Preparation of solid acid SO42-/SiO2-TiO2 and its catalytic activity for esterification
文献类型：期刊论文
| 作者 | Zhang Qi; Chang Jie; Wang Tiejun; Xu Ying |
| 刊名 | chinese journal of catalysis
 |
| 出版日期 | 2006-11-01 |
| 卷号 | 27期号:11页码:1033-1038 |
| 关键词 | sulfuric acid silica titania solid acid catalyst bio-oil acetic acid ethanol esterification |
| 英文摘要 | solid acid catalysts so42-/sio2-tio2 with different sio2/tio2 ratios and calcined at different temperatures were prepared by mechanical mixing and impregnation methods. the catalysts were used for esterification of ethanol and acetic acid. so42-/40 % sio2-tio2 prepared by mechanical mixing and calcination at 400 degrees c exhibited the highest activity, and the acetic acid conversion was nearly 100 % in partial reflux rectifying esterification and up to 84% in total reflux esterification, which was close to the chemical equilibrium composition. x-ray diffraction patterns indicated that sio2 inhibited the excessive formation of titanium oxide sulfate. the combination of tetragonal crystal anatase tio2, orthorhombic crystal titanium oxide sulfate, and cubic crystal titanium with high surface area sio2 ensured the high activity of the catalysts. infrared spectra showed that the addition of sio2 helped the formation of ti-o-si linkage which enhanced the strong bonding of so42- with the catalyst surface. the sulfate species bonded were in bidentately chelating and covalent sulfate structures. thermogravimetric-differential scanning calorimetry proved that so42- was hardly removed with the addition of sio2 and the temperature for transformation of anatase to rutile was lowered. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | pyrolysis ; oxide |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000242869300020 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/10254]  |
| 专题 | 中国科学院广州能源研究所 |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Univ Sci & Technol China, Dept Thermal Sci & Energy Engn, Hefei 230027, Anhui, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Qi,Chang Jie,Wang Tiejun,et al. Preparation of solid acid SO42-/SiO2-TiO2 and its catalytic activity for esterification[J]. chinese journal of catalysis,2006,27(11):1033-1038. |
| APA | Zhang Qi,Chang Jie,Wang Tiejun,&Xu Ying.(2006).Preparation of solid acid SO42-/SiO2-TiO2 and its catalytic activity for esterification.chinese journal of catalysis,27(11),1033-1038. |
| MLA | Zhang Qi,et al."Preparation of solid acid SO42-/SiO2-TiO2 and its catalytic activity for esterification".chinese journal of catalysis 27.11(2006):1033-1038. |
入库方式： OAI收割
来源：广州能源研究所
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