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Journal articles on the topic 'Polymer-supported catalyst'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Bouzayani, Bakhta, and Maria Ángeles Sanromán. "Polymer-Supported Heterogeneous Fenton Catalysts for the Environmental Remediation of Wastewater." Molecules 29, no. 10 (2024): 2188. http://dx.doi.org/10.3390/molecules29102188.

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Materials based on polymer hydrogels have demonstrated potential as innovative Fenton catalysts for treating water. However, developing these polymer-supported catalysts with robust stability presents a significant challenge. This paper explores the development and application of polymer-supported heterogeneous Fenton catalysts for the environmental remediation of wastewater, emphasizing the enhancement of metal incorporation into catalysts for improved efficiency. The study begins with an introduction to the heterogeneous Fenton process and its relevance to wastewater treatment. It further de

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2

Zhao, Xiaobei, Yanhui Hou, Linlin Ye та ін. "Synthesis of α-Diimine Complex Enabling Rapidly Covalent Attachment to Silica Supports and Application of Homo-/Heterogeneous Catalysts in Ethylene Polymerization". International Journal of Molecular Sciences 24, № 17 (2023): 13645. http://dx.doi.org/10.3390/ijms241713645.

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For covalent attachment-supported α-diimine catalysts, on the basis of ensuring the thermal stability and activity of the catalysts, the important problem is that the active group on the catalyst can quickly react with the support, anchoring it firmly on the support, shortening the loading time, reducing the negative impact of the support on the active centers, and further improving the polymer morphology, which makes them suitable for use in industrial polymerization temperatures. Herein, we synthesized a α-diimine nickel(II) catalyst bearing four hydroxyl substituents. The hydroxyl substitue

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3

Zong, Kening, Yanhui Hou, Xiaobei Zhao, Yali Sun, Binyuan Liu та Min Yang. "Slurry Homopolymerization of Ethylene Using Thermostable α-Diimine Nickel Catalysts Covalently Linked to Silica Supports via Substituents on Acenaphthequinone-Backbone". Polymers 14, № 17 (2022): 3684. http://dx.doi.org/10.3390/polym14173684.

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Four supported α-diimine nickel(II) catalysts covalently linked to silica via hydroxyl functionality on α-diimine acenaphthequinone-backbone were prepared and used in slurry polymerizations of ethylene to produce branched polyethylenes. The catalytic activities of these still reached 106 g/molNi·h at 70 °C. The life of the supported catalyst is prolonged, as can be seen from the kinetic profile. The molecular weight of the polyethylene obtained by the 955 silica gel supported catalyst was higher than that obtained by the 2408D silica gel supported catalyst. The melting points of polyethylene o

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4

Kobayashi, Shū, and Satoshi Nagayama. "A Polymer-Supported Scandium Catalyst." Journal of Organic Chemistry 61, no. 7 (1996): 2256–57. http://dx.doi.org/10.1021/jo960003n.

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5

Stuart, A., N. Audic, P. Dyer, E. Hope, and S. Suhard. "Perfluoroalkylated Polymer-Supported Palladium Catalyst." Synfacts 2010, no. 12 (2010): 1432. http://dx.doi.org/10.1055/s-0030-1258912.

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6

Pushkarev, A. S., I. V. Pushkareva, S. P. Du Preez, et al. "IRIDIUM CATALYST SUPPORTED ON CONDUCTIVE TITANIUM OXIDES FOR POLYMER ELECTROLYTE MEMBRANE ELECTROLYSIS." Chemical Problems 17, no. 1 (2019): 9–15. http://dx.doi.org/10.32737/2221-8688-2019-1-9-15.

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7

Gu, Huoliang, Xiong Sun, Yong Wang, Haihong Wu, and Peng Wu. "Highly efficient mesoporous polymer supported phosphine-gold(i) complex catalysts for amination of allylic alcohols and intramolecular cyclization reactions." RSC Advances 8, no. 4 (2018): 1737–43. http://dx.doi.org/10.1039/c7ra12498h.

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8

Kumar, Sunil, Praveen Kumar Gupta, Amit Kumar, and Ramesh Kumar. "Oxidation of Styrene Catalyzed by Recyclable Polystyrene-Supported Pyrrole-2-Carboxaldehyde Metal Catalysts." Asian Journal of Chemistry 37, no. 6 (2025): 1458–68. https://doi.org/10.14233/ajchem.2025.33854.

