4.6 Article

Exfoliated Layered Metal Oxide-Supported Ruthenium Catalysts for Base-Free Oxidation of 5-Hydroxymethylfurfural into a Renewable Bioplastic Precursor

Related references

Note: Only part of the references are listed.
Article Chemistry, Physical

Sulfate-loaded layered double oxide: A bifunctional adsorbent for simultaneous purification of metal ion and anionic dye

Ping Zhang et al.

Summary: This study presents the preparation of sulfate-modified LDO through a simple method, showing good performance in the removal of Acid Orange 7 and Cu(II). In the binary system of AO7-Cu(II), the removal capacity of Cu(II) was significantly enhanced, while slightly inhibited for AO7 due to competitive adsorption.

APPLIED CLAY SCIENCE (2022)

Article Engineering, Chemical

Oxidation of 5-methoxymethylfurfural to 2, 5-furandicarboxylic acid over Ru/hydroxyapatite catalyst in water

Gaobo Lin et al.

Summary: This study reports an efficient oxidation method of converting 5-methoxymethylfurfural (MMF) to FDCA using a homemade Ru/hydroxyapatite (Ru/HAP) catalyst. The reaction can achieve complete conversion of MMF and a high molar yield of FDCA under mild reaction conditions. The effects of process parameters were systematically studied and optimized. This work may provide a feasible MMF-mediated route for large-scale industrial FDCA production.

CHEMICAL ENGINEERING SCIENCE (2022)

Article Chemistry, Multidisciplinary

Boosting the Acid Sites and Lattice Oxygen Activity of the Fe-Cu Catalyst for One-Pot Producing 2,5-Diformylfuran from Fructose

Wenlong Jia et al.

Summary: A novel binary phosphate catalyst FeCuPOx was developed for the high-yield synthesis of 2,5-diformylfuran (DFF) from fructose, exhibiting high catalytic activity and stability; the catalyst has the potential for industrial production of DFF from fructose.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2022)

Article Environmental Sciences

Etherification of glycerol into short-chain polyglycerols over MgAl LDH/CaCO3 nanocomposites as heterogeneous catalysts to promote circular bioeconomy

Rujeeluk Khumho et al.

Summary: This study focuses on upgrading glycerol from biodiesel plants into short-chain polyglycerols, which are used as intermediates for producing emulsifiers in consumer products. The researchers used a nanocomposite catalyst synthesized from mixed oxides to perform the etherification of glycerol. The results showed that the nanocomposite catalyst exhibited excellent catalytic performance and selectivity.

CHEMOSPHERE (2022)

Article Energy & Fuels

Selective synthesis of 5-hydroxymethylfurfural over natural rubber-derived carbon/silica nanocomposites with acid-base bifunctionality

Satit Yousatit et al.

Summary: In this study, a mesoporous carbon/silica (MCS) nanocomposite was synthesized as a catalyst support for the production of 5-hydroxymethylfurfural (HMF) from glucose. By modifying the MCS surface, a series of acid-base catalysts were developed, and the acid-base properties could be tuned by adjusting the content of sulfonic acid and amino propyl groups. The developed MCS-SO3H-NH2 catalyst showed high HMF yield and selectivity when compared to other catalyst systems.
Article Chemistry, Physical

Intercalation-induced partial exfoliation of NiFe LDHs with abundant active edge sites for highly enhanced oxygen evolution reaction

Hanwen Xu et al.

Summary: The partially exfoliated citrate-intercalated NiFe LDHs exhibit a unique structure that enhances intrinsic catalytic activity and active edge sites for oxygen evolution reaction. The optimal sample shows a smaller overpotential mainly due to the combined effect of enlarged interlayer space and partial exfoliation.

JOURNAL OF COLLOID AND INTERFACE SCIENCE (2022)

Article Chemistry, Physical

Fabrication of carbon doped Cu-based oxides as superior NH3-SCR catalysts via employing sodium dodecyl sulfonate intercalating CuMgAl-LDH

Xianfeng Wu et al.

Summary: In this work, a sodium dodecyl sulfonate (SDSO) intercalated CuMgAl-Layered double hydroxide (CuMgAlSDSO-LDH) catalyst was fabricated and evaluated for low temperature selective catalytic reduction of NO with NH3 (NH3-SCR). The results showed that the carbon content from SDSO significantly affected the denitrification activity of the catalyst, and the successful intercalation of SDSO was crucial for the catalytic performance. Characterization analysis revealed that the excellent performance of the CuMgAl-SDSO-LDO catalyst could be attributed to higher dispersion and appropriate valence state distribution of Cu, which were closely related to the moderate carbon doping content, resulting in outstanding SCR performance.

JOURNAL OF CATALYSIS (2022)

Article Polymer Science

Effects of Modified Layered Double Hydroxides on the Thermal Degradation and Combustion Behaviors of Intumescent Flame Retardant Polyethylene Nanocomposites

Tiefeng Zhang et al.

