| Corresponding Author | 王爱勤 aqwang@licp.cas.cn |
| Recommended Citation GB/T 7714 | Zhang JP,Wang Q,Chen H,et al. XRF and nitrogen adsorption of acid activated palygorskite[J]. Clay Minerals,2010,45(2):145-156. |
| APA | 张俊平,汪琴,陈浩,王爱勤,&王爱勤 aqwang@licp.cas.cn.(2010).XRF and nitrogen adsorption of acid activated palygorskite.Clay Minerals,45(2),145-156. |
| MLA | 张俊平,et al."XRF and nitrogen adsorption of acid activated palygorskite".Clay Minerals 45.2(2010):145-156. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 2010452145156.pdf（2017KB） | 开放获取 | License | View Application Full Text | |||
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