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Polymer-supported heterogeneous catalysts were synthesized by anchoring pyrrole-2-carboxaldehyde on amino-methylated polystyrene and then loading V(IV), Mn(II), Ni(II) and Cu(II) ions on it. The resulting catalysts were characterized by CHNS analysis, FTIR, EDX, DRS, ESR and AAS spectral study confirming the successful immobilization of the metal complexes. The catalytic activity and selectivity of the polymer-supported catalysts were analyzed for the liquid phase oxidation of styrene mediated by H2O2 and tert-butyl hydroperoxide. The influence of reaction time, temperature and concentration o

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9

Trifoi, Ancuta, Andreea Turcanu, Rami Doukeh, Timea Gherman, Petru Filip, and Mihaela Bombos. "Catalytic Activity of Tungstophosphorous Acid Supported on Mesoporous Silica for Glycerol Acetalisation to Glycerol Formal." Revista de Chimie 69, no. 10 (2018): 2617–20. http://dx.doi.org/10.37358/rc.18.10.6592.

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For the acetalization reaction between glycerol and formaldehyde two mesoporous catalyst were prepared, characterized and tested. Mesoporous silicas (MCM-41 and HMS) were synthesized and used as supports for the phosphotungstic acid based catalysts. Glycerol was converted to glycerol formal through a solventless acetalization reaction with formaldehyde catalyzed by tungstophosphorous acid supported on two type of mesoporous silica (30PW/MCM41 and 30PW/HMS). The reaction was carried out in a batch reactor, at 120�C, using 2% catalyst. The highest yield ] 98.5% was achieved over mesoporous 30PW/

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de la Torre, Alexander F., Gabriel S. Scatena, Oscar Valdés, Daniel G. Rivera, and Márcio W. Paixão. "Ugi reaction-derived prolyl peptide catalysts grafted on the renewable polymer polyfurfuryl alcohol for applications in heterogeneous enamine catalysis." Beilstein Journal of Organic Chemistry 15 (June 4, 2019): 1210–16. http://dx.doi.org/10.3762/bjoc.15.118.

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The multicomponent synthesis of prolyl pseudo-peptide catalysts using the Ugi reaction with furfurylamines or isocyanides is described. The incorporation of such a polymerizable furan handle enabled the subsequent polymerization of the peptide catalyst with furfuryl alcohol, thus rendering polyfurfuryl alcohol-supported catalysts for applications in heterogeneous enamine catalysis. The utilization of the polymer-supported catalysts in both batch and continuous-flow organocatalytic procedures proved moderate catalytic efficacy and enantioselectivity, but excellent diastereoselectivity in the as

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11

Esteban, Noelia, Miguel Claros, Cristina Álvarez, et al. "Palladium Catalysts Supported in Microporous Phosphine Polymer Networks." Polymers 15, no. 20 (2023): 4143. http://dx.doi.org/10.3390/polym15204143.

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A new set of microporous organic polymers (POPs) containing diphosphine derivatives synthesized by knitting via Friedel–Crafts has been attained. These amorphous three-dimensional materials have been prepared by utilizing diphosphines, 1,3,5-triphenylbenzene, and biphenyl as nucleophile aromatic groups, dimethoxymethane as the electrophilic linker, and FeCl3 as a promoting catalyst. These polymer networks display moderate thermal stability and high microporosity, boasting BET surface areas above 760 m2/g. They are capable of coordinating with palladium acetate, using the phosphine derivative a

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12

Didier, Benoit, Mark F. Mohamed, Elizabeth Csaszar, Kate G. Colizza, Alexei A. Neverov, and R. Stan Brown. "Methanolysis of organophosphorus esters promoted by an M2+ catalyst supported on polystyrene-based copolymers." Canadian Journal of Chemistry 86, no. 2 (2008): 91–100. http://dx.doi.org/10.1139/v07-099.

