Log in

Relevant bibliographies by topics / Butanoic acid / Dissertations / Theses

To see the other types of publications on this topic, follow the link: Butanoic acid.

Dissertations / Theses on the topic 'Butanoic acid'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 37 dissertations / theses for your research on the topic 'Butanoic acid.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Zhang, Hui. "Design and synthesis of novel prodrugs to modulate GABA receptors in cancer." Thesis, Edinburgh Napier University, 2017. http://researchrepository.napier.ac.uk/Output/978678.

Full text

Abstract:

GABA (gamma-amino butanoic acid) is the main inhibitory neurotransmitter in the mammalian central nervous system. GABA has been found to play an inhibitory role in some cancers, including colon carcinoma, cholangiocarcinoma, and lung adenocarcinoma. Growing evidence shows that GABAB receptors are involved in tumour development. The expression level of GABAB receptors was found to be upregulated in some human tumours, including the pancreas, and cancer cell lines, suggesting that GABAB receptors may be potential targets for cancer therapy and diagnosis. In this research programme, several diver

APA, Harvard, Vancouver, ISO, and other styles

2

Copelin, Jacob E. "Effects of supplemental 2-hydroxy-(4-methylthio) butanoic acid and branched chain volatile fatty acids in lactating dairy cows." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu157487131308709.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Noftsger, Susan M. "Nutritional strategies to improve nitrogen efficiency and reduce nitrogen excretion of lactating dairy cows." Connect to this title online, 2003. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1070372167.

Full text

Abstract:

Thesis (Ph. D.)--Ohio State University, 2003.<br>Title from first page of PDF file. Document formatted into pages; contains xiv, 144 p.; also includes graphics (some col.) Includes bibliographical references (p. 129-144).

APA, Harvard, Vancouver, ISO, and other styles

4

Livingston, Margaret. "ROOT DEVELOPMENT OF STEM CUTTINGS IN SELECTED PLANT SPECIES AS INFLUENCED BY BORON, CALCIUM, AND 1H-INDOLE-BUTANOIC ACID (IBA)." Thesis, The University of Arizona, 1985. http://hdl.handle.net/10150/275290.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Fowler, Colleen Marie. "Evaluation of 2-Hydroxy-4-(methylthio) Butanoic Acid Isopropyl Ester and Methionine Supplementation on Efficiency of Microbial Protein Synthesis and Rumen Bacterial Populations." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1248875016.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Klucinec, Eliane Carina. "Exigência nutricional e bioeficácia de metionina + cistina digestível em pintos de corte." Universidade Estadual do Oeste do Paraná, 2013. http://tede.unioeste.br:8080/tede/handle/tede/1539.

Full text

Abstract:

Made available in DSpace on 2017-07-10T17:47:55Z (GMT). No. of bitstreams: 1 Eliane_Carina_Klucinec.pdf: 1429928 bytes, checksum: 3369c8782239fbb484229fb5f23cda39 (MD5) Previous issue date: 2013-07-31<br>The aim of this study was to evaluate the bioavailability and nutritional requirement of methionine and cystine (met + cys) in broiler chicks from 1 to 21 days of age. To determine the nutritional requirement 750 broiler chicks were distributed in a completely randomized design with five increasing levels of met + cys (0.710%, 0.780%, 0.820%, 0.880% and 0.940%). To determine the bioavailab

APA, Harvard, Vancouver, ISO, and other styles

7

Sangali, Cleiton Pagliari. "Bioeficácia de fontes alternativas de metionina em relação à DL-metionina em frangos de corte (Cobb 500)." Universidade Estadual do Oeste do Paraná, 2012. http://tede.unioeste.br:8080/tede/handle/tede/1640.