Summary: The flame retardant effectiveness of Mg-Al LDH in polyethylene (PE) was improved by introducing 2-carboxy ethyl (phenyl) phosphinic acid (CEPPA) as a flame retardant modifier to prepare CEPPA-intercalated LDH (CLDH), which was then dispersed in PE through melt blending. The compact and fully developed char of the PE/IFR/CLDH composites were mainly attributed to the reactions between CLDH and the intumescent flame retardant (IFR), enhancing the flame retardancy of the composites.

POLYMERS (2022)

Article Nanoscience & Nanotechnology

Leveraging Pt/Ce1-xLaxO2-? To Elucidate Interfacial Oxygen Vacancy Active Sites for Aerobic Oxidation of 5-Hydroxymethylfurfural

Weiping Yang et al.

Summary: The La3+-doped three-dimensionally ordered macroporous CeO2 (3D-Ce1-xLaxO2-delta) were synthesized and used as supports for Pt nanoparticles. The La-?(-Ce)2 sites exhibited superior charge transfer ability and acted as trapping centers for Pt nanoparticles. The Pt/3D-Ce0.9La0.1O2-delta catalyst with the highest number of Pt delta+/La-?(-Ce)2 sites showed the best catalytic performance in the liquid-phase aerobic oxidation of 5-hydroxymethylfurfural.

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Geochemistry & Geophysics

Insight into the effect of SO42- on the precipitation and solubility of ferric arsenate in acidic solutions: Implication for arsenic mobility and fate

Xu Ma et al.

Summary: This study systematically investigates the influence of sulfate on the precipitation and stability of ferric arsenate phase, as well as its underlying mechanisms. The results show that sulfate delays the removal of As and Fe while enhancing the solubility of solid ferric arsenate. Additionally, sulfate promotes the growth rate and settling of ferric arsenate, leading to an enlarged aggregate size. Sulfate is incorporated into the structure of ferric arsenate by forming a solid solution, and its presence plays a significant role in the mobilization and fate of As in acidic systems.

CHEMICAL GEOLOGY (2022)

Article Chemistry, Multidisciplinary

Enhanced Basicity of MnOx-Supported Ru for the Selective Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid

Priyanka Pal et al.

Summary: The present study focuses on the development of a stable basic MnOx support for the efficient oxidation of HMF to FDCA in water without the need for an external base. The RuMn-2 catalyst, with a high number of basic sites and a high dispersion of Ru on the surface of MnOx, showed excellent performance in the oxidation reaction. The epsilon-MnO2 phase in the catalyst played a vital role in the reaction.

CHEMSUSCHEM (2022)

Article Engineering, Environmental

Basic intensity regulation of layered double oxide for CO2 adsorption process at medium temperature in coal gasification

Binxia Wang et al.

Summary: This study develops a strategy to regulate the basic sites of adsorbents, improving the adsorption capacity of CO2 at medium temperature in the industrial coal gasification process.

CHEMICAL ENGINEERING JOURNAL (2022)

Article Chemistry, Applied

5-Hydroxymethylfurfural Oxidation Over Platinum Supported on Acai Seed Coal for Synthesis of 2,5-Furandicarboxylic Acid

Samira M. N. de Assumpcao et al.

Summary: In this study, the oxidation of HMF to FDCA over Pt catalysts supported on acai coal in an alkaline medium was investigated. The high conversion of HMF and the high yield of FDCA (93.6%) were attributed to the high dispersion of Pt on the support and the presence of oxygenated functional groups on the coal surface.

BIOINTERFACE RESEARCH IN APPLIED CHEMISTRY (2022)

Article Chemistry, Applied

A highly efficient and reusable Ru-NaY catalyst for the base free oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic acid

Prabu Kandasamy et al.

Summary: This study presents a Ru-NaY nanocatalyst for the oxidation of HMF to FDCA, showing superior catalytic activity under base free conditions and good recyclability. High metal dispersion and small size of Ru nanoparticles play vital roles in the reaction. Acidic hydroxyl groups in the supercage and higher amount of metallic Ru degrees are also responsible for the high yield and productivity of FDCA.

CATALYSIS TODAY (2021)

Article Engineering, Environmental

High-efficiency water purification for methyl orange and lead(II) by eco-friendly magnetic sulfur-doped graphene-like carbon-supported layered double oxide

Ping Zhang et al.

Summary: The study demonstrates the successful conversion of organic layered double hydroxide into MG/S-LDO for water purification, showing outstanding adsorption performance in removing methyl orange and lead. Furthermore, MG/S-LDO exhibits excellent reusability and eco-friendliness, making it a promising adsorbent for wastewater treatment applications.

JOURNAL OF HAZARDOUS MATERIALS (2021)

Review Chemistry, Applied

2,5-Furandicarboxylic acid production via catalytic oxidation of 5-hydroxymethylfurfural: Catalysts, processes and reaction mechanism

Chunlin Chen et al.

Summary: The conversion of biomass into value-added chemicals, particularly using 5-hydroxymethylfurfural as a key platform molecule, has garnered significant attention. The oxidation product 2,5-furandicarboxylic acid shows promise as an alternative to petroleum-based terephthalic acid for the synthesis of biodegradable plastics.

