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Tesis sobre el tema "Esterification"

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Publicado: 4 de junio de 2021
Última modificación: 25 de julio de 2025

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1

Sindelar, Pavel J. "Hepatic lipase and dolichol esterification /." Stockholm, 1997. http://diss.kib.ki.se/1997/91-628-2772-3.

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2

Al-Seeni, Madeha N. "Control of hepatic cholesterol esterification." Thesis, University of Nottingham, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293154.

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3

Hatcher, Stuart Dominic. "Tin promoted lactonisation and esterification reactions." Thesis, King's College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391799.

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4

Lindmark-Henriksson, Marica. "Biotransformations of Turpentine Constituents : Oxygenation and Esterification." Doctoral thesis, KTH, Chemistry, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3529.

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<p>This thesis describes methods to obtain value–addedcompounds from TMP-turpentine obtained from the spruce, Piceaabies. The methodology focuses on biotransformations using twoapproaches: an oxygenation approach (i.e. oxygenation ofterpene hydrocarbons by cell cultures) and an esterificationapproach (i.e. lipase-catalysed transesterification of vinylacetate with terpene alcohols, and a further fractionation ofthe TMP-turpentine).</p><p>The main constituents of the turpentine, a-pinene, b-pineneand limonene, were subjected to a P. abies suspension culture.Allylic oxidation formed the major pro
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5

Bankole, Kehinde Seun. "Uncatalyzed esterification of biomass-derived carboxylic acids." Diss., University of Iowa, 2011. https://ir.uiowa.edu/etd/922.

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To shift from a petroleum-based to a biomass-based economy will require the development not only of biofuels, but also of biorenewable replacements for petroleum-derived chemicals. In this regard, environmentally friendly biomass-derived esters may serve as alternatives to fossil-derived chemicals such as toxic halogenated solvents and glycol ethers. Therefore, esterification of various carboxylic acids that find significant applications in the chemical, pharmaceutical, petrochemical, food, and cosmetic industries has been initiated by the chemical industry. At atmospheric condition, esterific
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6

MAININI, FRANCESCA. "ESTERIFICATION OF NATURAL COMPOUNDS WITH FATTY ACIDS." Doctoral thesis, Università degli Studi di Milano, 2012. http://hdl.handle.net/2434/170495.

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In this PhD project we dealt with β-sitosterol, resveratrol and quercetin, three natural substances featuring ascertained biological activities. These compounds are characterized by a limited bioavailability and a low stability: these features reduce their application in pharmaceutical, nutraceutical and dermocosmetic areas. In order to improve the above mentioned properties, we synthesized esters of these compounds, following either a chemical approach (resveratrol, quercetin, and β-sitosterol) and a enzymatic approach (resveratrol and β-sitosterol). The esterification was performed with satu
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7

Lee, Sun Min. "Studies of the Mechanism of Plasma Cholesterol Esterification in Aged Rats." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc331051/.

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The study was performed to determine factors influencing the esteriflcation of plasma cholesterol in young and aged rats. The distribution of LCAT activity was determined following gel nitration chromatography and ultracentrifugation of whole plasma respectively. When rat plasma was fractionated on a Bio-Gel A-5 Mcolumn, LCAT activity was found to be associated with the HDL fraction. A similar result was observed upon 24 hr density gradient ultracentrifugation of the plasma. However, following prolonged 40 hr preparative ultracentrifugation, the majority of the LCAT activity was displaced into
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8

Matsumura, Hiroyuki. "Efficient Utilization of Biomass through Esterification of Cellulosics." Kyoto University, 2003. http://hdl.handle.net/2433/148642.

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Kyoto University (京都大学)<br>0048<br>新制・課程博士<br>博士(エネルギー科学)<br>甲第10324号<br>エネ博第60号<br>新制||エネ||19(附属図書館)<br>UT51-2003-H745<br>京都大学大学院エネルギー科学研究科エネルギー社会・環境科学専攻<br>(主査)教授 坂 志朗, 教授 牧野 圭祐, 助教授 河本 晴雄<br>学位規則第4条第1項該当
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9

Dastjerdi, Zahra. "The Esterification of Naphthenic Acids for Methyl Ester Production." Thesis, University of Ottawa (Canada), 2010. http://hdl.handle.net/10393/28802.

