Log in

Relevant bibliographies by topics / ULTRASOUND ASSISTED SYNTHESIS / Dissertations / Theses

To see the other types of publications on this topic, follow the link: ULTRASOUND ASSISTED SYNTHESIS.

Dissertations / Theses on the topic 'ULTRASOUND ASSISTED SYNTHESIS'

Author: Grafiati

Published: 4 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 21 dissertations / theses for your research on the topic 'ULTRASOUND ASSISTED SYNTHESIS.'

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

BARTZOKA, ELISAVET. "Ultrasound assisted synthesis of polyphenol micro-capsules for controlled active delivery." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2016. http://hdl.handle.net/2108/201819.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Prabhavathi, Kalluri. "Ultrasound-assisted synthesis of some N-heterocyclic long-chain fatty ester derivatives." Thesis, Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B17592185.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Alessi, Sebastiano <1995&gt. "Ultrasound-assisted synthesis of lignin microcapsules for the controlled release of active compounds." Master's Degree Thesis, Università Ca' Foscari Venezia, 2021. http://hdl.handle.net/10579/19173.

Full text

Abstract:

Lignin represents a highly valuable, yet very underutilized biobased material. Being the most abundant source of aromatics on the planet, it is produced in high quantities as by-product of pulp and paper industries and biorefineries. Due to the high degree of structural variability, which depends on the different plant origin and harsh conditions experienced during the processing, an exhaustive valorisation of lignin is all but straightforward. Among various possibilities, the synthesis of micro- and nano-structures from untreated technical lignins is one of the best solutions for the developm

APA, Harvard, Vancouver, ISO, and other styles

4

Khan, Muhammad Kamran. "Polyphénols d’agrumes (flavanones) : extraction de glycosides de la peau d’orange, synthèse de métabolites chez l’homme (glucuronides) et étude physico-chimique de leur interaction avec la sérum albumine." Thesis, Avignon, 2010. http://www.theses.fr/2010AVIG0238/document.

Full text

Abstract:

Un groupe d'études épidémiologiques fournit une bonne preuve de la relation inverse associé à la consommation de fruits et légumes et les maladies chroniques important comme maladies cardiovasculaires et certains types de cancers. Après les longues années d'études sur phytomacronutrients, le rôle de phytomicronutrients tels que les polyphénols est désormais très étudiée et appréciée dans le contrôle de ces maladies dégénératives. La présente étude combine les études d'extraction, de synthèse et d'analyse sur les principaux polyphénols des fruits d'agrumes, FLAVANONES. Connaissance de nutrition

APA, Harvard, Vancouver, ISO, and other styles

5

Apshingekar, Prafulla P., Suyog Aher, Adrian L. Kelly, Elaine C. Brown, and Anant R. Paradkar. "Synthesis of caffeine/maleic acid co-crystal by ultrasound assisted slurry co-crystallization." 2016. http://hdl.handle.net/10454/8961.

Full text

Abstract:

Yes<br>A green approach has been used for co-crystallization of non-congruent co-crystal pair of caffeine – maleic acid using water. Ultrasound is known to affect crystallization hence the effect of high power ultrasound on the ternary phase diagram has been investigated in detail using a slurry co-crystallization approach. A systematic investigation was performed to understand how the accelerated conditions during ultrasound assisted co-crystallization will affect different regions of the ternary phase diagram. Application of ultrasound showed considerable effect on the ternary phase diagram;

APA, Harvard, Vancouver, ISO, and other styles

6

Juang, Bi-Hung, and 莊必泓. "Synthesis of Inimides by Ultrasound-Assisted Phase-Transfer Catalysis in Solid-Liquid System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/81431228663368017162.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>102<br>The thesis is to investgate the kinetics for the synthesis of inimide products by ultrasound-assisted phase transfer catalyst in solid-liquid system. The N-alkylation in the succinimide compounds contains alkaloids which can be applied to several special bioactivities, cosmestic chemicals and medical drug. The study is to use phase transfer catalyst by ultrasound- assisted in solid-liquid system. With the course of the reaction ,the N-alkylation is conducted from solid reactant reacted with benzyl bromide or (2-bromoethyl)benzene in the organic phase with

