Добірка наукової літератури з теми "Pickering interfacial catalysis"
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Статті в журналах з теми "Pickering interfacial catalysis":
Zhao, Qiangqiang, Xiao Zhao, Hui Peng, Yang Liu, Lihui Yang, Jie Sun, Lei Yang, and Yifeng Shen. "Correction: Static phase transfer catalysis for Williamson reactions: pickering interfacial catalysis." Catalysis Science & Technology 9, no. 15 (2019): 4147. http://dx.doi.org/10.1039/c9cy90061f.
Ma, Shenghua, Wei Zong, and Xiaojun Han. "Magnetic-responsive Pickering emulsion and its catalytic application at the water–oil interface." New Journal of Chemistry 45, no. 8 (2021): 3974–80. http://dx.doi.org/10.1039/d0nj05875k.
Qi, Liang, Zhigang Luo, and Xuanxuan Lu. "Modulation of starch nanoparticle surface characteristics for the facile construction of recyclable Pickering interfacial enzymatic catalysis." Green Chemistry 21, no. 9 (2019): 2412–27. http://dx.doi.org/10.1039/c9gc00779b.
Zhang, Hong, Minjing Shang, Yuchao Zhao, and Yuanhai Su. "Process Intensification of 2,2′-(4-Nitrophenyl) Dipyrromethane Synthesis with a SO3H-Functionalized Ionic Liquid Catalyst in Pickering-Emulsion-Based Packed-Bed Microreactors." Micromachines 12, no. 7 (July 5, 2021): 796. http://dx.doi.org/10.3390/mi12070796.
Sadgar, Amid L., Tushar S. Deore, and Radha V. Jayaram. "Pickering Interfacial Catalysis—Knoevenagel Condensation in Magnesium Oxide-Stabilized Pickering Emulsion." ACS Omega 5, no. 21 (May 19, 2020): 12224–35. http://dx.doi.org/10.1021/acsomega.0c00819.
Wang, Meng, Mengjie Wang, Shengmiao Zhang, and Jianding Chen. "Pickering gel emulsion stabilized by enzyme immobilized polymeric nanoparticles: a robust and recyclable biocatalyst system for biphasic catalysis." Reaction Chemistry & Engineering 4, no. 8 (2019): 1459–65. http://dx.doi.org/10.1039/c9re00158a.
Zhang, Mingjie, Zhiyang Tang, Wenqin Fu, Weiying Wang, Rong Tan, and Donghong Yin. "An ionic liquid-functionalized amphiphilic Janus material as a Pickering interfacial catalyst for asymmetric sulfoxidation in water." Chemical Communications 55, no. 5 (2019): 592–95. http://dx.doi.org/10.1039/c8cc08292h.
Reeves, Matthew, Kevin Stratford, and Job H. J. Thijssen. "Quantitative morphological characterization of bicontinuous Pickering emulsions via interfacial curvatures." Soft Matter 12, no. 18 (2016): 4082–92. http://dx.doi.org/10.1039/c5sm03102h.
Wang, Lei, Ping Wen, Xiaoman Liu, Yuting Zhou, Mei Li, Yudong Huang, Lin Geng, Stephen Mann, and Xin Huang. "Single-step fabrication of multi-compartmentalized biphasic proteinosomes." Chemical Communications 53, no. 61 (2017): 8537–40. http://dx.doi.org/10.1039/c7cc04180b.
Zhao, Qianqiang, Xiao Zhao, Hui Peng, Yang Liu, Lihui Yang, Jie Sun, Lei Yang, and Yifeng Shen. "Static phase transfer catalysis for Williamson reactions: Pickering interfacial catalysis." Catalysis Science & Technology 9, no. 13 (2019): 3445–53. http://dx.doi.org/10.1039/c9cy00620f.
Дисертації з теми "Pickering interfacial catalysis":
Yang, Bingyu. "Pickering interfacial catalysis for oxidative cleavage by H2O2 in biphasic systems." Thesis, Lille 1, 2017. http://www.theses.fr/2017LIL10212.
Biphasic water/oil systems stabilized by catalytic amphiphilic nanoparticles (NPs) are the origin of the Pickering Interfacial Catalysis (PIC) concept. By favoring the reaction at the water/oil interface driven by an enhanced contact between the phases, these micro-dispersed systems provide an alternative to the use of homogeneous and phase-transfer catalysts, which are hardly recyclable. The combination of amphiphilic NPs based on polyoxometalates and silicas modifed by grafting alkyl chains and acid centers allowed the transposition of the PIC concept to the oxidative cleavage of olefins for the green synthesis of diacids with potential industrial value (e.g. adipic acid). Indeed, the combination of both NPs revealed a strong synergistic effect for Pickering emulsions (droplet size, stability) and the catalytic performance. In particular, very high selectivities were achieved for the synthesis of adipic acid, thus highlighting the possibility of carrying out acid-redox catalytic cascades at the water/oil interface. In light of the results, we termed this new application of the PIC concept as Pickering Interfacial Cascade Catalysis (PICC). By assembling two types of catalytic NPs at the water/oil interface, it is possible to design catalytic cascades in biphasic media while complying with the Green Chemistry principles with respect to atom economy and the separation of the reaction product and the catalytic NPs
Douyère, Grégory. "Émulsions de Pickering stimulables stabilisées par des polymères : élaborations, caractérisations et applications catalytiques et pharmaceutiques." Electronic Thesis or Diss., Université de Lille (2018-2021), 2021. http://www.theses.fr/2021LILUR048.