JOURNAL OF ENERGY CHEMISTRY (2021)

Article Chemistry, Physical

Review of Sulfur Promotion Effects on Metal Oxide Catalysts for NOx Emission Control

Renyi Xie et al.

Summary: This review summarizes recent advances in the sulfur promotion roles of metal oxide catalysts for selective catalytic reduction of NOx with ammonia (NH3-SCR) technology. It discusses the effects of sulfation treatment on sulfate species, proposes a comprehensive overview of reaction mechanisms over sulfated catalysts, and explores methods to construct appropriate acidity of sulfated metal oxides. The article also deliberates over specific catalysts and suggests the potential of other acidification methods to improve surface acidity.

ACS CATALYSIS (2021)

Article Chemistry, Physical

Efficient oxidation of 5-Hydroxymethylfurfural to 2,5-furandicarboxylic acid over FeNPs@NH2-SBA-15 catalyst in water

S. Anbu Anjugam Vandarkuzhali et al.

Summary: The study demonstrated the synthesis of Fe nanoparticles on NH2-functionalized SBA-15 and their use as a catalyst for the selective oxidation of HMF to FDCA. The catalyst showed high efficiency under low oxygen pressure, with an FDCA yield of up to 89.4% at 100% HMF conversion, and it exhibited good recyclability with stability over multiple cycles. This protocol provides an alternative catalytic pathway for the synthesis of value-added chemicals and intermediates derived from biomass.

MOLECULAR CATALYSIS (2021)

Article Nanoscience & Nanotechnology

Pt Nanoparticles on ZSM-5 Nanoparticles for Base-Free Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid

Saros Salakhum et al.

Summary: A method for the selective oxidation of HMF to FDCA and its derivatives was achieved using highly dispersed Pt nanoparticles supported on alkaline-exchanged hierarchical ZSM-5 nanoparticles. By conducting the reaction in a base-free aqueous-phase system, a high HMF conversion rate of 100% and FDCA selectivity of 80% were achieved.

ACS APPLIED NANO MATERIALS (2021)

Review Chemistry, Multidisciplinary

Mixed Metal Oxide by Calcination of Layered Double Hydroxide: Parameters Affecting Specific Surface Area

Su-Bin Lee et al.

Summary: Mixed metal oxide (MMO) obtained from the calcination of layered double hydroxide (LDH) can achieve high specific surface area and porosity, with Mg-Al components generally resulting in higher specific surface area. The calcination temperature within the range of 300-600 degrees C leads to high surface area, while the presence of pore developing agent narrows the pore size distribution without significantly increasing the specific surface area of MMO.

NANOMATERIALS (2021)

Article Chemistry, Physical

Modification of Carbon Black with Hydrogen Peroxide for High Performance Anode Catalyst of Direct Methanol Fuel Cells

Yu-Wen Chen et al.

Summary: Using H2O2 to modify carbon black can increase the amount of functional groups on the surface, thereby increasing the metal dispersion and decreasing metal particle size. NaH2PO2 as a reducing agent can suppress the growth of metal particles. The best modified carbon black catalyst is the one modified with 30% H2O2, and the methanol oxidation activity of the catalyst is mainly related to the particle size of PtRu metal, rather than the surface area and conductivity of carbon black.

MATERIALS (2021)

Article Chemistry, Multidisciplinary

Aerobic Oxidation of 5-Hydroxymethylfurfural into 2,5-Furandicarboxylic Acid over Gold Stabilized on Zirconia-Based Supports

Abdallah I. M. Rabee et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2020)

Article Multidisciplinary Sciences

A chemically stabilized sulfur cathode for lean electrolyte lithium sulfur batteries

Chao Luo et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2020)

Article Chemistry, Multidisciplinary

Carbon Support with Tunable Porosity Prepared by Carbonizing Chitosan for Catalytic Oxidation of 5-Hydroxylmethylfurfural

Hyejin Yu et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2019)

Article Chemistry, Multidisciplinary

Efficient aerobic oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid on Ru/C catalysts

Lufan Zheng et al.

SCIENCE CHINA-CHEMISTRY (2017)

Review Chemistry, Physical

Exfoliation of layered double hydroxide solids into functional nanosheets

Ning Mao et al.

APPLIED CLAY SCIENCE (2017)

Article Materials Science, Multidisciplinary

Ultrasonic synthesis of supported palladium nanoparticles for room-temperature Suzuki-Miyaura coupling

Jiazhe Li et al.

JOURNAL OF MATERIALS SCIENCE (2016)

Article Chemistry, Multidisciplinary

Basicity-Tuned Hydrotalcite-Supported Pd Catalysts for Aerobic Oxidation of 5-Hydroxymethyl-2-furfural under Mild Conditions

Yanbing Wang et al.

ACS SUSTAINABLE CHEMISTRY & ENGINEERING (2016)

Article Chemistry, Physical

Sulfated Nanocapsular Aluminas: Controlling their Bronsted and Lewis Acidity

Jaime S. Valente et al.

JOURNAL OF PHYSICAL CHEMISTRY C (2009)