APA, Harvard, Vancouver, ISO, and other styles

7

Lee1, Hsieh-Feng, and 李協峰. "Synthesis of Butyl Benzoate via Ultrasound-Assisted Phase-Transfer Catalysis in Solid-Liquid System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/50741086116307854733.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>102<br>The present study was to investigate the synthesis of butyl benzoate via ultrasound-assisted phase-transfer catalysis in solid-liquid system. The following factors were discussed in this study, including agitation speed, amount of organic reactant, different catalysts, the amount of catalyst, different solvents, ultrasonic frequency, ultrasonic power, and effect of ionic liquid. According to the experimental results, it revealed that using aliquat 336 as the phase-transfer catalyst gave the better yield than using PEG 400, TBPB, TBAB and BTBAB. When the amount

APA, Harvard, Vancouver, ISO, and other styles

8

Yang, Yu-Che, and 楊聿喆. "Synthesis of Allyl Phenyl Ether by Ultrasound-Assisted Liquid-Liquid Phase-Transfer Catalysis in Capillary Micro-reactor." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/39885894964936921475.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>99<br>In this study, allyl phenyl ether was synthesized by ultrasound-assisted liquid-liquid phase-transfer catalysis in capillary micro-reactor. In general, we use micro-reactor can be increased specific surface between organic phase and aqueous phase, and increased reaction rate. In this study, we compared the difference in performance between batch reactor and micro-reactor. The operating parameters including reactor length, types of catalyst, amount of catalyst, types of solvent, reaction temperature, space time, ultrasonic frequency and power, were all performed

APA, Harvard, Vancouver, ISO, and other styles

9

Tu, Chi-Yuan, and 涂綦遠. "Synthesis of n-Octyl Salicylate by Ionic Liquid and Ultrasound-Assisted Phase-Transfer Catalysis in Solid-Liquid System." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/39997840510722640230.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>102<br>In this study, the esterification of sodium salicylate and octyl bromide to synthesize n-octyl salicylate by ultrasound and ionic liquid promoted phase-transfer catalyst in solid-liquid system was investigated. The operating parameters included ultrasound, temperature, types of catalyst, amounts of catalyst and ionic liquid, addition of salt, agitation speed, etc.. The novel dual-site phase transfer catalyst, 1, 4-bis (trihexyl ammoniomethyl) benzene dibromide (BTHAMBB, QBr2) was synthesized from p-xylene dibromide and trihexylamine in acetonitrile at 70˚C. Co

APA, Harvard, Vancouver, ISO, and other styles

10

Yang, Chun-Wei, and 楊峻瑋. "Synthesis of n-Octyl Salicylate by Ultrasound and Ionic Liquid Assisted Phase Transfer Catalyst in Tri-Liquid System." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/30770182470672882522.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>101<br>In this study, the esterification of sodium salicylate and octyl bromide to synthesize n-octyl salicylate by ultrasound and ionic liquid promoted phase-transfer catalyst in tri-liquid system was investigated. The explored operating parameters included ultrasound, temperature, types of catalyst, addition catalyst and ionic liquid, addition of salt, agitation speed, etc..The novel dual-site phase transfer catalyst, 1,4’-bis(trihexyl ammoniomethyl) benzene dibromide (BTHAMBB, QBr2), was synthesized from P-xylene dibromide and trihexylamine in acetonitrile at 70˚C

APA, Harvard, Vancouver, ISO, and other styles

11

Chen, Shu-Wei, and 陳書瑋. "Synthesis of Coral-like Bi2O3 Microspheres Using Ultrasound-assisted Method for Photocatalytic Degradation of Organic Pollutants in Water." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/7t9ust.