Full text

Abstract:

Made available in DSpace on 2017-07-10T17:48:29Z (GMT). No. of bitstreams: 1 Cleiton_Pagliari_Sangali.PDF: 810970 bytes, checksum: 721cfbdc17482672e30e45378a255317 (MD5) Previous issue date: 2012-06-14<br>Fundação Araucária<br>Aiming to assess the relative bioefficacy of DL-2-hydroxy-4-methylthio butanoic acid (DL-HMBA) and of poly-herbal ingredient (PHI) relative to DL-methionine (DLM) in broilers, two experiments were conducted. In the first experiment, 1100 Cobb 500 males and females broilers were fed either, from 1 to 21 days of age with a methionine-deficient basal diet, or the basal

APA, Harvard, Vancouver, ISO, and other styles

8

Demolis, Alexandre. "Synthèse catalytique de lévulinates de butyle à partir de biomasse en présence d’alcools ou d’oléfines." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSE1180/document.

Full text

Abstract:

L'objectif de ce travail était d'étudier en profondeur la synthèse catalytique de lévulinates de butyle à partir de biomasse, d'abord en utilisant les isomères de butanol, puis les isomères de butène comme agents d'estérification. Généralement obtenus par estérification de l'acide lévulinique, les esters lévuliniques et notamment les lévulinates de butyle présentent des propriétés physiques et chimiques faisant d'eux de potentiels additifs de carburant, molécules plateformes, solvants ou encore additifs pour l'industrie alimentaire ou pharmaceutique. En convertissant sélectivement la cellulose

APA, Harvard, Vancouver, ISO, and other styles

9

Lopez, Muñoz Laura Alicia. "Medidas do equilibrio liquido - vapor dos sistemas butanol - acido burico e butanol - acido acetico as pressões de 200 e 400 mmHg." [s.n.], 1999. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267361.

Full text

Abstract:

Orientador: Maria Alvina Krahenbuhl<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Quimica<br>Made available in DSpace on 2018-07-25T16:32:43Z (GMT). No. of bitstreams: 1 LopezMunoz_LauraAlicia_M.pdf: 2311093 bytes, checksum: 2b4ab867e0a31b54e9ac583e8cf2da5d (MD5) Previous issue date: 1999<br>Resumo: Este trabalho de pesquisa apresenta contribuições para o equilíbrio líquido ¿ vapor (ELV) dos sistemas binários butanol ¿ácido butírico e butanol ¿ ácido acético. Dados isobáricos P-T-x-y de ELV foram medidos em duas faixas de pressão, 200 e 400 mmHg. O eq

APA, Harvard, Vancouver, ISO, and other styles

10

Sedjame, Henri-Joël. "Élaboration de matériaux catalytiques pour l'élimination de polluants organiques en phase gaz." Thesis, Poitiers, 2013. http://www.theses.fr/2013POIT2283/document.

Full text

Abstract:

Les travaux dont les résultats sont présentés dans ce manuscrit ont été menés dans le but de préparer des matériaux catalytiques à base de métaux nobles pour l'élimination de certains composés organiques volatils (COV). Différents catalyseurs à base de platine ont ainsi été préparés et leurs performances catalytiques évaluées pour l'oxydation de deux polluants : le n-butanol et l'acide acétique. Une première étude sur l'élimination oxydative et non-oxydative du n-butanol sur des catalyseurs à base de platine supportés sur alumine a été menée. Ce travail a porté essentiellement sur l'étude de l

APA, Harvard, Vancouver, ISO, and other styles

11

Gholizadeh, Laili. "Enhanced Butanol Production by Free and Immobilized Clostridium sp. Cells Using Butyric Acid as Co-Substrate." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-19690.

Full text

Abstract:

Butanol production by four different Clostridium sp. strains was investigated using glucoseP2-medium supplemented with increasing concentrations of butyric acid, added as cosubstrate.Batch fermentations were carried out in serum bottles (freely-suspended cellcultures) and fibrous-bed bioreactor (FBB) with medium recirculation (immobilized cells).Butyric acid clearly revealed to inhibit cellular growth with all specific growth rates decliningupon the increase of butyrate concentrations. However, the presence of low and moderatelevels in the medium can readily enhance the ABE-fermentation and in

APA, Harvard, Vancouver, ISO, and other styles

12

Amponsah, Yvonne. "In situ product recovery of butanol and butyric acid from fermentation processes using gas stripping and reverse osmosis." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

Find full text

Abstract:

Two types of in situ product recovery processes are investigated: gas stripping for solvent removal in continuous butanol fermentation and reverse osmosis for acid separation and purification in a continuous butyric acid fermentation. Gas stripping and reverse osmosis are easy to operate and design processes that can be integrated to fermentation processes.