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The methanolysis of three neutral organophosphorus esters (a phosphonate, a phosphonothioate, and a phosphorothionate) promoted by several polymer-supported Zn(II) or Cu(II) containing catalysts was studied. The catalysts consist of a Zn(II) or Cu(II) complex with 1,5,9-triazacyclododecane or phenanthroline attached to a porous polystyrene resin. In each case, the polymer supported catalyst showed activity at near neutral sspH in methanol (8.38) and ambient temperature and provided accelerations of up to a factor of 2.9 × 106 relative to the background reaction at sspH 9.05. The solid material

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13

Ebrahimzadeh, Farzaneh. "Nickel Nanoparticles Supported on Diphenylphosphinated Poly(Vinyl Alcohol-Co-ethylene) as a New Heterogeneous and Recyclable Catalyst for Mizoroki–Heck Reactions." Journal of Chemical Research 41, no. 9 (2017): 541–46. http://dx.doi.org/10.3184/174751917x15040898434417.

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Nickel nanoparticles (NiNPs) supported on diphenylphosphinated poly(vinyl alcohol- co-ethylene) (DPP-PVA- co-PE) were synthesised by first reacting poly(vinyl alcohol- co-ethylene) with chlorodiphenylphosphine (ClPPh2) under basic conditions and then treating the product with Ni(OAc)2 followed by reduction with NaBH4. (DPP-PVA- co-PE)-NiNPs, a new metallised polymer, was then shown to efficiently catalyse Mizoroki–Heck reactions of aryl iodides, bromides or activated chlorides with olefins such as styrene and n-butyl acrylate in dimethylformamide. In contrast with other polymer-supported catal

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14

Karjalainen, Jaana, Osmo Hormi, and David Sherrington. "Efficient Polymer-Supported Sharpless Alkene Epoxidation Catalyst." Molecules 3, no. 8 (1998): 51–59. http://dx.doi.org/10.3390/30300051.

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15

Canali, Laetitia, Jaana K. Karjalainen, David C. Sherrington, and Osmo Hormi. "Efficient polymer-supported Sharpless alkene epoxidation catalyst." Chemical Communications, no. 1 (1997): 123–24. http://dx.doi.org/10.1039/a606954a.

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16

Meng, Fenghua, Guangqian Yu, and Baotong Huang. "Polymer-supported zirconocene catalyst for ethylene polymerization." Journal of Polymer Science Part A: Polymer Chemistry 37, no. 1 (1999): 37–46. http://dx.doi.org/10.1002/(sici)1099-0518(19990101)37:1<37::aid-pola5>3.0.co;2-o.

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17

KOBAYASHI, S., and S. NAGAYAMA. "ChemInform Abstract: A Polymer-Supported Scandium Catalyst." ChemInform 27, no. 34 (2010): no. http://dx.doi.org/10.1002/chin.199634069.

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18

Zhang, Jinyang, Xinru Wang, Xinyue Zhao, Honglei Chen, and Peng Jia. "Significantly Enhanced Acidic Oxygen Evolution Reaction Performance of RuO2 Nanoparticles by Introducing Oxygen Vacancy with Polytetrafluoroethylene." Polymers 17, no. 1 (2024): 59. https://doi.org/10.3390/polym17010059.

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The supported RuO2 catalysts are known for their synergistic and interfacial effects, which significantly enhance both catalytic activity and stability. However, polymer-supported RuO2 catalysts have received limited attention due to challenges associated with poor conductivity. In this study, we successfully synthesized the RuO2-polytetrafluoroethylene (PTFE) catalyst via a facile annealing process. The optimized nucleation and growth strategies enable the formation of RuO2 particles (~13.4 nm) encapsulating PTFE, establishing a conductive network that effectively addresses the conductivity i

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19

Sönmez Çelebi, Mutlu, and Ayşe Nur Yılmaz. "PVF-PPy Composite as Support Material for Facile Synthesis of Pt@PVF-PPy Catalyst and Its Electrocatalytic Activity Towards Formic Acid Oxidation." Journal of New Materials for Electrochemical Systems 21, no. 3 (2018): 157–62. http://dx.doi.org/10.14447/jnmes.v21i3.502.