Emulsions are micro-dispersed systems conventionally stabilized by surface active molecules. Due to their potentially negative impact on the environment, surfactants tend to be replaced by colloidal particles leading to Pickering emulsions. These emulsions are now enjoying a renewed interest, particularly in the field of catalysis. Indeed, the use of particles responding to specific stimuli such as pH or temperature allows to control the type of emulsion or even its destabilization, which can present an undeniable advantage at the end of a reaction. The objective of this work was therefore to develop new Pickering emulsion systems based on reactive particles. First, we focused on two type of polymeric particles, poly(4-vinylpyridine) (P4VP), sensitive to pH and salt, and polyethyleneimine (PEI), sensitive to pH and temperature. The emulsions obtained in the presence of different oils were characterized and the effects of pH, temperature and salt addition were studied demonstrating the reversibility of the systems under the action of these stimuli. In a second step, emulsions with antibacterial, antifungal and antibiofilm properties were elaborated from the self-assembly of cyclodextrins and phytochemical oils through insoluble inclusion complexes. These emulsions proved to be very effective in the fight against pathogens. Finally, Pickering interfacial catalysis was successfully applied to the synthesis of adipic and suberic acids by combining tri(dodecyltrimethylammonium) phosphotungstate [C12]3[PW12O40], silica grafted with alkyl and sulfonic groups, C18/C3SO3H@SiO2, and acidic phosphate salts as co-catalysts. Under optimal conditions, quantitative olefin conversion associated with boosted acid yields to 70 and 65 % in the presence of Na2HPO4 and (C12)H2PO4, respectively. These additives potentiate the particles self-assembly. The existence of these systems relies on the adaptability of the particles to specific environments and show that their physicochemical properties can be tuned to confer the desired characteristics
Pacaud, Benjamin. "Les polyoxométallates, de nouveaux générateurs d’oxygène singulet : applications à la catalyse interfaciale en microémulsions et émulsions de Pickering." Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1R060.
In this work, we focused on the catalytic generation of singlet oxygen (1O2), a selective oxidant allowing access to many oxygenated intermediates of interest for fine chemistry, by polyoxometalate (POMs). The screening of a series of POMs allowed us to evidence, through the specific detection of the infrared luminescence at 1270 nm, the formation of 1O2 from the decomposition of hydrogen peroxide catalyzed by POMs. More specifically, polyoxoniobates have been proved to be more active, and have been the subject of extensive studies. In order to use these systems for the oxidation of hydrophobic substrates, alkylammonium salts have been prepared, giving them amphiphilic properties to carry out interfacial catalysis. Thus, we have shown that depending on the nature of the solvent, in the presence of water, microemulsion systems and Pickering emulsions can be obtained. Their interest in oxidation catalysis has been demonstrated, illustrating a new example of the "Pickering Interfacial Catalysis" (PIC) concept in emulsion. In addition, we also report, for the first time, a new balanced catalytic surfactant (BCS concept) based on POMs leading to the spontaneous formation of triphasic microemulsion systems in presence of oil and water. Finally, catalytic Pickering emulsions based on cyclodextrins (CDs), previously developed in the laboratory, were reconsidered from the perspective of interfacial catalysis, which led us to propose a new concept of hybrid self-assembled core-shell nanoparticles (CD@POM)
Pacaud, Benjamin. "Les polyoxométallates, de nouveaux générateurs d’oxygène singulet : applications à la catalyse interfaciale en microémulsions et émulsions de Pickering." Electronic Thesis or Diss., Université de Lille (2018-2021), 2018. http://www.theses.fr/2018LILUR060.
In this work, we focused on the catalytic generation of singlet oxygen (1O2), a selective oxidant allowing access to many oxygenated intermediates of interest for fine chemistry, by polyoxometalate (POMs). The screening of a series of POMs allowed us to evidence, through the specific detection of the infrared luminescence at 1270 nm, the formation of 1O2 from the decomposition of hydrogen peroxide catalyzed by POMs. More specifically, polyoxoniobates have been proved to be more active, and have been the subject of extensive studies. In order to use these systems for the oxidation of hydrophobic substrates, alkylammonium salts have been prepared, giving them amphiphilic properties to carry out interfacial catalysis. Thus, we have shown that depending on the nature of the solvent, in the presence of water, microemulsion systems and Pickering emulsions can be obtained. Their interest in oxidation catalysis has been demonstrated, illustrating a new example of the "Pickering Interfacial Catalysis" (PIC) concept in emulsion. In addition, we also report, for the first time, a new balanced catalytic surfactant (BCS concept) based on POMs leading to the spontaneous formation of triphasic microemulsion systems in presence of oil and water. Finally, catalytic Pickering emulsions based on cyclodextrins (CDs), previously developed in the laboratory, were reconsidered from the perspective of interfacial catalysis, which led us to propose a new concept of hybrid self-assembled core-shell nanoparticles (CD@POM)
Jangir, Bhawana. "Noble metal nanoparticles as pickering interfacial catalyst for hydrolytic oxidation of organosilanes." Thesis, 2017. http://localhost:8080/iit/handle/2074/7510.