| Preparation of macroporous ceramic from metakaolinite-based geopolymer by calcination | |
| Department | 固体润滑国家重点实验室 |
Wang HL(王鸿灵)1 ; Li HH(李海红)2; Wang YX(王云霞)1; Yan FY(阎逢元)1; Wang HL(王鸿灵)
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| 2015 | |
| Source Publication | Ceramics International
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| ISSN | 0272-8842 |
| Volume | 41Issue:9Pages:11177-11183 |
| Abstract | Metakaolinite-based geopolymer was prepared using metakaolinite under activation of NaOH solution and sodium silicate solution. The geopolymer was calcined at 300 °C, 600 °C, 900 °C, 1200 °C and 1500 °C. IR, SEM and XRD were used to determine changes on composition, morphology and structure. It was found 900 °C was a key transition temperature. Calcined below 900 °C, the geopolymer did not show obvious structure change, although its bending strength was decreased. Calcined at 900 °C, the geopolymer began to melt partly and coagulate locally, and considerable interspaces existed and separated the partly melted geopolymer. When the calcining temperature was increased to 1200 °C, material with considerably high crystallinity came into being. XRD study indicated that main phase of the material was mullite. Increase of the calcining temperature between 900 °C and 1500 °C made the interspaces gradually shrink. When calcining temperature was increased to 1500 °C, these interspaces shrank into pores about 10 μm, thus resulted in the formation of one kind of macroporous mullite ceramic. Apparent density and flexural strength of the macroporous ceramic were 2.07–2.21 g/cm3 and 47.69–49.62 MPa, respectively, which were higher than those of the metakaolinite-based geopolymer. |
| Keyword | Calcination Macroporous Ceramic Geopolymer Metakaolinite Mullite |
| Subject Area | 材料科学与物理化学 |
| DOI | 10.1016/j.ceramint.2015.05.067 |
| Funding Organization | the National Natural Science Foundation of China (No. 51405478);the Natural Science Foundation of Gansu Province (No. 0803RJZA016);West Doctoral Financial Support Project of CAS |
| Indexed By | SCI |
| If | 2.605 |
| Language | 英语 |
| Funding Project | 功能防护材料组 |
| compositor | 第一作者单位 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/18558 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Wang HL(王鸿灵) |
| Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Peoples R China 2.Yantai Univ, Yantai 264005, Peoples R China |
| Recommended Citation GB/T 7714 | Wang HL,Li HH,Wang YX,et al. Preparation of macroporous ceramic from metakaolinite-based geopolymer by calcination[J]. Ceramics International,2015,41(9):11177-11183. |
| APA | Wang HL,Li HH,Wang YX,Yan FY,&王鸿灵.(2015).Preparation of macroporous ceramic from metakaolinite-based geopolymer by calcination.Ceramics International,41(9),11177-11183. |
| MLA | Wang HL,et al."Preparation of macroporous ceramic from metakaolinite-based geopolymer by calcination".Ceramics International 41.9(2015):11177-11183. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 201511177-11183.pdf（1428KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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