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Preparation and characterization of a Pt-based catalyst supported on poly(vinylferrocenium)-poly(pyyrole) conducting polymer composite (Pt@PVF-PPy) was described for electrocatalytic oxidation of formic acid. Pt precursor was aqueous solution of K2PtCl4 and electrochemical and chemical reduction methods were compared for optimum catalyst performance. Other experimental parameters such as polymer film thickness and Pt loading were also optimized with respect to the formic acid oxidation peak current values. Scanning electron microscopy, cyclic voltammetry and chronoamperometry methods were used

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20

Pan, Yung-Tin, Lu Yu Chueh, and Yu-Wei Hsu. "Tungsten Oxide-Based Materials as Catalyst Support for Oxygen Evolution Reaction." ECS Meeting Abstracts MA2023-02, no. 42 (2023): 2096. http://dx.doi.org/10.1149/ma2023-02422096mtgabs.

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The high cost of iridium (Ir) is a major concern for the large scale deployment of polymer electrolyte membrane water electrolysis (PEMWE). To mitigate its impact, the usage of Ir on the anode must be significantly reduced. Down-sizing the catalyst particle is a straight forward strategy but requires the use of appropriate support materials to disperse and anchor fine Ir nanoparticles. We have investigated the use of tungsten oxide-based materials as support for the oxygen evolution reaction (OER) Ir and ruthenium (Ru) catalyst. The synthesis of nanostructured substoichiometric tungsten oxide

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21

Hodge, Philip, Roger J. Kell, Jianbiao Ma та Hugh Morris. "Polymer-Supported N-Alkyl-α ,α-diphenyl-L- prolinols as Catalysts forthe Alkylation of Aldehydes Using Diethylzinc." Australian Journal of Chemistry 52, № 11 (1999): 1041. http://dx.doi.org/10.1071/ch99081.

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Polystyrene beads containing N-alkyl-α,α-diphenyl-L-prolinol moieties (7) linked to the support via a long N-alkyl group, which also serves as a spacer chain, have been prepared. When used to catalyse the reactions of aldehydes with diethylzinc at 10 mole % in toluene at 20°C they afford the expected alcohols in 59–83% e.e. Where comparisons can be made with the results obtained with N-methyl-α,α-diphenyl-L-prolinol (3), the PS(polymer- supported) catalysts afford lower percentage e.e. values. Evidence is provided that this is due in part to the presence of the spacer chain, and in part becaus

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22

Mamajanov, Irena, Melina Caudan, and Tony Z. Jia. "Protoenzymes: The Case of Hyperbranched Polymer-Scaffolded ZnS Nanocrystals." Life 10, no. 8 (2020): 150. http://dx.doi.org/10.3390/life10080150.

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Enzymes are biological catalysts that are comprised of small-molecule, metal, or cluster catalysts augmented by biopolymeric scaffolds. It is conceivable that early in chemical evolution, ancestral enzymes opted for simpler, easier to assemble scaffolds. Herein, we describe such possible protoenzymes: hyperbranched polymer-scaffolded metal-sulfide nanocrystals. Hyperbranched polyethyleneimine (HyPEI) and glycerol citrate polymer-supported ZnS nanocrystals (NCs) are formed in a simple process. Transmission electron microscopy (TEM) analyses of HyPEI-supported NCs reveal spherical particles with

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23

Elfotoh, A. M. Abu, H. W. Chua, S. Murakami, K. Phomkeona, K. Shibatomi, and S. Iwasa. "A Novel Porous-Polymer-Supported Ru(II)-dm-Pheox Catalyst and its Application in Highly Efficient N-H Insertion Reactions." Advanced Materials Research 626 (December 2012): 411–14. http://dx.doi.org/10.4028/www.scientific.net/amr.626.411.

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A novel macroporous polymer supported ruthenium (II) dimethyl phenyloxazoline (Ru (II)-dm-Pheox) catalyst has been developed by crosslinking polymerizing monomeric Ru (II)-dm-Pheox complex with styrene and 1,4-divinyl benzene (DVB) in the presence of 2,2-azobisizobutyronitrile (AIBN) and water. We evaluated the catalytic activity of our novel porous catalyst in the intermolecular N-H insertion of the commercially available ethyl diazoacetate (EDA) with various amines. The polymer supported catalyst showed excellent catalytic reactivity by delivering the amino acid derivatives in high yields af

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24

Geng, Jieting, Youguo Shao, Feng Song, Feng Li, and Jing Hua. "Binary molybdenum-based catalyst for coordination polymerization of styrene." Journal of Elastomers & Plastics 49, no. 5 (2016): 408–21. http://dx.doi.org/10.1177/0095244316668930.

