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| ???org.dspace.app.webui.jsptag.ItemTag.dcfield??? | Value | Language |
|---|---|---|
| dc.contributor.advisor | 林江珍(Jiang-Jen Lin) | |
| dc.contributor.author | Wen-Hsin Chang | en |
| dc.contributor.author | 張文馨 | zh_TW |
| dc.date.accessioned | 2021-06-08T07:31:37Z | - |
| dc.date.copyright | 2008-07-24 | |
| dc.date.issued | 2008 | |
| dc.date.submitted | 2008-06-24 | |
| dc.identifier.citation | (1) Smith, C. R. J. Am. Chem. Soc. 1934, 56, 1561-1563.
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| dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/26905 | - |
| dc.description.abstract | 利用有機黏土與鐵離子以共沈澱法製備磁性有機黏土複合材料，並探討氧化鐵粒子與有機黏土的機制及其在原油吸附上的應用。
一、將磁性氧化鐵粒子利用逐步插層法，插層於矽酸鹽層黏土中。鈉型蒙脫土經由一系列聚醚胺鹽插層改質（稱為有機黏土），可將層間距由12 Å最高提至91 Å。利用共沈澱法結合可在低溫下分散於水中的有機黏土及磁性氧化鐵，以製備有機黏土與磁性氧化鐵之複合材料，並探討磁性氧化鐵吸附或插層於有機黏土的機制。研究發現利用層間距最大之有機黏土D4000/MMT (91 Å)，因其較大的層間距可提供氧化鐵在黏土層間生成。由TEM觀察可知，氧化鐵粒子生成於黏土層間（層間距約47 Å）。 二、為了使此複合材料可作為磁性有機吸附劑，具有高的有機含量是必需的。D4000-MMT/Iron oxide複合材料由TGA測量得知，其有機含量可高達51 wt %，並可分散於甲苯中（1 wt %），進而將其應用於原油吸附。相對於複合材料的重量，最大原油吸附量可高達4倍，並維持其磁性，且氧化鐵含量僅17 wt %。 關鍵詞：磁性有機黏土、層狀矽酸鹽黏土、氧化鐵、原油、吸附、插層。 | zh_TW |
| dc.description.abstract | Magnetic and organic layered composite was prepared by the co-precipitation of organoclay with Fe(II)/Fe(Ⅲ) salts. Interaction mechanism of iron oxide particles into organoclay interlayer and their application for crude oil adsorption are studied.
Part Ⅰ: The iron oxide particles were intercalated into the layered silicate clay by stepwise intercalation. The sodium montmorillonite (Na+–MMT) was modified by a series of poly(oxyalkylene)-amine salts to yield a spatially-expanded silicates (named as Organoclay) from the original 12 Å up to 91 Å. Combining the low-temperature-dispersible Organoclay with the iron-oxide particles ultimately produced a series of organoclay/iron oxide composite by the co-precipitation method. Two different mechanisms of adsorption and intercalation were found. The use of D4000 intercalated MMT at high d spacing (91 Å) allowed the incorporation of iron-oxide in the organoclay interlayer. As a result, the composite of Fe3O4/D4000/clay at 47 Å d spacing were obtained and observed the iron-oxide particles existed in the clay gallery by TEM. Part Ⅱ: In order to prepare a magnetic composite with functions for absorbing organics, high organic content in the clay layers is prepared. The TGA data of D4000-MMT/iron oxide composite showed the organic fraction up to 51 wt % and consequently dispersible in toluene (1 wt %). When applied for oil adsorption, the result of adsorption capacity at 4-fold of crude oil weight absorbed by the composites (by weight) was achieved. Due to the presence of iron-oxide particles (ca. 17 wt %), the oil-adsorbed Organoclay still retained the magnetic property and the compounds were movable by an applied magnetic field. Keywords: magnetic organoclay, layered silicate, iron oxide, crude oil, adsorption, intercalation. | en |
