Results 11 to 20 of about 10,564 (229)

Degrees of Sulfonation: Mapping the Reactivity Landscape of Acridine and Acridone

open access: yesOrganics
Although sulfonated acridines and acridones are valuable scaffolds in diagnostics and materials science, to our best knowledge, there is no comprehensive study that addresses how the degree of sulfonation depends on reaction parameters. To fill this gap,
Péter Kisfaludi   +3 more
doaj   +2 more sources

Polysulfone with Different Degrees of Sulfonation: Simple Method with Acetyl Sulfate [PDF]

open access: yesOrbital: The Electronic Journal of Chemistry
In this work, the authors present as an innovation, the homogeneous sulfonation of Udel® polysulfone (PSU) with acetylsulfate (ACS) under reflux at 45°C in dichloromethane and inert N2 atmosphere (g) for 1.5 h.
Altamiro Xavier de Souza   +9 more
doaj   +2 more sources

Amphiphilic Biaryl Monophosphine Ligands by Regioselective Sulfonation [PDF]

open access: yes, 2020
Amphiphilic ligands are valued for their ability to facilitate organometallic reactions in the presence of water. The regioselective sulfonation of a series of commercially available biaryl monophosphines to generate amphiphilic ligands is presented ...
Jacob, Rodriguez   +2 more
core   +2 more sources

Sulfonation-Induced Cross-Linking and Nanostructural Evolution of a Thermoplastic Elastomer for Ordered Mesoporous Carbon Synthesis: A Mechanistic Study

open access: yes, 2023
Direct pyrolysis of self-assembled block copolymers (BCPs) is a resource-efficient method for synthesizing ordered mesoporous carbons (OMCs), through which the resulting pore textures and properties are often collectively determined by the precursor ...
Zhe Qiang (1649227)   +5 more
core   +1 more source

豆渣基固体酸的制备及催化大豆油的环氧化Preparation of soybean dreg based solid acid and its catalytic epoxidation of soybean oil

open access: yesZhongguo youzhi, 2022
为了促进豆渣的资源化利用,以豆渣为原料,通过同步炭化磺化法制备豆渣基固体酸催化剂,并将其应用于催化合成环氧大豆油,考察了磺化剂种类、磺化剂用量、磺化温度及磺化时间对豆渣基固体酸结构及催化性能的影响。结果表明:以硫酸为磺化剂,在硫酸与豆渣质量比2∶ 1、磺化温度190 ℃和磺化时间10 h的条件下,制备的豆渣基固体酸BD-1-2对大豆油的环氧化反应表现出较好的催化性能,环氧大豆油的环氧值达到6.30%;BD-1-2在200 ℃以内可保持热力学性质稳定; 扫描电镜结果显示,BD-1 ...
刘鹏1,谢梦姣1,罗德仪1,周喜1, 2 LIU Peng1, XIE Mengjiao1, LUO Deyi1, ZHOU Xi1, 2
doaj   +1 more source

Review: equipment for anionic surfactant manufacture from oil palm

open access: yesPublicaciones e Investigación, 2010
In the present study is performed a review of the current processes of sulfonation of various raw materials for determine the process conditions in order to present the state of the art of sulfonation processes for the manufacture of anionic surfactants.
Jesús Alfonso Torres Ortega
doaj   +1 more source

The host cell sulfonation pathway contributes to retroviral infection at a step coincident with provirus establishment. [PDF]

open access: yesPLoS Pathogens, 2008
The early steps of retrovirus replication leading up to provirus establishment are highly dependent on cellular processes and represent a time when the virus is particularly vulnerable to antivirals and host defense mechanisms.
James W Bruce   +2 more
doaj   +1 more source

A Highly Effective Biomass-Derived Solid Acid Catalyst for Biodiesel Synthesis Through Esterification

open access: yesFrontiers in Chemistry, 2022
Efficient valorization of renewable liquid biomass for biodiesel production using the desirable biomass-based catalysts is being deemed to be an environmentally friendly process.
Songdang Zhang   +4 more
doaj   +1 more source

Continuous sulfonation of hexadecylbenzene in a microreactor

open access: yesGreen Processing and Synthesis, 2021
Heavy alkyl benzene sulfonates are inexpensive surfactants that are extensively used as oil-displacing agents during tertiary oil recovery. Among these, C16–18 heavy alkyl benzene sulfonates possess an excellent ability to reduce the oil-water interface ...
Xu Yiming   +8 more
doaj   +1 more source

Biodiesel Production From Oleic Acid Using Biomass-Derived Sulfonated Orange Peel Catalyst

open access: yesFrontiers in Catalysis, 2022
Biodiesel, as an alternative fuel for petroleum-based fuel, has recently acquired significant attention. The current study focused on using biowaste to produce catalysts for low-cost biodiesel manufacturing.
Manoj Kumar Kumawat   +1 more
doaj   +1 more source

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