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The remediation of tailings water, a by-product of bitumen extraction, is of utmost importance to the Athabasca oil sands industry due to its toxicity to aquatic environments. Naphthenic acids (NAs), natural components of bitumen, are the major contributor to the toxicity of tailings water. The use of algae for remediation of tailings water is a new approach to reduce the toxicity of tailings water. The combined extracted NAs and algal oils can potentially be used as a low cost feedstock for the production of biodiesel. In this study, the feasibility of using NAs for the production of biodiese
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10

Levesque-Tremblay, Gabriel. "Pectin methyl esterification functions in seed development and germination." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/46351.

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11

Lindmark, Johanna. "Evaluation of Esterification as a Valorization Route for Oxidized Lignin." Thesis, Luleå tekniska universitet, Industriell miljö- och processteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-66306.

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RISE Bioeconomy is working with the biorefinery concept. That is, for the company, to utilize all wood derivatives in effective processes, resulting in unique products. RISE Bioeconomy is investigating the possibilities of producing holocellulose through an oxidative delignification process of wood, using peracetic acid (PAA). The product, high-purity holocellulose, can be used for the production of for example cellulose nanofibers, a product that in recent years have increased in interest. The PAA-delignification process relies on oxidative treatment with peracetic acid, where the lignin is s
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12

Nguyen, Van Chuc. "Catalytic production and esterification of aqueous solution of lactic acid." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1136.

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Cette thèse porte sur la production d'acide lactique par conversion de la biomasse lignocellulosique catalysée par des acides de Lewis solides dans l'eau puis l'estérification d'acide lactique aqueux avec de l'éthanol. La conversion de la cellulose est étudiée en autoclave, en utilisant comme catalyseurs, de la zircone et de l'alumine contenant du W ou Sn (ZrW, AlSn) et différents hydroxydes métalliques. L'étude de la conversion de la cellulose en acide lactique en présence de ZrW non calcinée, ZrW calcinée, Zr(OH)4 et ZrO2, montre que la phase active du catalyseur est constituée de Zr4+, les
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13

Sergeant, Claire. "Esterification d'acides gras tissulaires par l'éthanol : influence des lipides alimentaires." Bordeaux 1, 1991. http://www.theses.fr/1991BOR10588.

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La consommation abusive d'alcool entraine des lesions hepatiques mais aussi cardiaques et cerebrales qu'on ne peut expliquer par le metabolisme oxydatif principal de l'ethanol. Pour mieux comprendre l'origine de ces atteintes extra-hepatiques, une voie secondaire de degradation de l'ethanol: l'esterification des acides gras tissulaires, a ete etudiee. Dans les serums de malades alcooliques, des ethyl esters d'acides gras ont ete mis en evidence. L'analyse de tissus: foie, cur, cerveau, d'animaux alcoolises par inhalation a permis de tester l'incidence de la composition lipidique du regime alim
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14

Phalak, C. A. "Reaction engineering studies in ion exchange resin catalyzed esterification reactions." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2004. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2877.

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15

Thompson, Judith U. S. "Investigation of pervaporation enhanced enzymatic esterification of geraniol to geranyl acetate." Thesis, Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/10140.

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16

Porter, Altic Lucas Eli. "Characterization of the Esterification Reaction in High Free Fatty Acid Oils." Scholar Commons, 2010. http://scholarcommons.usf.edu/etd/3582.

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Energy and vegetable oil prices have caused many biodiesel producers to turn to waste cooking oils as feedstocks. These oils contain high levels of free fatty acids (FFAs) which make them difficult or impossible to convert to biodiesel by conventional production methods. Esterification is required for ultra-high FFA feedstocks such as Brown Grease. In addition, ultrasonic irradiation has the potential to improve the kinetics of the esterification reaction. 2-level, multi-factor DOE experiments were conducted to characterize the esterification reaction in ultra-high FFA oils as well as determin
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17

Mazza, Mathieu. "Modification chimique de la cellulose en milieu liquide ionique et CO2 supercritique." Phd thesis, Toulouse, INPT, 2009. http://oatao.univ-toulouse.fr/7832/1/mazza.pdf.

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L'estérification de la cellulose a été réalisée dans deux milieux non-conventionnels. D'un coté, Le CO2 supercritique a permis l'obtention d'esters de cellulose à très faible degré de substitution (DS) en milieu hétérogène. D'un autre coté, les liquides ioniques utilisés ont permis de réaliser l'estérification de la cellulose en milieu homogène et d'obtenir des composés avec un large choix de DS. Parmi ces liquides ioniques, le BMIMCl a conduit à la formation d'ester gras de cellulose à faible DS et avec un caractère thermoplastique innovant. Le deuxième liquide ionique utilisé, découvert grâc
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18

Pabai, Franknel Sandi Kouvea. "Production, purification, characterization of selected microbial lipases and their application for interesterification of butter fat." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0005/NQ30354.pdf.

