Synthesis and Physicochemical Properties of Hypercrosslinked Polysterene Restricted-Access Materials

Popov, A. Yu.; Blinnikova, Z. K.; Tsyurupa, M. P.; Davankov, V. A.

doi:10.1134/s1560090418050123

Cited by 10 publications

(4 citation statements)

References 6 publications

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“…This new class of microporous materials presents high-performance characteristics [29]. Due its multiple advantages, such as a variety of synthesis methods, ease of functionalization, large specific surface area (SSA), use of inexpensive reagents [30], mild synthesis conditions, and chemical and thermal stability, HPS is increasingly attracting research interests [31]. HPS has become a universal platform for the synthesis of nanoporous materials with specified properties, which, in addition to traditional application in chromatography, gas adsorption, and sorbents for water treatment, have begun to be used in drug delivery systems, sensors, and heterogeneous catalysts [27].…”

Section: Hypercrosslinked Polystyrene (Hps): Synthesis Properties And...mentioning

confidence: 99%

An Overview of Heterogeneous Catalysts Based on Hypercrosslinked Polystyrene for the Synthesis and Transformation of Platform Chemicals Derived from Biomass

Manaenkov,

Nikoshvili,

Bykov

et al. 2023

Molecules

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Platform chemicals, also known as chemical building blocks, are substances that serve as starting materials for the synthesis of various value-added products, which find a wide range of applications. These chemicals are the key ingredients for many fine and specialty chemicals. Most of the transformations of platform chemicals are catalytic processes, which should meet the requirements of sustainable chemistry: to be not toxic for humans, to be safe for the environment, and to allow multiple reuses of catalytic materials. This paper presents an overview of a new class of heterogeneous catalysts based on nanoparticles of catalytically active metals stabilized by a polymer matrix of hypercrosslinked polystyrene (HPS). This polymeric support is characterized by hierarchical porosity (including meso- and macropores along with micropores), which is important both for the formation of metal nanoparticles and for efficient mass transfer of reactants. The influence of key parameters such as the morphology of nanoparticles (bimetallic versus monometallic) and the presence of functional groups in the polymer matrix on the catalytic properties is considered. Emphasis is placed on the use of this class of heterogeneous catalysts for the conversion of plant polysaccharides into polyols (sorbitol, mannitol, and glycols), hydrogenation of levulinic acid, furfural, oxidation of disaccharides, and some other reactions that might be useful for large-scale industrial processes that aim to be sustainable. Some challenges related to the use of HPS-based catalysts are addressed and multiple perspectives are discussed.

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Section: Hypercrosslinked Polystyrene (Hps): Synthesis Properties And...mentioning

confidence: 99%

An Overview of Heterogeneous Catalysts Based on Hypercrosslinked Polystyrene for the Synthesis and Transformation of Platform Chemicals Derived from Biomass

Manaenkov,

Nikoshvili,

Bykov

et al. 2023

Molecules

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“…The organic phases comprised of STY, DVB, 2 wt.%BPO, and porogen at a monomer/porogen volumetric ratio of 1.5-3 v/v (see Table 2). Samples of the HPS series were synthesized by the cross-linking of the copolymers with monochlorodimethylether using 1 mole of ether to STY unit, according to the procedure described elsewhere [34,35]. The degree of cross-linking estimates was 200%.…”

Section: Synthesis and Characterization Of Polymeric Supportsmentioning

confidence: 99%

“…For all the synthesized polymers, the weight-swelling ratio (Q w ) in toluene (the solvent used for hydrogenation reactions) was found, according to the procedure described elsewhere [34]. In a typical measurement, about 1.5 mL of polymer swollen in toluene was placed in a porous-bottom tube, which was then sealed; the interbead liquid was removed by centrifugation at 3000 rpm for 5 min.…”

Section: Synthesis and Characterization Of Polymeric Supportsmentioning

confidence: 99%

Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity

et al. 2022

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This work is addressing the selective hydrogenation of alkynols over hybrid catalysts containing Pd-nanoparticles, within newly synthesized hyper-cross-linked polystyrenes (HPS). Alkynols containing C5, C10, and C20 with a terminal triple bond, which are structural analogues or direct semi-products of fragrant substances and fat-soluble vitamins, have been studied. Selective hydrogenation was carried out in a batch mode (ambient hydrogen pressure, at 90 °C, in toluene solvent), using hybrid Pd catalysts with low metal content (less than 0.2 wt.%). The microporous and mesoporous HPS were both synthesized and used as supports in order to address the influence of porosity. Synthesized catalysts were shown to be active and selective: in the case of C5, hydrogenation selectivity to the target product was more than 95%, at close to complete alkynol conversion. Mesoporous catalysts have shown some advantages in hydrogenation of long-chain alkynols.

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“…Изучена сорбция фенилкарбоновых кислот (в том числе БК) новым полимером на основе стирола и дивинилбензола из водных растворов с концентрациями на уровне 10 -4 моль/л [51]. Полученные сорбенты не поглощают альбумин и рекомендуются для сорбции фенилкарбоновых кислот из биосред.…”

Section: сорбция полимерными сорбентамиunclassified

Benzoic and Salicylic acids concentration and determination in food and water mediums

Sukhanov¹,

Savvina²,

Кушнир³

et al. 2018

АиК

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Приведен обзор литературы по современным методам пробоподготовки и определения бензойной (БК) и салициловой кислот (СК) в различных водных средах и продуктах питания. Обсуждается применение органо-неорганических полимерных композиционных материалов на основе глин (бентонит, монтмориллонит, вермикулиты), коммерческих гранулированных активных углей, биоуглей, полимерных сорбентов природного и синтетического происхождения для концентрирования БК и СК из водных сред, в том числе из сточных вод и почвенных растворов. Описаны схемы получения и модифицирования сорбентов поверхностно-активными веществами, наночастицами и катионами металлов. Приведены значения предельной сорбции, уровни концентраций сорбируемых соединений, время достижения сорбционного равновесия, а также способы определения в концентратах сорбатов. Изложены способы выделения, изолирования, концентрирования или экстракции БК и СК из продуктов питания (алкогольные и безалкогольные напитки, молоко и молочные продукты, сиропы, крупы, овощи, фрукты и т.д.). Для определения БК и СК в различных объектах рекомендуются хроматографические (высокоэффективная жидкостная, ионная, газовая, тонкослойная хроматография), электрохимические, спектрометрические методы анализа и капиллярный электрофорез. Приведены условия детектирования аналитов, применяемые подвижные и неподвижные фазы, условия элюирования, составы фоновых растворов, характеристики электрохимического определения, а также пределы обнаружения в различных матрицах, содержащих БК и СК. Ключевые слова: бензойная кислота, салициловая кислота, концентрирование, определение, пищевые продукты, водные среды.

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Synthesis and Physicochemical Properties of Hypercrosslinked Polysterene Restricted-Access Materials

Cited by 10 publications

References 6 publications

An Overview of Heterogeneous Catalysts Based on Hypercrosslinked Polystyrene for the Synthesis and Transformation of Platform Chemicals Derived from Biomass

An Overview of Heterogeneous Catalysts Based on Hypercrosslinked Polystyrene for the Synthesis and Transformation of Platform Chemicals Derived from Biomass

Hybrid Pd-Nanoparticles within Polymeric Network in Selective Hydrogenation of Alkynols: Influence of Support Porosity

Benzoic and Salicylic acids concentration and determination in food and water mediums

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