| dc.description.provenance | Made available in DSpace on 2021-06-08T07:31:37Z (GMT). No. of bitstreams: 1 ntu-97-R95549008-1.pdf: 1450067 bytes, checksum: 21bab8e268d4524afeeaa0668c577996 (MD5) Previous issue date: 2008 | en |
| dc.description.tableofcontents | Contents
口試委員會審定書 i Acknowledgements ii 摘要 iii Abstract iv Chapter 1 Introduction 1 1.1 Organically Modified Layered Silicate (OLS) 1 1.2 Synthesis of Magnetite 3 1.3 The History of the Layered Silicate/Iron Oxide Composites 5 1.3.1 Preparation of the Layered Silicate/Iron Oxide Composites 5 1.3.2 Application of Magnetic Particles and Composites 7 Chapter 2 Experimental 9 2.1 Materials 9 2.1.1 Iron (II) Chloride Tetrahydrate (FeCl2 • 4H2O) 9 2.1.2 Iron (Ⅲ) Chloride Hexahydrate (FeCl3 • 6H2O) 9 2.1.3 Concentrated Ammonium Hydroxide (NH4OH) 9 2.1.4 Layered Silicates 9 2.1.5 Jeffamine® Poly(oxyalkylene)amines 10 2.2 Analytic Instruments 11 2.2.1 X-ray Diffractometry (XRD) 11 2.2.2 Thermal Gravimetric Analyzer (TGA) 12 2.2.3 Transmission Electron Microscopy (TEM) 12 2.3 Experimental Procedures 12 2.3.1 Intercalation of Montmorillonite by Jeffamine®amines 12 2.3.2 Synthesis of Pure Iron Oxide 13 2.3.3 Preparation of the Organoclay/Iron Oxide (Magnetite, Fe3O4) Composites 13 2.3.4 Mixtures of Iron Ion Added Stepwise to ED2001-MMT Dispersion 14 2.3.5 Oil Adsorption Application of Organoclay/Iron oxide Composites 17 Chapter 3 Results and Discussion 18 3.1 Preparation and Characterization of Poly(oxyalkylene)amines Intercalated Montmorillonite 18 3.2 Preparation of Organoclay/Iron Oxide Composites by Using the Property of Low Critical Dispersion Temperature 19 3.3 Effect of Acidification on Organic Fraction of D2000-MMT/Iron Oxide Composites 20 3.4 Preparation of Magnetic High-Organic-Fraction Composites by Using D4000-MMT with Spatially-Expanded Basal Spacing 23 3.5 Analysis of XRD Diffraction Patterns and the Crowding-Out Effect of Iron Ion on Organoclay Composites, including D2000-MMT/Iron Oxide and ED2001-MMT/Iron Oxide 24 3.6 The Morphologies of ED2001-MMT/Iron Oxide and D2000-MMT/Iron Oxide by Transmission Electron Microscopy 27 3.7 Unique Performances of D4000-MMT/Iron Oxide Composites 30 3.8 Dispersability and Oil Adsorption Capacity of D4000-MMT and Its Composites 35 Chapter 4 Conclusion 37 References and Notes: 39 List of Tables Table 1.1 Basal Spacing and Properties of Na+–MMT Intercalated by POP– and POE–Diamines13 2 Table 1.2 Basal Spacing, Composition, and Solvophilicity of MMT Intercalated by Poly(oxyalkylene) Amines15 3 Table 1.3 The Iron Oxides16 4 Table 3.1 Basal Spacing and Properties of Na+－MMT Intercalated by POP－and POE－Amines 18 Table 3.2 Properties of D2000-MMT/Iron Oxide Composites Prepared by Method A and Method B 22 Table 3.3 Organic Fractions of D2000-MMT/Iron Oxide Composites Prepared by Method B and Method C 22 Table 3.4 Properties of D4000-MMT/Iron Oxide Composites 24 Table 3.5 Properties of ED2001-MMT/Iron Oxide Composites 25 Table 3.6 The Maximum Adsorption Capacity of Crude Oil on Organoclay and Organoclay/Iron Oxide