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Coordination polymerization of styrene (St) using molybdenum pentachloride supported by phosphite ligand in the presence of metal organic compound was studied for the first time. The types of phosphite and co-catalysts significantly affected the catalytic activity of the molybdenum (V) (Mo(V)) active center and the number-average molecular weight ( Mn) of the resultant polymer. Among the examined catalysts, tri(nonylphenyl)phosphite (TNPP) ligand and AlOPhCH3( i-Bu)2 as co-catalyst provided the polymer with highest yield (up to 87.1%), metallocene as co-catalyst provided the polymer with highe

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Hawker, C., J. Fréchet, B. Helms, S. Guillaudeu, Y. Xie, and M. McMurdo. "Multiarm Star Polymer-Supported Acid and Base Catalyst." Synfacts 2006, no. 01 (2005): 0086. http://dx.doi.org/10.1055/s-2005-921705.

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Girard, C., E. Önen, M. Aufort, S. Beauière, E. Samson, and J. Herscovici. "[3+2] Cycloaddition Using Reusable Polymer-Supported Catalyst." Synfacts 2006, no. 7 (2006): 0735. http://dx.doi.org/10.1055/s-2006-941900.

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27

Kitagawa, Takeshi, Toshiya Uozumi, Kazuo Soga, and Toshikazu Takata. "Syndiospecific propene polymerization with polymer-supported metallocene catalyst." Polymer 38, no. 3 (1997): 615–20. http://dx.doi.org/10.1016/s0032-3861(96)00535-6.

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28

Chou, Su-Chu, and Hung-Shan Weng. "Characterization of the polymer-supported phase transfer catalyst." Journal of Applied Polymer Science 39, no. 8 (1990): 1665–79. http://dx.doi.org/10.1002/app.1990.070390805.

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29

Wei, Fen, Jiaxiang Qiu, Yanbin Zeng, Zhimeng Liu, Xiaoxia Wang, and Guanqun Xie. "A Novel POP-Ni Catalyst Derived from PBTP for Ambient Fixation of CO2 into Cyclic Carbonates." Materials 16, no. 6 (2023): 2132. http://dx.doi.org/10.3390/ma16062132.

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The immobilization of homogeneous catalysts has always been a hot issue in the field of catalysis. In this paper, in an attempt to immobilize the homogeneous [Ni(Me6Tren)X]X (X = I, Br, Cl)-type catalyst with porous organic polymer (POP), the heterogeneous catalyst PBTP-Me6Tren(Ni) (POP-Ni) was designed and constructed by quaternization of the porous bromomethyl benzene polymer (PBTP) with tri[2-(dimethylamino)ethyl]amine (Me6Tren) followed by coordination of the Ni(II) Lewis acidic center. Evaluation of the performance of the POP-Ni catalyst found it was able to catalyze the CO2 cycloaddition

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30

Shin, Dongwon, SangJae Lee, Junu Bak, et al. "Iridium Nanosheet Catalysts Supported on Titanium Oxide for Oxygen Evolution Reaction in Polymer Electrolyte Membrane Water Electrolysis." ECS Meeting Abstracts MA2023-01, no. 36 (2023): 2016. http://dx.doi.org/10.1149/ma2023-01362016mtgabs.

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In order to overcome the disadvantage of intermittent production of renewable energy, Polymer electrolyte membrane water electrolysis(PEMWE), which is one of the technologies of producing hydrogen by electrolyzing water, is attracting attention. For the commercialization of PEMWE, it is important to reduce usage of iridium(Ir) for oxygen evolution reaction(OER) in the anode electrode. Many studies have been reported to reduce the amount of iridium used by developing a catalyst with higher performance than the iridium nanoparticle catalyst used as a commercial catalyst. As one of the strategies

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31

Sun, L., C. C. Hsu, and D. W. Bacon. "Polymer-supported Ziegler–Natta catalysts. I. A preliminary study of catalyst synthesis." Journal of Polymer Science Part A: Polymer Chemistry 32, no. 11 (1994): 2127–34. http://dx.doi.org/10.1002/pola.1994.080321115.