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19

Safari, Mohammad. "Interesterification of butter fat by commercial microbial lipases in organic solvent media." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41762.

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The interesterification yield (IY) and changes in fatty acid positional distribution of selected butter fat triacylglycerols were investigated, using a wide range of commercial microbial lipases and organic solvent media. The interesterification of butter fat by lipase from Mucor miehei was carried out in hexane, hexane-chloroform, and hexane-ethyl acetate; the results showed that the addition of 30% of either chloroform or ethyl acetate to the hexane resulted in a 23% increase in the IY. The interesterification of butter fat in a microemulsion co-surfactant system, containing Brij 35 as surfa
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20

Wilson, Diane Lilias. "Lipoprotein oxidation and the cholesterol esterification in a human monocytic cell line." Thesis, University College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309473.

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21

Teo, Hue Tat Ronnie. "Recovery of dilute acetic acid through esterification in a reactive distillation column." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/24561.

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With ever-growing environmental concerns, petrochemical and fine chemical industries face an omnipresent issue in recovering acetic acid from its aqueous solutions. The recovery of acetic acid through the esterification process is a very viable option. However, esterification reactions are typically restricted by equilibrium limitations, and face challenges with product purification. Reactive distillation is an emerging technology that has an extremely attractive potential as a process alternative for carrying out equilibrium limited chemical reactions. Although the reactive distillation proce
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22

Sattenapally, Narsimha. "SYNTHESIS AND DEVELOPMENT OF SILICON ANALOG OF FLUORESCEIN FLUOROPHORES AND ESTERIFICATION CATALYSTS." OpenSIUC, 2012. https://opensiuc.lib.siu.edu/dissertations/588.

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The synthesis and development of new materials and the improvement of the existing materials are a continuous quest for scientists. There is a constant need for new materials that have more advantages over the existing ones. The research to develop new materials can be appreciated in high magnitude, as the new materials improve the livelihood. In this dissertation, we are presenting our progress in developing new materials, such as fluorescence fluorophores as probes, and esterification catalysts. In the first part of the dissertation, the synthesis and characterization of a novel silico
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23

Tibbits, C. William. "Studies on the pectin network of the tomato fruit cell wall." Thesis, University of East Anglia, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327392.

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24

Camp, David. "Some Aspects of the Mitsunobu Reaction." Thesis, Griffith University, 1990. http://hdl.handle.net/10072/366203.

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A 31P NMR based study of the Mitsunobu esterification reaction has been undertaken. Three intermediates have been identified: an alkoxytriphenyiphosphonium carboxylate, a dialkoxytriphenyiphosphorane and an (acyloxy)alkoxytriphenylphosphorane. These three species are in equilibrium with each other, the position of the various equilibria depending on the polarity of the solvent, pKa of the acid and structure of the alcohol. Given the choice between a primary and secondary alcohol, only the phosphorane and oxyphosphonium salt corresponding to the primary alcohol are observed. The implications of
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25

Chacon, Micaela. "Esterification as a strategy for the detoxification of value compounds in Escherichia coli." Thesis, University of Bath, 2017. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.760939.

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The use of microbial platforms for the production of commercially valuable compounds has grown over the last few decades as concern over the sustainability of other production methods, such as extraction and chemical synthesis, has been come into question. Advancements in the understanding of microbial metabolism and regulation with the aid of -omics research, and a steady increase in the number of available genetic tools, has allowed model organisms such as the bacteria Escherichia coli and the yeast Saccharomyces cerevisiae to be engineered for high titre production of a number of value prod
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26

Gumaste, V. K. "Application of zeolite catalysts in esterification, ritter reaction and alkylation of aromatic substrates." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1995. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2798.

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27

富洵 and Xun Fu. "Lipase selectivity in reactions involving natural and synthetic fatty acids and fatty alcohols." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B3124015X.

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28

Venzon, Simoni Spohr. "Physical and chemical properties and antioxidant activity of modified and unmodified pectins extracted from orange bagasse." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/1130.

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Modified pectin is a polysaccharide rich in galacturonic acid altered by pH adjustment and thermal treatment used especially as an anti-cancer agent. The aim of this work was to study the physical and chemical properties of modified and unmodified pectins extracted from orange bagasse by using citric and nitric acids. The galacturonic acid content, degree of esterification, Fourier Transform Infrared 30 Spectroscopy profile, molar mass, intrinsic viscosity, rheological properties and antioxidant activity of the pectins were evaluated. The modification process caused the de-esterification of pe
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29

Chiu, Li-Chun, and 邱麗君. "Protease catalyzed esterification." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/73099123030276174106.