Composites 36 List of Figures Figure 1.1 XRD Patterns of the Samples Z-Na+ (a), Z-Na+/Mag (b) and Z-Na+/CoFe (c) Including Insets Showing the Characteristic Reflection at 35.58 Due to the Presence of Magnetite and Co Ferrite Particles in the Corresponding Magnetic Composites 32 6 Figure 1.2 TEM Micrographs and Particle Size Distributions (% in number of particles) of Fe-Mont2 Composite (Left) and Fe-Lap2 Composite (Right) 34 7 Figure 2.1 Chemical Structures of Jeffamine® Poly(oxyalkylene)amines. 11 Figure 3.1 XRD Patterns of the Magnetite Prepared from the Conditions of (a) Room Temperature and (b) Low Temperature 20 Figure 3.2 X-ray Diffraction Patterns of (a) D2000-MMT/Iron Oxide and (b) ED2001-MMT/Iron Oxide Composites with a Weight Ratio of 83/17. Insets Show the Peaks at the Range of 2–10° 26 Figure 3.3 The Variation of d Spacing when Iron Ion Mixtures Added Stepwise to ED2001-MMT Dispersion 27 Figure 3.4 TEM Micrographs of (a) ED2001-MMT/Iron oxide (w/w = 50/50) and (b) D2000-MMT/Iron Oxide (w/w = 50/50) Composites. Arrow A: clay/organoclay; Arrow B: iron oxide particles 28 Figure 3.5 TEM Micrographs of (a) ED2001-MMT/Iron Oxide (w/w = 50/50) and (b) D2000-MMT/Iron oxide (w/w = 50/50) Composites 29 Figure 3.6 X-ray Diffraction Patterns of D4000-MMT/Iron Oxide Composites with a Weight Ratio: (a) 50/50, (b) 71/29, and (c) 83/17 31 Figure 3.7 TEM Micrographs of (a) D4000-MMT/Iron Oxide Composite (w/w = 83/17) (b) Magnified at 2.5 times 32 Figure 3.8 Photographs of 1 wt % Toluene Dispersions of D4000-MMT/Iron Oxide Composites with Weight Ratio: (a) 50/50, (b) 71/29, and (c) 83/17 35 Figure 3.9 Photographs of 4-fold the Weight of Crude Oil Adsorption of D4000-MMT/Iron Oxide Composites (w/w = 83/17). Place the Magnet Bar Next to the Complex (a) in the Begin and (b) in 15 min 36 | |
| dc.language.iso | en | |
| dc.subject | 氧化鐵 | zh_TW |
| dc.subject | 磁性有機黏土 | zh_TW |
| dc.subject | 層狀矽酸鹽黏土 | zh_TW |
| dc.subject | 原油 | zh_TW |
| dc.subject | 吸附 | zh_TW |
| dc.subject | 插層 | zh_TW |
| dc.subject | adsorption | en |
| dc.subject | iron oxide | en |
| dc.subject | crude oil | en |
| dc.subject | layered silicate | en |
| dc.subject | magnetic organoclay | en |
| dc.subject | intercalation | en |
| dc.title | 磁性奈米氧化鐵與層狀黏土之插層及吸附 | zh_TW |
| dc.title | Intercalation and Adsorption of Magnetic Iron Oxide Nanoparticles onto Layered Silicate Clays | en |
| dc.type | Thesis | |
| dc.date.schoolyear | 96-2 | |
| dc.description.degree | 碩士 | |
| dc.contributor.oralexamcommittee | 何國川(Kuo-Chuan Ho),謝國煌(Kuo-Huang Hsieh) | |
| dc.subject.keyword | 磁性有機黏土,層狀矽酸鹽黏土,氧化鐵,原油,吸附,插層, | zh_TW |
| dc.subject.keyword | magnetic organoclay,layered silicate,iron oxide,crude oil,adsorption,intercalation, | en |
| dc.relation.page | 42 | |
| dc.rights.note | 未授權 | |
| dc.date.accepted | 2008-06-24 | |
| dc.contributor.author-college | 工學院 | zh_TW |
| dc.contributor.author-dept | 高分子科學與工程學研究所 | zh_TW |
| Appears in Collections: | 高分子科學與工程學研究所 | |
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