APA, Harvard, Vancouver, ISO, and other styles

13

LONGO, VALERIA. "A protein-based biorefinery for bulk chemicals production." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2013. http://hdl.handle.net/10281/41977.

Full text

Abstract:

A biorefinery should ideally integrate biomass conversion processes to produce a range of fuels, power, materials, and chemicals from biomass. The term biorefinery is derived both from the raw material feedstock which is renewable biomass and also from the bioconversion processes often applied in the treatment and processing of the raw materials. Renewable sources are the basis of the alternative energy, fuels and compound obtained in a biorefinery-based way to meet the energy demand in a world where petrol fuels are becoming scarce and more expensive. The current biorefinery schemes

APA, Harvard, Vancouver, ISO, and other styles

14

Mudjariana, Eny. "Détermination expérimentale des équilibres liquide-vapeur des binaires acide acrylique-éthyl-2-héxanol et acide acrylique-1 butanol : Modélisation par les modèles NTRL et UNIFAC modifié." Compiègne, 1992. http://www.theses.fr/1992COMPD492.

Full text

Abstract:

Le but de la présente étude est la détermination expérimentale et la modélisation des équilibres entre phase (liquide-vapeur) en vue d'obtenir des informations sur différentes opérations unitaires : distillation et procédés de synthèse. La première partie de cette étude présente les appareillages de mesure et les méthodes opératoires permettant d'obtenir de façon rapide des résultats précis sur les équilibres étudiés dans les conditions industrielles, c'est-à-dire à pression constante. La deuxième partie de notre travail concerne l'analyser des résultats expérimentaux portant sur les binaires

APA, Harvard, Vancouver, ISO, and other styles

15

BERTERAME, NADIA MARIA. "Exploitation of Saccharomyces cerevisiae for the challenging conversion of renewable substrates into biofuels and chemicals." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2015. http://hdl.handle.net/10281/67452.

Full text

Abstract:

Le risorse fossili sono a oggi la principale fonte sfruttata dall’uomo per la produzione di energia elettrica e combustibili, nonché come materia prima per l’industria, in particolare quella chimica. Il progressivo esaurimento dei giacimenti, che a sua volta determina un innalzamento dei prezzi, insieme alla necessità di una maggior sostenibilità ambientale hanno contribuito ad aumentare l’interesse verso fonti alternative. All’interno di tale contesto si pone il presente lavoro, volto alla produzione sia di un composto chimico di rilevante importanza, l’acido lattico, che di due biocarburant

APA, Harvard, Vancouver, ISO, and other styles

16

Matta-El-Ammouri, Ghassan. "Fermentation acétonobutylique : Obtention de mutants résistants au butanol, action des acides acétique et butyrique sur la formation de solvants." Nancy 1, 1986. http://www.theses.fr/1986NAN10079.

Full text

Abstract:

Dans la fermentation acétonobutylique, la conversion du sucre en solvants est de l'ordre de 33 % ; le rapport habituel butanol/acétone/éthanol est 6/3/1/ ; la concentration maximale de glucose pouvant être dégradé est de 60 g/1 pour une teneur finale en solvants de 20 g/1. La principale limitation de cette fermentation réside dans une inhibition par les produits, en particulier le butanol, qui perturbe le métabolisme bactérien. Ce travail s'est focalisé sur l'obtention de mutants résistants au butanol, et sur le mécanisme d'action des acides acétique et butyrique dans la formation de solvants.

APA, Harvard, Vancouver, ISO, and other styles

17

Ben, Osman Manel. "Sensibilité de la réaction de conversion de l'éthanol en n-butanol à la structure des hydroxyapatites : mode de fonctionnement." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066567/document.