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30

葉遠平. "Development of Esterification Catalyst." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/00798097574843762539.

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碩士<br>國立中正大學<br>化學工程研究所<br>89<br>Abstract In early study, we found that ethyl-acetate can be formed directly from water-containing ethonal(5%H2O) with Pd/SDB (Styrene divinyl benzene compolymer) catalyst. However, because of the low affinity between metal clusters and hydrophobic support, the catalyst deactivated rapidly by the extraction of Pd(CH3COO)2, which is formed from the reaction of palladium with acetic acid, a byproduct and intermediate of the reaction. Since the water adsorption can greatly be decreased by hydrophobic catalyst, combined Amberlyst 35 with Pd/SDB
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31

Watkins, Jacinta. "Understanding carotenoid esterification in cereals." Phd thesis, 2019. http://hdl.handle.net/1885/186942.

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Carotenoids are important micro-nutrients for humans present in fruits, vegetables and certain grains including bread wheat (Triticum aestivum). Several carotenoids including beta-carotene and beta-cryptoxanthin provide provitamin A activity, whilst xanthophylls, including lutein and zeaxanthin, are essential for ocular and brain development, maintenance of cognitive function in elderly, as well as important for the prevention of a range of degenerative diseases including age-related macular degeneration. The health benefits provided by carotenoids makes them key targets regarding biofortifica
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32

Wang, Chih-Kai, and 王致凱. "Catalyst studies for lactic acid esterification." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/86525377724504873100.

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碩士<br>東海大學<br>化學工程與材料工程學系<br>99<br>Esters of lactic acid are non-toxic、soluble、non-volatile and have fruit flavor. It is also biodegradable and have wide applications, particularly as regulations and consumer preferences increase the demand for “green” chemicals. They are ideal green solvents which are used as the cleaning agents for the circuit board and electronic raw material. In addition, butyl lactate and esterification of lactic acid with other alcohol are solvents for paint and plastics. Esters of lactic acid also can be used to produce natural resins、 paints、printing inks, dry lotion,
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33

Chang, Min-Chung, and 陳明志. "Enzymatic Esterification Reactions at High Pressure." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/13495379490107883252.

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34

邱明豐. "Characterization of Esterification/Partial Oxidation Bifunctional Catalysts." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/92536795845251315872.

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碩士<br>國立中正大學<br>化學工程研究所<br>89<br>Catalyzed by styrene-divinyl benzene copolymer (SDB)-supported Pd (Pd/SDB) catalysts, ethyl acetate can be formed from water-containing ethanol via concomitant partial oxidation and esterification reaction. The partial oxidation reaction is carried out over palladium clusters on the catalysts. The esterification reaction is catalyzed by protons formed from the spontaneous dissociation of acetic acid and can be enhanced by addition solid acid catalysts. After the reaction, there is no evidence of palladium oxide formation suggesting that the oxidation reactio
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35

LIN, ZONG-YING, and 林宗穎. "Optimal Design of Mixed Acid Esterification System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/10087402492357933435.

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碩士<br>東海大學<br>化學工程與材料工程學系<br>104<br>Reduced equipment costs and increased conversions are notable features of reactive distillation processes. On the other hand, dividing-wall distillation units can not only reduce equipment costs, but also save energy. In the context, this study explores the design and optimization of a reactive distillation system involving the esterification of mixed acids with methanol. The main purpose of the process is to produce 98 wt% methyl acetate and 99 mole% methyl propionate, and to remove wastewater at the same time. A conventional reactive distillation process i
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36

chieh, chang chen, and 張朕杰. "study on the catalytic esterification of cellulose." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/81462286830530247078.

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碩士<br>南台科技大學<br>化學工程與材枓工程系<br>98<br>In this study, the cotton as the raw material compound was synthesized by the esterification to cellulose acetate, and we investigated the reaction time, reaction temperature, catalyst volume, catalyst type on the degree of acetylation, degree of substitution, and molecular weight. The result was analyzed by fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance spectroscopy (NMR) for structural identification of cellulose acetate and the chemical titration method and gel penetration chromatography (GPC) for studying the degree of sub
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37

Tadevosyan, Arevik. "Biodiesel production through ionic liquid catalysed esterification." Master's thesis, 2017. http://hdl.handle.net/10198/14667.

