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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
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dc.contributor.advisor | 鄭淑芬(Soofin Cheng) | |
dc.contributor.author | Guo-Yang Huang | en |
dc.contributor.author | 黃國揚 | zh_TW |
dc.date.accessioned | 2021-05-20T21:39:33Z | - |
dc.date.available | 2015-08-20 | |
dc.date.available | 2021-05-20T21:39:33Z | - |
dc.date.copyright | 2010-08-20 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-08-13 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/10562 | - |
dc.description.abstract | 介孔洞材料SBA-15具有高的比表面積,以及均勻的六方角柱規則孔洞,加上有良好的水熱穩定性,使得其成為良好的觸媒載體。故將低表面積的鎢鋯氧化物負載於在SBA-15身上增加鎢鋯氧化物的比表面積。本實驗是利用超臨界乙醇共沉澱法將鎢鋯氧化物負載於SBA-15孔洞材料身上,利用超臨界流體的特性,讓鎢鋯氧化物的分散性達到更好,來探討甘油脫水得到丙烯醛反應的反應活性。探討利用不同的氧化鎢和氧化鋯以及SBA-15的三者比例、此複合材料的鍛燒溫度、以及酸量的多寡。利用超臨界乙醇共沉澱法製成的鎢鋯氧化物複合材料,在低角度的X光繞射實驗得知,複合材料保有原本的SBA-15規則六角柱狀排列。而且從氮氣吸脫附實驗可以得到高表面積的觸媒材料。相較於直接含浸法,所合成的觸媒材料的混和金屬氧化物顆粒會阻塞且填滿介孔洞SBA-15的孔道。合成出的觸媒應用在固定床氣相甘油的脫水反應,實驗得知丙烯醛 (acrolein) 為主要生成物,且有甘油脫一次水的產物丙酮醇(hydroxyacetone)與乙醛為其他副產物。 | zh_TW |
dc.description.abstract | Zirconia loaded with tungsten oxide (abbreviated as WZ) has been reported to be an efficient catalyst in dehydration of glycerol to form acrolein. In the present study, mesoporous SBA-15, which has very high surface area and a uniform hexagonal array of channel-shaped mesopores, was used as the support for preparing supported WZ catalyst (abbreviated as WZ/SBA-15) in order to increase the surface area of tungstated zirconia. Different methods for preparing the supported catalysts were compared. The catalysts prepared through supercritical ethanol were found to retain well ordered porous structure based on small angle X-ray diffraction. The acidities were examined by NH3-TPD and FT-IR, The gas-phase dehydration of glycerol in the presence of water was investigated at temperatures around 290 oC. Factors of catalyst preparation such as the weight ratios of tungsten and zirconium to SBA-15, the calcination temperature of the catalysts, and various silica supports in influencing the catalytic performances were examined. | en |
dc.description.provenance | Made available in DSpace on 2021-05-20T21:39:33Z (GMT). No. of bitstreams: 1 ntu-99-R97223170-1.pdf: 2942673 bytes, checksum: 910333576b7795e970189553250a36f1 (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | 第一章 序論 1
1-1 研究背景 1 1-2 界面活性劑微胞性質介孔材料的簡介 6 1-3 鎢鋯氧化物的研究與發展 11 1-4 超臨界流體 13 1-5 研究目的 16 第二章 實驗部分 17 2-1化學藥品 17 2-2觸媒的製備 19 2-2-1 鎢鋯氧化物製備 19 2-2-2 鎢鋯氧化物附載於SBA-15載體觸媒製備 19 2-3觸媒材料之鑑定 21 1. X光粉末繞射 ( Powder X-ray Diffraction, XRD ) 21 2. 氮氣吸附-脫附等溫曲線 ( N2 Adsorption-desorption Isotherm) 21 3. 穿透式電子顯微鏡 (Transmission Electron Microscopy, TEM) 23 4. 熱重分析 (Thermogravimetric Analysis, TGA) 24 2-4 催化反應 25 2-4-1 甘油氣相脫水反應 25 2-4-2 反應物及產物分析 28 第三章 結果與討論 31 3-1 鎢鋯氧化物觸媒的鑑定與催化反應 31 3-2 直接含浸法與超臨界乙醇共沉澱法的比較 35 3-2-1 鎢鋯氧化物附載於介孔洞SBA-15載體觸媒鑑定 35 3-2-2 催化反應 39 3-3 超臨界乙醇共沉澱合成鎢鋯氧化物附載於介孔洞SBA-15 42 3-3-1合成鍛燒溫度的探討 42 3-3-2 鎢鋯氧化物之間比例與介孔洞SBA-15的探討 49 3-3-3 Weight Hourly Space Velocity對反應的影響 58 3-3-4 氫氣對反應活性的探討 62 第四章 結論 64 參考文獻 65 | |
dc.language.iso | zh-TW | |
dc.title | SBA-15負載鎢鋯金屬氧化物對甘油的氣相脫水反應研究 | zh_TW |
dc.title | Gas-phase dehydration of glycerol over Supported W/Zr Mixed Oxides | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 牟中原,簡淑華 | |
dc.subject.keyword | SBA-15,鎢鋯氧化物,脫水反應,甘油,丙烯醛, | zh_TW |
dc.subject.keyword | WO3,ZrO2,SBA-15,dehydration,glycerol,acrolein, | en |
dc.relation.page | 67 | |
dc.rights.note | 同意授權(全球公開) | |
dc.date.accepted | 2010-08-15 | |
dc.contributor.author-college | 理學院 | zh_TW |
dc.contributor.author-dept | 化學研究所 | zh_TW |
顯示於系所單位: | 化學系 |
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