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32

Boettcher, Tim, Sasho Stojkovikj, Prashant Khadke, et al. "Electrodeposition of palladium-dotted nickel nanowire networks as a robust self-supported methanol electrooxidation catalyst." Journal of Materials Science 56, no. 22 (2021): 12620–33. http://dx.doi.org/10.1007/s10853-021-06088-6.

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Abstract Mass activity and long-term stability are two major issues in current fuel cell catalyst designs. While supported catalysts normally suffer from poor long-term stability but show high mass activity, unsupported catalysts tend to perform better in the first point while showing deficits in the latter one. In this study, a facile synthesis route towards self-supported metallic electrocatalyst nanoarchitectures with both aspects in mind is outlined. This procedure consists of a palladium seeding step of ion track-etched polymer templates followed by a nickel electrodeposition and template

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Jo, Yoo-Jin, Won Suk Jung, and Boyoung Lim. "Review of Electro-catalysts Supported by Metal Oxides for Electrochemical Oxygen Reduction Reaction." Korean Journal of Metals and Materials 61, no. 4 (2023): 231–41. http://dx.doi.org/10.3365/kjmm.2023.61.4.231.

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Global warming and air pollution have forced greater attention to new energy sources to replace fossil fuels. Among several eco-friendly energy sources, polymer electrolyte membrane fuel cells have been increasingly investigated since they have zero emissions, high energy density, and high energy efficiency. Carbon-supported Pt catalyst is generally used for the cathodic catalyst in polymer electrolyte membrane fuel cells. However, Pt/C catalysts corrode under start-up/shut-down conditions. Pt agglomeration, separation, and loss can occur due to the carbon corrosion, which results in a rapid p

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Stepacheva, Antonina A., Mariia E. Markova, Yury V. Lugovoy, Yury Yu Kosivtsov, Valentina G. Matveeva, and Mikhail G. Sulman. "Plant-Biomass-Derived Carbon Materials as Catalyst Support, A Brief Review." Catalysts 13, no. 4 (2023): 655. http://dx.doi.org/10.3390/catal13040655.

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Carbon materials are widely used in catalysis as effective catalyst supports. Carbon supports can be produced from coal, organic precursors, biomass, and polymer wastes. Biomass is one of the promising sources used to produce carbon-based materials with a high surface area and a hierarchical structure. In this review, we briefly discuss the methods of biomass-derived carbon supported catalyst preparation and their application in biodiesel production, organic synthesis reactions, and electrocatalysis.

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Liu, Tai Qi, Ning Gao, Yue Wang, Liang Fa Gong, and You Liang Hu. "A Novel Polymer Supported Catalyst for Preparation of Sydiopolystyrene." Advanced Materials Research 788 (September 2013): 178–81. http://dx.doi.org/10.4028/www.scientific.net/amr.788.178.

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Poly (styrene-co-acrylonitrile) supported TiCl4 was prepared and characterized. IR analysis shows that the absorption of the acronitrile group shifted from 2233cm-1 to 2277cm-1 after its coordination to TiCl4. It is found that this catalyst shows a much higher catalytic activity than that of TiCl4 in the preparation of sydiopolystyrene, especially, it can be used to prepare a styrene rich poly (styrene-co-ethylene), the resulted poly (styrene-co-ethylene) is a crystalline polymer shown a Tm much lower than that of a homo sydiopolystyrene. The molecular simulation result shows that the coordina

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Schwarz, Julia Felicitas, Thorsten Holtrichter-Rößmann, Claus Günter Liedtke, Diddo Diddens, and Christian Paulik. "Modified Magnesium Alkyls for Ziegler–Natta Catalysts." Catalysts 12, no. 9 (2022): 973. http://dx.doi.org/10.3390/catal12090973.

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Magnesium alkyls such as butyl octyl magnesium and butyl ethyl magnesium are used as precursors for highly active and water-free magnesium chloride support materials for Ziegler–Natta catalysts. These alkyls show a high viscosity in hydrocarbon solvents which negatively affect their industrial application. Density functional theory (DFT) calculations supported the hypothesis that magnesium alkyls can form oligomeric chain structures responsible for the high viscosity. Heterocumulenes such as isocyanates, isothiocyanates and carbodiimides were studied as additives reducing the viscosity, suppor

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Culica, Madalina Elena, Kornela Kasperczyk, Raluca Ioana Baron, et al. "Recyclable Polymer-Supported N-Hydroxyphthalimide Catalysts for Selective Oxidation of Pullulan." Materials 12, no. 21 (2019): 3585. http://dx.doi.org/10.3390/ma12213585.

