Results 51 to 60 of about 5,911 (183)

Electrochemical Three‐Component Synthesis of Heteroaryl Sulfonates

European Journal of Organic Chemistry, EarlyView.
An electrochemical, metal‐free three‐component strategy for direct C(sp2)─H sulfonation of electron‐rich heteroarenes using SO2 and alcohols is described. Utilizing inexpensive graphite electrodes and practical SO2 stock solutions under mild conditions, this method provides straightforward access to heteroaryl sulfonates from simple building blocks ...
Po‐Chung Chien, Harald Kelm, Georg Manolikakes   +2 more
wiley   +1 more source

5-Phenyl-10,15,20-Tris(4-sulfonatophenyl)porphyrin: Synthesis, Catalysis, and Structural Studies

Molecules, 2018
A convenient protocol for the preparation of 5-phenyl-10,15,20-tris(4-sulfonatophenyl)porphyrin, a water-soluble porphyrin with unique aggregation properties, is described. The procedure relies on the one-pot reductive deamination of 5-(4-aminophenyl)-10,
Aitor Arlegui, Zoubir El-Hachemi, Joaquim Crusats, Albert Moyano   +3 more
doaj   +1 more source

Synthesis of Poly(Itaconate)s With High Monomer Conversion Applying Emulsion Polymerization

Journal of Polymer Science, Volume 63, Issue 6, Page 1284-1296, 15 March 2025.
Itaconic acid and its derivatives are a promising and bio‐based substitute for oil‐based polymers such as acrylates. In this study, the optimization of polymerization of itaconic acid esters is described by applying emulsion polymerization leading to high reaction conversions and low residual monomer contents. ABSTRACT Itaconic acid and its derivatives
S. Charlotte Fischer von Mollard, Nico Ueberschaar, Martin Schreiber, Frank Kamphuis, Stefan Zechel, Martin D. Hager   +5 more
wiley   +1 more source

Acid Sulfite Pulping of Hemp: Effects of Processing Conditions on Lyocell Pulp Quality

Journal of Polymer Science, EarlyView.
Industrial hemp is emerging as a promising renewable source for next‐generation textile fibers. This study evaluates whether acid sulfite pulping can produce hemp‐based dissolving pulp suitable for lyocell manufacturing. While the process is historically linked to increased cellulose accessibility, it did not achieve the low lignin content and ...
Lelia Lawson, Bernardo A. Souto, Wade Chute, Patricia I. Dolez   +3 more
wiley   +1 more source

Rapid transformation of sulfinate salts into sulfonates promoted by a hypervalent iodine(III) reagent

Beilstein Journal of Organic Chemistry, 2018
An alternative method for forming sulfonates through hypervalent iodine(III) reagent-mediated oxidation of sodium sulfinates has been developed. This transformation involves trapping reactive sulfonium species using alcohols. With additional optimization
Elsa Deruer, Vincent Hamel, Samuel Blais, Sylvain Canesi   +3 more
doaj   +1 more source

Comparative Evaluation of Single and Combined Adsorption and Peroxone Processes for Taste and Odour Control in Reservoir Water

Water and Environment Journal, EarlyView.
ABSTRACT Taste and odour compounds (T&O), particularly 2‐methylisoborneol (2‐MIB) and geosmin, pose persistent challenges in drinking water treatment, as conventional methods often achieve limited removal. This study provides a comparative evaluation of five treatment strategies: activated carbon (AC) adsorption, sulfonic acid‐modified activated carbon
Betul Aykut‐Senel, Nuray Ates, Sehnaz Sule Kaplan‐Bekaroglu, Cihan Ozgur   +3 more
wiley   +1 more source

Synthesis in pilot plant scale and physical properties of sulfonated polystyrene

Journal of the Brazilian Chemical Society, 2003
The homogenous sulfonation of polystyrene was developed in a pilot plant scale producing polymers with different sulfonation degrees (18 to 22 mole % of sulfonated styrene units).
Martins Cristiane R., Ruggeri Giacommo, De Paoli Marco-A.   +2 more
doaj  

Revolutionizing Biodiesel Synthesis: Kinetic and Thermodynamic Insights with Carbonized Doum-Shell Catalyst [PDF]

Trends in Ecological and Indoor Environmental Engineering
Background: Conventional methods of biodiesel (FAME) synthesis often involve transesterification processes that are catalysed by homogeneous catalysts, which present challenges in terms of catalyst recovery, environmental impact, and production cost ...
Abdulhalim Musa Abubakar, Haruna Mavakumba Kefas, Yusufu Luka, Jimzibea Jehu Kawuwa   +3 more
doaj   +1 more source

A Sulfur Fixation Strategy via Magnesium Oxide for Constructing High‐Rate Hard Carbon Anodes in Sodium‐Ion Batteries

ENERGY &ENVIRONMENTAL MATERIALS, Volume 9, Issue 4, July 2026.
A sulfur fixation strategy via magnesium oxide is proposed to address sulfur dissolution in hard carbon anodes for sodium‐ion batteries. This method focuses on modifying the morphological structure of the hard carbon material, leading to significantly improved electrochemical performance.
Zebin Song, Qin Gu, Yin Zhang, Peng Xiao, Liping Wang, Jian Gao   +5 more
wiley   +1 more source

The Versatile Structural World of Methanedi‐ and Trisulfonic Acid and Their Salts

ChemistryOpen, Volume 15, Issue 7, July 2026.
The solid‐state structures of the CH4‐derived polysulfonic acids methanedisulfonic acid (MDSA) and methanetrisulfonic acid (MTSA) are presented for the first time. Additionally, a broad overview over possible MDS and MTS salts, containing mostly group I cations, is given and their solid‐state structures are analyzed, showing the structural versatility ...
Katrin Eppers, Alisha Mertens, Jan Chrubasik, Mathias S. Wickleder, Jan Langwald   +4 more
wiley   +1 more source