Full text

Abstract:

碩士<br>逢甲大學<br>環境工程與科學學系<br>103<br>Semiconductor photocatalytic materials have been widely used in various fields, including hydrogen production by photocatalyst, environmental remediation, and biomedical technology. Photocatalyst materials can drive photocatalytic reaction under the illumination of UV or visible light. According to the current research, it is the main stream to develop and synthesize new photocatalysts to significantly enhance the absorption of visible light. Bismuth oxide is an important metal oxide and semiconductor material since it has a good stability and photocatalysis t

APA, Harvard, Vancouver, ISO, and other styles

12

Chen, Ying-Chun, and 陳盈君. "Synthesis of 4-Methoxyphenylacetic Acid Butyl Ester by Ultrasound-Assisted Dual-Site Phase Transfer Catalyst in Tri-Liquid Phases." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/43146008898563218788.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>98<br>The study is to use potassium 4-methoxyphenylacetate (ArCOOK) and 1-bromobutane to synthesize of 4-methoxyphenylacetic acid butyl ester by ultrasound-assisted dual-site phase transfer catalyst in tri-liquid phases. In the present study, dual-site phase transfer catalyst, 1,4-bis(tributylammoniomethyl)benzene dibromide (BTBAMBB, QBr2), was synthesized from p-xylylene and butylamine in acetonitrile at 70˚C. Investigations included conditions of forming and changes of composition in the third-liquid phase and kinetics of synthesizing 4-methoxyphenyl acetic acid bu

APA, Harvard, Vancouver, ISO, and other styles

13

Peng, Guan-Yi, and 彭冠益. "Synthesis of o-Hydroxybenzoic Acid Butyl Ester in Continuous Flow Reactor via Ultrasound Assisted Tri-Liquid Phase-Transfer Catalysis." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/71619642902832679634.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>96<br>The present study is to investigate the kinetics of synthesizing o-hydroxybenzoic acid n-butyl ester in a continuous flow reactor via ultrasound-assisted tri-liquid phase-transfer catalysis. The operating parameters including agitation speeds, types of catalyst, amount of catalyst, types of solvent, reaction temperature, types of inorganic salt, amount of reactant, space time, ultrasonic frequency and power, were all performed to find the optimal reaction conditions. Sonochemistry is a technique to increase chemical reaction rate by ultrasounic irradiation.

APA, Harvard, Vancouver, ISO, and other styles

14

Hsu, Chun-Ming, and 徐駿銘. "Synthesis of 2-Phenoxyethyl Salicylate by Ultrasound and Ionic Liquid Assisted Dual-Site Phase-Transfer Catalyst in Tri-Liquid System." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/27873212639073492297.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>103<br>In this study, the esterification of sodium salicylate with 2-phenoxyethyl bromide to synthesize 2-phenoxyethyl salicylate by ultrasound and ionic liquid promoted dual-site phase-transfer catalyst in third-liquid system was investigated. The investigations included the composition of the third-liquid phase and kinetics of synthesizing 2-phenoxyethyl salicylate. The dual-site phase-transfer catalyst 1,4-bis(trihexylammoniomethyl) benzene dibromide (BTHAMBB，QBr2) was synthesized from p-xylene dibromide and trihexylamine and proved by 1H NMR, 13C NMR and elementa

APA, Harvard, Vancouver, ISO, and other styles

15

Lin, Jia-Hua, and 林佳樺. "Synthesis of o-Hydroxybenzoic Acid Butyl Ester by Ultrasound-Assisted Phase-Transfer Catalysis with Ionic Liquid in Solid-Liquid System." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/78434583237028435286.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>104<br>In this study, o-hydroxybenzoic acid butyl ester was synthesized from the reaction of sodium salicylate and 1-bromobutane via a phase-transfer catalyst,under ultrasound irradiation in a solid-liquid batch system with ionic liquid. The explored operating parameters included ultrasound, types of catalyst, addition catalyst, ionic liquid , agitation speed, temperature,etc.. 　　For the reaction mechanism, the reactions dominated to conduct in the interface between the organic and solid phases. As adding ionic liquid in the system, the reaction of catalytic interme