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This paper proposes a convenient route to oxidize the –CH2–OH groups in the water-soluble pullulan, using a new catalytic polymer-supported N-hydroxyphthalimide (NHPI) immobilized on polystyrene. The protocol involves the presence of sodium hypochlorite and sodium bromide. The conversion is possible at room temperature, atmospheric pressure, and pH = 10. The characterization of both the catalysts and oxidized pullulan was done using NMR and FTIR methods. Using polyelectrolyte titration with end-point indication by means of a particle-charge detector (PCD), we were able to assess the degree of

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38

Saputra, Moh Rifki, Erwin Abdul Rahim, Husain Sosidi, and Ni Ketut Sumarni. "Siklisasi Sitronelal Menggunakan Polimer Penyangga Katalis H2SO4 Berbahan Dasar Eugenol." KOVALEN: Jurnal Riset Kimia 7, no. 1 (2021): 77–82. http://dx.doi.org/10.22487/kovalen.2021.v7.i1.13660.

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Research on citronellal cyclization using a polymer based on eugenol supported H2SO4 catalyst has been carried out. The study aim was to determine the ratio of the addition of polymer based-eugenol supported H2SO4 catalyst used to produce the highest isopulegol. Citronellal cyclization was carried out using variations of catalyst concentration (1, 2, 3, 4, and 5%) and reaction time (30, 60, and 90 minutes). The results have obtained a yield of 50.67% found in the catalyst concentration of 1% and 90 minutes reflux time. From the results of GC-MS analysis, 29 compounds were read and among them i

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Talgatov, Eldar, Assemgul Auyezkhanova, Alima Zharmagambetova, et al. "The Effect of Polymer Matrix on the Catalytic Properties of Supported Palladium Catalysts in the Hydrogenation of Alkynols." Catalysts 13, no. 4 (2023): 741. http://dx.doi.org/10.3390/catal13040741.

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Palladium catalysts were obtained by the adsorption method involving the sequential deposition of polyvinylpyrrolidone (PVP) and then palladium ions on a modified zinc oxide surface without high-temperature calcination and reduction stages. The immobilized PVP-palladium catalysts were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET), infrared spectroscopy (IRS), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and elemental analysis methods. It was found that the introduction of polymer into the cat

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Fujimura, Kojiro, Makoto Ouchi, and Mitsuo Sawamoto. "A thermoresponsive polymer supporter for concerted catalysis of ferrocene with a ruthenium catalyst in living radical polymerization: high activity and efficient removal of metal residues." Polymer Chemistry 6, no. 45 (2015): 7821–26. http://dx.doi.org/10.1039/c5py01063b.

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A thermoresponsive polymer-supported catalyst consisting of a ruthenium (Ru) main catalyst and a ferrocene (Fc) cocatalyst was designed to realize both high activity and efficient removal of metal residues.

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Zhang, Sheng, Peng Kang, Mohammed Bakir, Alexander M. Lapides, Christopher J. Dares, and Thomas J. Meyer. "Polymer-supported CuPd nanoalloy as a synergistic catalyst for electrocatalytic reduction of carbon dioxide to methane." Proceedings of the National Academy of Sciences 112, no. 52 (2015): 15809–14. http://dx.doi.org/10.1073/pnas.1522496112.

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Developing sustainable energy strategies based on CO2 reduction is an increasingly important issue given the world’s continued reliance on hydrocarbon fuels and the rise in CO2 concentrations in the atmosphere. An important option is electrochemical or photoelectrochemical CO2 reduction to carbon fuels. We describe here an electrodeposition strategy for preparing highly dispersed, ultrafine metal nanoparticle catalysts on an electroactive polymeric film including nanoalloys of Cu and Pd. Compared with nanoCu catalysts, which are state-of-the-art catalysts for CO2 reduction to hydrocarbons, the

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Ishihara, K., H. Yamamoto, Y. Nakamura, T. Maki, and X. Wang. "A Polymer-Supported Fe-Zr Catalyst for Dehydrative Esterfication." Synfacts 2006, no. 11 (2006): 1186. http://dx.doi.org/10.1055/s-2006-949405.