Full text

Abstract:

Les hydroxyapatites (HAps) sont des matériaux basiques qui présentent des propriétés catalytiques atypiques, notamment une sélectivité importante en butanol à partir de l’éthanol. Leur versatilité en termes de composition et de morphologie, facilement contrôlée par la synthèse, s’accompagne d’une grande modularité des propriétés acido-basiques de la surface, ce qui nous a permis d’établir des relations structure-réactivité dans l’objectif de rationaliser son mode de fonctionnement au niveau moléculaire. Certes, la stœchiométrie qui traduit le rapport Ca/P est un paramètre clé pour l’activité d

APA, Harvard, Vancouver, ISO, and other styles

18

Ben, Osman Manel. "Sensibilité de la réaction de conversion de l'éthanol en n-butanol à la structure des hydroxyapatites : mode de fonctionnement." Electronic Thesis or Diss., Paris 6, 2014. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2014PA066567.pdf.

Full text

Abstract:

Les hydroxyapatites (HAps) sont des matériaux basiques qui présentent des propriétés catalytiques atypiques, notamment une sélectivité importante en butanol à partir de l’éthanol. Leur versatilité en termes de composition et de morphologie, facilement contrôlée par la synthèse, s’accompagne d’une grande modularité des propriétés acido-basiques de la surface, ce qui nous a permis d’établir des relations structure-réactivité dans l’objectif de rationaliser son mode de fonctionnement au niveau moléculaire. Certes, la stœchiométrie qui traduit le rapport Ca/P est un paramètre clé pour l’activité d

APA, Harvard, Vancouver, ISO, and other styles

19

Boris, Alexandra Jeanne. "Toward the Complete Characterization of Atmospheric Organic Particulate Matter: Derivatization and Two-Dimensional Comprehensive Gas Chromatography/Time of Flight Mass Spectrometry as a Method for the Determination of Carboxylic Acids." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/544.

Full text

Abstract:

Understanding the composition of atmospheric organic particulate matter (OPM) is essential for predicting its effects on climate, air quality, and health. However, the polar oxygenated fraction (PO-OPM), which includes a significant mass contribution from carboxylic acids, is difficult to speciate and quantitatively determine by current analytical methods such as gas chromatography-mass spectrometry (GC-MS). The method of chemical derivatization and two-dimensional GC with time of flight MS (GC×GC/TOF-MS) was examined in this study for its efficacy in: 1) quantifying a high percentage of the t

APA, Harvard, Vancouver, ISO, and other styles

20

Dias, Marcio Andrade. "Modelagem cinética da esterificação de sec-butanol com ácido acético e estudo de monitoramento em linha da reação com espectroscopia de infravermelho." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3137/tde-16112012-163258/.

Full text

Abstract:

A esterificação do sec-butanol com ácido acético, submetida à catálise homogênea, apresenta poucos resultados experimentais de cinética reacional e equilíbrio químico disponíveis na literatura. A presente dissertação visa determinar os parâmetros cinéticos e de equilíbrio químico desta reação de esterificação, empregando modelo cinético de 2ª ordem baseado em atividades. Os experimentos cinéticos foram realizados em reator batelada com auxílio da metodologia Karl Fischer para análise do teor de água e determinação do perfil de frações molares ao longo da reação. A principal dificuldade na mode

APA, Harvard, Vancouver, ISO, and other styles

21

Silvester, Lishil. "Synthesis of higher alcohols from ethanol over hydroxyapatite-based catalysts." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10002/document.

Full text

Abstract:

Dans un contexte mondial de demande croissante en énergie et d’une raréfaction des combustibles fossiles, la transformation de la biomasse en combustibles liquides est une alternative prometteuse car la biomasse est une source d'énergie renouvelable. L'éthanol et le butanol, alcools primaires les plus fréquemment rencontrés, peuvent être synthétisés à partir de la biomasse et utilisés (éthanol) ou envisagés d’être utilisés (butanol) comme biocarburants liquides. Le bio-butanol peut être obtenu selon plusieurs voies comme le procédé « Oxo », la fermentation « ABE » et la synthèse des alcools de

APA, Harvard, Vancouver, ISO, and other styles

22

Janati-Idrissi, Rachid. "Utilisation de mutants pour l'étude du mécanisme de la fermentation acétono-butylique." Nancy 1, 1987. http://www.theses.fr/1987NAN10088.