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Biodiesel is an alternative fuel diesel that can be produced from vegetable oils and animal fats. There is a recent growing interest in the development of alternative technologies to the oil economy, based on renewable energy sources. A possible solution is a biofuel usable in compression-ignition engines, produced from biomass rich in fats and oils. A wide range of raw materials can be used in the production of biodiesel. Nevertheless, the use of sources that do not compete with the food market like waste cooking oils, which usually feature high levels of free fatty acids (FFA’s), can put pro
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38

Tsai, Ruei-Chiang, and 蔡瑞強. "Side-Reactor Configuration for Acetic Acid Esterification." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/23981994876849362955.

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碩士<br>臺灣大學<br>化學工程學研究所<br>95<br>Reactive distillation (RD) combines reaction and separation in a single unit to reduce energy consumption and capital investment. Despite of potential advantages, the reactive distillation may suffer from maintenance/design problems such as catalyst deactivation/replacement and hardware design (for catalyst packing), especially for heterogeneous catalyst such as ion exchange resin. In this work, an alternative design, side reactor configuration, is sought and the processes of interest are the production of the ethyl acetate (EtAc) and the butyl acetate (BuAc) vi
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39

Yang, Yung-Ching, and 楊永慶. "Synthesis of Monostearin via Lipase-catalyzed Esterification." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/47186518242228902478.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>90<br>Monoglyceride (MG) is one type of derivative of acylglycerol, in which one of the hydroxyl group of glycerol is esterified with fatty acid. MGs are most widely used as additives and emulsifiers in the food, cosmetic and pharmaceutical products. The conventional chemical methods to produce MG in industry are usually carried out at higher temperatures (220-250℃) under nitrogen atmosphere by employing inorganic alkaline catalysts. The major disadvantages of these processes are: it needs high energy, it produces several undesirable by products and also the quality
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40

Lin, Hsin-Mei, and 林欣玫. "Biodiesel Synthesis by Esterification/ Transesterification Using Solid Catalysts." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/74667175189579132886.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>100<br>Biodiesel is an alternative fuel for traditional fossil fuel. It can be produced by transesterification from triglyceride. In this study, we use solid catalysts to catalyze esterification and transesterification in order to solve the problems of free fatty acid (FFA) in the feedstock oil. The first method：Both esterification and transesterification were catalyzed simultaneously by solid acid catalyst. In experiment, we used commercial lard as feedstock oil, and SZA (Sulfated Zirconia Alumina) solid acid catalyst to catalyze both reactions. We studied differen
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41

Chou, Fang Ru, and 周芳如. "Nanolization of Layered Compounds as Catalysts in Esterification." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/09832193945882777036.

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碩士<br>國立暨南國際大學<br>應用化學系<br>103<br>The present study is an attempt to generate a new way for the synthesis of two dimensional nanosheets which has a higher specific surface area and better catalytic properties. The synthesis was carried out in two steps, intercalation of the layered materials with organic entities followed by exfoliation in various nonpolar solvents. The layered oxide materials HNbWO6 • 1.5H2O and HTaWO6 • 1.5H2O were utilized as the precursors for the synthesis of nanosheets. The organic compounds- ortho-phenylenediamine, hexadecylamine and melamine were intercalated into the
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42

Tsai, Hsin-Chuan, and 蔡幸娟. "Reaction Condition Study on Trans-esterification of Soybean." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05686255900138339451.

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碩士<br>國立臺中教育大學<br>科學應用與推廣學系科學教育碩士班<br>100<br>Biodiesel is composed from raw vegetable oil or animal fat. As a biofuel either pure or mixed with fossil fuels, it is a potential clean form of energy. It is biodegradable, non-toxic, and generates less pollution after combustion than fossil fuels. Solid basic catalysts CaO, Ca(OH)2, and Ca(NO3)2 are used for the transesterification of soybean oil and methanol. A three-factor, three-level orthogonal experiment is conducted to analyze the efficiency of transesterification among the catalyst types, calcined temperature, and catalyst quantity. Cal
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陳光興. "Studies on the Esterification by Using Immobilizd Lipase." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/40779274724348652311.