APA, Harvard, Vancouver, ISO, and other styles

16

Hung, Yu-Hung, and 洪瑜鴻. "Synthesis of o-Hydroxybenzoic Acid Butyl Ester by Ultrasound-Assisted Phase Transfer Catalysis in Tri-Liquid System with Ionic Liquid." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/48326612738200712621.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>100<br>In this study, o-hydroxybenzoic acid butyl ester was synthesized from the reaction of sodium salicylate and 1-bromobutane via a dual-site phase-transfer catalyst, 1,4-bis(trihexylammoniomethyl)benzenedibromide(BTHAMBB), under ultrasound irradiation in a tri-liquid batch system with ionic liquid. The catalyst BTHAMBB was synthesized from the reaction of p-xylylene dibromide and excess trihexylamine in acetonitrile at 70 oC. In this study, the investigation included the forming condition of the tri-liquid phase by BTHAMBB and kinetics of synthesizing sodium sali

APA, Harvard, Vancouver, ISO, and other styles

17

Lin, Dai-Wen, and 林岱汶. "Synthesis of 2-Phenoxyethyl Benzoate by Ultrasound-Assisted Phase-Transfer Catalysis with Dual-Site Phase-Transfer Catalyst in Tri-liquid System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/82833234913459055388.

Full text

Abstract:

碩士<br>國立中興大學<br>化學工程學系所<br>99<br>In this study, 2-phenoxyethyl benzoate was synthesized from the reaction of sodium benzoate and 2-phenoxyethyl bromide via a dual-site phase-transfer catalyst, 1,4-bis(trihexylammoniomethyl)benzene dibromide (BTHAMBB), under ultrasound irradiation in a tri-liquid batch system. The catalyst BTHAMBB was synthesized from the reaction of p-xylylene dibromide and excess trihexylamine in acetonitrile at 70 ℃. In this study, the investigations included the forming condition of the third-liquid phase by BTHAMBB and kinetics of synthesizing 2-phenoxyethyl benzoate. The

APA, Harvard, Vancouver, ISO, and other styles

18

Chu, Wei-Ming, and 朱韋名. "Synthesis of Benzyl 4-Hydroxybenzoate by Ultrasound-Assisted Phase-Transfer Catalysis with Dual-Site Phase-Transfer Catalyst in Solid-liquid System." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/20861639339983499694.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Yang, Ching-ya, and 楊清雅. "Ultrasound-assisted dispersive liquid-liquid microextraction for the rapid determination of synthetic polycyclic musks in aqueous samples." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/29755130701131347181.

Full text

Abstract:

碩士<br>國立中央大學<br>化學研究所<br>99<br>Currently, a group of widely used synthetic musk fragrances, synthetic polycyclic musks have been detected in air, freshwater, seawater and sediment samples. Because of their highly lipophilic properties, polycyclic musks have been also found in aquatic biota, such as mussels and fish, and even in human adipose tissue and breast milk. These compounds have demonstrated estrogenic activity, even higher concentrations of synthetic polycyclic musks in women''s bloods have been correlated to higher rate of miscarriage. 　　In this study, a simple and solvent-less proc

APA, Harvard, Vancouver, ISO, and other styles

20

Alves, Alice Maria de Araújo. "Detection of synthetic musk fragrances in aqueous matrices by ultrasound-assisted dispersive liquid-liquid microextraction followed by GC-MS." Master's thesis, 2014. https://repositorio-aberto.up.pt/handle/10216/89058.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Alves, Alice Maria de Araújo. "Detection of synthetic musk fragrances in aqueous matrices by ultrasound-assisted dispersive liquid-liquid microextraction followed by GC-MS." Dissertação, 2014. https://repositorio-aberto.up.pt/handle/10216/89058.

Full text

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!