Full text

Abstract:

Sélection de mutants plus tolérants vis-à-vis du butanol et produisant plus de solvants, et de mutants ne produisant pas d'acétone en l'absence d'acide acétique dans le milieu. Étude des effets des acides acétique, butyrique et pyruvique sur la production de solvants et sur les activités de différentes enzymes (acétate kinase, butyrate kinase, coenzyme à transférase, acétoacétate décarboxylase,. . . ). Étude des effets du PH

APA, Harvard, Vancouver, ISO, and other styles

23

Junelles, Anne-Marie. "Étude du mécanisme de la solvantogénèse chez clostridium acétobutylicum : Utilisation de mutants altérés dans le métabolisme de l'acétate et du butyrate." Nancy 1, 1988. http://www.theses.fr/1988NAN10161.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Dupas, Georges. "Synthèse et réactivité de modèles du NADH : modèles chiraux, modèles greffés." Rouen, 1987. http://www.theses.fr/1987ROUES007.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Potin-Gautier, Martine. "Photoamidation d'olefines fluorees, en milieu homogene et en milieux microemulsions non aqueux." Toulouse 3, 1987. http://www.theses.fr/1987TOU30011.

Full text

Abstract:

Les amides perfluores et mixtes (a doubles chaines hydrogenee et perfluoree) sont des precurseurs de tensioactifs susceptibles d'ameliorer les proprietes des mousses extinctrices, par diminution de la tension interfaciale entre l'eau et l'huile par un meilleur etalement de la mousse. Ces amides sont synthetises par photoamidation d'olefines : r::(f)-ch=ch::(2), r::(f)-ch=ch-r::(h), r::(f)-ch::(2)-ch=ch-r::(h) dans le t-butanol et dans des microemulsions de formamide

APA, Harvard, Vancouver, ISO, and other styles

26

Arora, Sheetal. "Design of Phenyl Keto Butanoic Acid Derivatives as Inhibitors against Malate Synthase of M.Tuberculosis based on Docking & MD Simulation Studies." Thesis, 2009. http://ethesis.nitrkl.ac.in/1440/1/sheetal_thesis.pdf.

Full text

Abstract:

The emergence of multidrug-resistant strains of Mycobacterium tuberculosis (Mtb) has intensified efforts to discover novel drugs for tuberculosis (TB) treatment. Targeting the persistent state of Mtb, a condition in which Mtb is resistant to conventional drug therapies, is of particular interest. Persistent bacterial population relies on metabolic pathways that become active in low nutrient environment like glyoxylate shunt. Since the glyoxylate shunt enzymes are not present in mammals, they make attractive drug targets. This study is focused on malate synthase (MS), one of the enzymes in the

APA, Harvard, Vancouver, ISO, and other styles

27

Kao, Yu-Hsuan, and 高昱軒. "Etherification of Glycerol with N-Butanol by Acid Catalysts." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/93937261268503548876.

Full text

Abstract:

碩士<br>大同大學<br>化學工程學系(所)<br>101<br>The dehydration and etherification reactions of glycerol with n-butyl using Amberlyst 70 acid catalyst were performed. Using commercial standards and the databank of NIST as the references, the components of the product mixture identified using GC and GC/MS contained 1-butene (1B), n-butanol (NB), di-n-butyl ether (DBE), 1-Sec-butoxybutane (SBOB), mono n-butyl glycerol ethers (MBGEs), di-n-butyl glycerol ethers (DBGEs), glycerol (GLY) and water. 9% water in the product mixture was reduced to 0.15% using the Dean-Stark apparatus. The cetane number (CN) of the r

APA, Harvard, Vancouver, ISO, and other styles

28

Chou, Yu-Na, and 周玉娜. "Solid-Liquid Equilibrium for Mixtures Containing m-Toluic Acid, o-Toluic Acid and tert-Butanol." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/35125571202053047834.