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Lee, Y. S., H. J. Yoon, S. M. Lee, et al. "Polymer-Supported Gadolinium Triflate as a Lewis Acid Catalyst." Synfacts 2008, no. 7 (2008): 0770. http://dx.doi.org/10.1055/s-2008-1078434.

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CANALI, L., J. K. KARJALAINEN, D. C. SHERRINGTON, and O. HORMI. "ChemInform Abstract: Efficient Polymer-Supported Sharpless Alkene Epoxidation Catalyst." ChemInform 28, no. 29 (2010): no. http://dx.doi.org/10.1002/chin.199729032.

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Okuno, Yoshinori, Shigeki Isomura, Takahiro Kamakura, et al. "Dimethylaminopyridine-Supported Graft Polymer Catalyst and its Flow System." ChemSusChem 8, no. 10 (2015): 1711–15. http://dx.doi.org/10.1002/cssc.201500092.

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Okuno, Yoshinori, Shigeki Isomura, Takahiro Kamakura, et al. "Dimethylaminopyridine-Supported Graft Polymer Catalyst and its Flow System." ChemSusChem 8, no. 10 (2015): 1631. http://dx.doi.org/10.1002/cssc.201500420.

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Mteza, S. B. "Polymer supported Z-N catalysts for C2h4-polymerization,I: development Catalyst preparation Method." Tanzania Journal of Engineering and Technology 18, no. 2 (1994): 109–22. http://dx.doi.org/10.52339/tjet.v18i2.178.

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Conk, Richard J., Steven Hanna, Jake X. Shi, et al. "Catalytic deconstruction of waste polyethylene with ethylene to form propylene." Science 377, no. 6614 (2022): 1561–66. http://dx.doi.org/10.1126/science.add1088.

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The conversion of polyolefins to monomers would create a valuable carbon feedstock from the largest fraction of waste plastic. However, breakdown of the main chains in these polymers requires the cleavage of carbon–carbon bonds that tend to resist selective chemical transformations. Here, we report the production of propylene by partial dehydrogenation of polyethylene and tandem isomerizing ethenolysis of the desaturated chain. Dehydrogenation of high-density polyethylene with either an iridium-pincer complex or platinum/zinc supported on silica as catalysts yielded dehydrogenated material con

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Alkayal, Nazeeha S., Manal Ibrahim, Nada Tashkandi, and Maha M. Alotaibi. "Efficient Reduction in Methylene Blue Using Palladium Nanoparticles Supported by Melamine-Based Polymer." Materials 16, no. 17 (2023): 5887. http://dx.doi.org/10.3390/ma16175887.

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In this work, palladium nanoparticles, supported by polyaminals (Pd@PAN-NA), were synthesized via a reverse double solvent approach and used as a nano catalyst. The thermogravimetric and the elemental analysis revealed that the catalyst had good dispersity and improved thermal stability. The catalytic activity of the prepared Pd@PAN-NA catalyst was studied for a methylene blue chemical reaction in the presence of NaBH4 as a reducing agent. The effect of the catalyst dose, pH, and dye initial concentration were examined to optimize the chemical reduction conditions. The prepared catalyst Pd@PAN

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Romanazzi, Giuseppe, Piero Mastrorilli, Mario Latronico, Matilda Mali, Angelo Nacci, and Maria Michela DelľAnna. "Catalytic activities of heterogeneous catalysts obtained by copolymerization of metal-containing 2-(acetoacetoxy)ethyl methacrylate." Open Chemistry 16, no. 1 (2018): 520–34. http://dx.doi.org/10.1515/chem-2018-0055.

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AbstractAmong the synthetic strategies commonly used for supporting a metal complex onto an organic polymer in order to obtain an heterogenous catalyst, a valid choice is to synthesize a metal containing monomer (MCM), which can subsequently be subjected to polymerization with suitable comonomers and crosslinkers, achieving a supported transition metal catalyst as a metal-containing polymer (MCP). In this context, during the last two decades, we explored the use of 2-(acetoacetoxy)ethyl methacrylate (HAAEMA) as a ligand to prepare several MCMs for the relevant MCPs. In this review we summarize

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