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碩士<br>東吳大學<br>微生物學系<br>86<br>Four different commercial lipases of Pseudomonas spp (PS-P), Candida rugosa (CR-P), Mucor javanicus (MJ-P) and Rhizopus arrhizus (,RA-P) have been immobilized by adsorption with celite (PS-A, CR-A, MJ-A, RA-A) and by entrappment with hydrophobic silane (PS-E, CR-E, MJ-E, RA-A). The conversion rate of capronic acid and ethanol to ethyl caproate of thase free and immobilized lipase in organic solvent n-hexane, in aqueous alcohol solution, and in the supercritical fluid of carbon dioxide system have been measured and compared in this study. 　The free PS lipase (PS-P
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Chen, Tzu-Ming, and 陳子明. "Pervaporation assisted pre-esterification in a biodiesel process." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/4fzb6f.

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碩士<br>國立臺灣大學<br>化學工程學研究所<br>105<br>Nowadays, our life is intimately linked with fossil fuels. With more and more concerns about oil shortage and environmental issues, seeking for alternative energy turns out to be crucial. Biodiesel is a kind of general biofuel, and it is clean, renewable and has combustion properties like petroleum-based diesel. In order to overcome the saponification and hydrolysis problems of producing biodiesel by using alkaline catalysts which is usually caused by free fatty acid (FFA) contained in raw oil. A two-step method, pre-esterification followed by transesteri
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45

Lin, Li-Jie, and 林立杰. "Kinetic Behavior Study on the Heterogeneous Esterification of." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/ggd5js.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>106<br>The heterogeneous kinetics behavior was investigated with a batch reactor for the synthesis of linolenic acid n-butyl ester from linolenic acid and n-butanol over the cation-exchange resins, Amberlyat 39. The experiments were conducted at tempertures from 343.15 K to 363.15 K. Additionally, the effects of molar ratio of alcohol to acid in the feed stream, the mass transfer resistances on the catalytic reaction, and the different levels of catalyst loadings were also observed. Both reaction rate and equilibrium conversion of acid increased with increase of reac
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Liu, Wen-Tzong, and 劉文宗. "Esterification synthesis of n-butyl propionate by reactive distillation." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/29448513497004518347.

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博士<br>國立清華大學<br>化學工程學系<br>90<br>The objective of this study was to investigate the reactive distillation technique, a promising technology combining distillation and reaction in one column in order to reduce capital and operating cost, using the esterification of n-butyl propionate from propionic acid and n-butanol as the model system. The research contents included investigation of chemical equilibrium between each pair in product mixtures and screening of catalysts among the commercial solid acids like acidic exchange resins. A 50 mm column was used to carry out the cat
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Chang, Wei-Lin, and 張濰麟. "Preparation of Hydrophobic Catalysts and Application of Esterification Reaction." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/z24422.

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碩士<br>國立中正大學<br>化學工程研究所<br>103<br>The objective of this study is to prepare hydrophobic catalyst. The selection of granule type catalyst support is Pd/zeolite(CBV760-Pd). We deposited nickel nitrate solution as a nickel catalyst precursor on the catalyst supports by incipient wetness impregnation, nickel catalyst content of Pd/zeolite was 2.5 wt.%, and calcined the sample that had been removed the solvent by vacuum drying method under atmosphere at 450 ℃for 30 minutes in the box furnace. Then, grow CNT layer by CVD process after the catalyst precursor was calcined, which hydrogen acted as redu
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邱如吟. "Kinetics of heterogeneous esterification for production of butyl propionate." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/76023520659933253906.

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Alimova, Irana. "Production of biodiesel through esterification catalyzed by Ionic liquids." Master's thesis, 2016. http://hdl.handle.net/10198/13173.

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Biodiesel is an alternative diesel fuel that is produced from vegetable oils and animal fats. Currently, most biodiesel is made from oils, methanol, and an alkaline catalyst. Conventional catalysts is commonly used for catalyzing esterification of fatty acid to produce biodiesel. However, a better and greener method was found. An ionic liquid (IL) is a molten salt consisting of a cation and an anion, with low melting temperature. It offers a better solution than sulfuric acid, because it can be recycled and reused in subsequent runs after recovery steps. In this study, a Brønsted acidic IL, 1-
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Roman, Fernanda. "Biodiesel production through esterification applying ionic liquids as catalysts." Master's thesis, 2018. http://hdl.handle.net/10198/17892.

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Dupla diplomação com a Universidade Tecnológica Federal do Paraná<br>Biodiesel is a liquid fuel obtained from several renewable sources by transesterification reaction of triglycerides. Its development is related to a new tendency: the search for alternatives to petroleum-based energy sources. Its utilization is associated with several environmental benefits, such as a reduction in pollutants emissions. However, due to the high cost associated to its usual feedstock, such as edible vegetable oils, biodiesel is not economically viable. Therefore, there’s a requisite to decrease the final price
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