Full text

Abstract:

碩士<br>國立臺灣科技大學<br>化學工程系<br>96<br>Solid-liquid equilibrium (SLE) data were measured with solid-disappearance method for various mixtures. The first part of this study investigated the binary systems containing fatty acids and methanol. The second part was to investigate the SLE behavior of various binary and ternary mixtures, which are related to the separation of closely boiling mixtures of o-toluic acid and m-toluic acid with extractive crystallization and tert-butanol was used as an auxiliary agent. The results showed that there were no complex formations in the investigated systems and thus

APA, Harvard, Vancouver, ISO, and other styles

29

王彥萍. "Dehydration of Methanol and Tert.-butanol over Soild Acid Catalysts." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/41039231599771997771.

Full text

Abstract:

碩士<br>東海大學<br>應用化學研究所<br>85<br>The synthesis of methyl tert.-butyl ether (MTBE) from methanol and tert.-butanol on solid acid catalysts was studied by using a batch reactor. Three types of catalysts were utilized: (1) HZSM-5, HY and Hβzeolites with difference SiO2/Al2O3; ratios; (2) Metal oxides and the cation-exchanged resin; (3) Hβp(75) modified with acids. The surface area and the acidity of catalysts were characterized by the methods of surface adsorption and temperature programmed desorption of ammonia. The catalyst characterized shows the following results: (1) For HZSM-5, HY and H

APA, Harvard, Vancouver, ISO, and other styles

30

Fu, Ke-cheng, and 傅科錚. "Reaction and phase equilibria of acetic acid and n-butanol at 101.32kPa." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/41881436268743909506.

Full text

Abstract:

碩士<br>國立中央大學<br>化學工程與材料工程研究所<br>95<br>The aim of this study will probe into the thermodynamic behavior of acetic acid, n-butanol, water and n-butyl acetate mixture. Because the influence of chemical reaction on the distillation process can''t be neglected, both the phase equilibrium and the chemical reaction equilibrium must be concerned. The experiments of chemical equilibrium and phase equilibrium were conducted in a modified Othmer type equilibrium cell. The catalyst(p-toluenesulfonic acid) was added to increase chemical reaction rate, and found no effect on the phase equilibrium. 41 experi

APA, Harvard, Vancouver, ISO, and other styles

31

Lin, Ying-Hong, and 林盈宏. "Etherification of Glycerol with Tert-Butanol Catalysed by a Solid Acid Catalyst." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/92405755806988566501.

Full text

Abstract:

碩士<br>大同大學<br>化學工程學系(所)<br>99<br>The etherification of glycerol with tert-butanol on the sulfonated carbon catalyst (HS-R) provides a way to transform glycerol into a value added product to be used as an oxygenated additive to diesel fuels. With a 4:1 molar ratio of tert-butanol to glycerol, a 1:10 weight ratio of catalysts to glycerol, the etherification reaction glycerol with tert-butanol in an autoclave under autogenic pressures were performed over the reaction temperatures ranged from 363 K to 473 K at the reaction time of 18 hours. We found that under the reaction temperature (473 K), a s

APA, Harvard, Vancouver, ISO, and other styles

32

Zhang, Hong Qi, and 張鴻琦. "Batch Reactive Distillation of Quaternary SystemLactic Acid–N-Butanol–Water–N-Butyl Lactate." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/14388953153561168848.

Full text

Abstract:

碩士<br>東海大學<br>化學工程與材料工程學系<br>101<br>Reactive distillation can be an effective means for purification of crude lactic acid. It can be achieved by esterification of crude lactic acid with n-butanol, followed by hydrolysis of butyl lactate. In this study, the feasibility of reactive distillation for esterification and hydrolysis reactions was evaluated through batch reactive distillation experiments. Esterification process was accomplished by batch reactive distillation using different n-butanol to lactic acid feed ratios, while hydrolysis process was conducted at vacuum condition (4.5kPa) with d

APA, Harvard, Vancouver, ISO, and other styles

33

Chen, Shih Chi, and 陳世濟. "Engineering Higher 1-Butanol to 1-Propanol Ratio from Keto-Acid Pathway in Escherichia coli." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/88332724630800002992.

Full text

Abstract:

碩士<br>國立清華大學<br>化學工程學系<br>104<br>1-Butanol is the most popular one of biomass energy because its energy content is similar with petroleum. On the other hand, 1-butanol is hydrophobic and the vapor pressure is lower than ethanol, so 1-butanol has the higher convenience of transport and storage. We think 1-butanol has the potential to become a substitute for petroleum. The previous study has successfully developed a synthetic amino acid metabolic pathways to transform itself to the production of 1-butanol from ketoacids. This study uses glucose as carbon source and citramalate pathway which is o

APA, Harvard, Vancouver, ISO, and other styles

34

Huang, Wen-Chi, and 黃文旗. "Study on the Esterification Reaction for Propionic Acid and n-Butanol Catalyzed by Nano-LHDs." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/98323941800800175042.

Full text

Abstract:

碩士<br>國立成功大學<br>化學工程學系碩博士班<br>91<br>A series of organic intercalated layered anionic clays, named LDHs, were synthesized using coprecipitation reaction. The LDH was intercalated with long chain fatty acids (CH3(CH2)nCOOH, n=10, 14, 16) between these layers to synthesis the modified LDHs. These modified LDHs were characterized by FT-IR, X-ray, EA, and ICP and showed that these fatty acids incorporation within the inter-gallery space. From the experiments, the CH3(CH2)10COOH as intercalated agent has promote the esterification reaction well than others. Hence, we used Mg-Al12C/LDHs, Zn-Al12C

APA, Harvard, Vancouver, ISO, and other styles

35

Xiang, Jun-Qiang, and 項軍強. "Study of Solid acid catalysts for glycerol reacted with n-butanol to synthesize oxygenated additive." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/76be5a.

Full text

Abstract:

碩士<br>義守大學<br>化學工程學系暨生物技術與化學工程研究所<br>106<br>Since the world’s growing demand for renewable energy in biodiesel industry, overproduction of glycerol is becoming an issue of concern. Etherification of glycerol with alcohol to synthesize the alkyl ethers of glycerol is an active research area of academic and industrial issues to explore the possibility to identify the potential catalysts and optimize the process parameter. In this work, the catalytic etherification of glycerol has been investigated with two kinds of catalyst, Aluminum Sulfate and bismuth(III) trifluoromethanesulfonate, in a batch

APA, Harvard, Vancouver, ISO, and other styles

36

Chen, cheng han, and 陳正翰. "Phase Equilibrium Studies in the Quaternary Lactic Acid–N-Butanol–Water–N-Butyl Lactate System with Chemical Reaction." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/61421254652043955838.

Full text

Abstract:

碩士<br>東海大學<br>化學工程與材料工程學系<br>98<br>Reactive distillation can be an effective means for purification of crude lactic acid. It can be achieved by esterification of crude lactic acid with n-butanol, followed by hydrolysis of butyl lactate. In order to develop this reactive distillation process, measurement of phase equilibrium data and their regression are necessary and are the focus of this study. In this study, headspace chromatography method was employed to measure binary vapor-liquild equilibrium data of n-butanol/n-butyl lactate and water/n-butanol systems at 348.15K, and the experiment

APA, Harvard, Vancouver, ISO, and other styles

37

"Inhibitory effects of acids found in crude glycerol and lignocellulosic biomass on clostridium pasteurianum for butanol production." Tulane University, 2020.

Find full text

Abstract:

archives@tulane.edu<br>As fossil fuel resources decrease while pollution and greenhouse gas emissions from gasoline increase, the need for an alternative transportation fuel is pressing (Cassia et al. 2018). Current substitutes include ethanol-mixed gasolines, which have lower efficiency than gasoline and still rely on fossil fuels. Butanol, another possible gasoline substitution, is promising. It is a much more efficient fuel than ethanol and can be directly substituted for gasoline (Seggiani et al. 2012). Current techniques to mass-produce butanol depend on fermentation of sugars for butanol

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!