Results 191 to 200 of about 26,556 (257)

Effects of different sulfonation times and post-treatment methods on the characterization and cytocompatibility of sulfonated PEEK

Journal of Biomaterials Applications, 2020
Polyetheretherketone (PEEK) has been becoming a popular implant material in orthopaedic applications. The lack of bioactivity affects PEEK’s long-term lifetime, and appropriate surface modification is an effective way to enhance its bioactivity ...
Rui Ma, Jialin Wang, Chengxin Li, Kai Ma, Jie Wei, Pei Yang, D. Guo, Kunzheng Wang, Wei Wang   +8 more
semanticscholar   +1 more source

Effect of degree of sulfonation on the performance of adsorbent SAPO-34/S-PEEK composite coatings for adsorption heat pumps

, 2021
A composite adsorbent coating on Al6061 aluminum substrate, based on SAPO34 zeolite filler and sulfonate poly (ether-ether ketone) (S-PEEK) matrix is proposed for sustainable energy saving technologies.
D. Palamara, P. Bruzzaniti, L. Calabrese, E. Proverbio   +3 more
semanticscholar   +1 more source

Role of sulfonation in lignin-based material for adsorption removal of cationic dyes.

International Journal of Biological Macromolecules, 2019
Sulfonate lignin-based hydrogels (SLG) were prepared through simple and effective method and successfully applied to the adsorption of cation dye methylene blue (MB).
Jiarong Li, Hao Li, Ze Yuan, Jing Fang, Lifang Chang, Hongyu Zhang, Chunli Li   +6 more
semanticscholar   +1 more source

N2/Ar plasma-induced surface sulfonation on graphene nanoplatelets for catalytic hydrolysis of cellulose to glucose

, 2021
The surface functionalization of graphene nanoplatelets catalysts (GNPs) with OH, COOH, and SO3H groups for cellulose hydrolysis was investigated via gas–liquid interfacial plasma (GLIP) sulfonation system under 1 M H2SO4.
Lusha Qin, N. Takeuchi, Katsuyuki Takahashi, Jun Kang, K. Kim, O. Li   +5 more
semanticscholar   +1 more source

Sulfonated polysulfone proton exchange membrane influenced by a varied sulfonation degree for vanadium redox flow battery

Journal of Membrane Science, 2019
A series of sulfonated polysulfone (SPSF) proton exchange membranes with varied degree of sulfonation (DS) are prepared through controlling the molar ratio of sulfonated agent and polysulfone (PSF).
Yuxia Zhang, Lanyue Zheng, Bo Liu, Haixia Wang, Haifeng Shi   +4 more
semanticscholar   +1 more source

Optimization of sulfonation process for the development of carbon-based catalyst from crambe meal via response surface methodology

, 2020
In this work, crambe meal was successfully used as precursor of sulfonated carbon-based catalyst for reaction of esterification of the oleic acid. The effects of the variables, temperature, time and H2SO4:carbon ratio of the sulfonation process on the ...
J. M. Fonseca, Lucas Spessato, André L. Cazetta, Karen C. Bedin, Sandra A.R. Melo, F. Souza, Vitor C. Almeida   +6 more
semanticscholar   +1 more source

Green Sulfonation of Carbon Catalysts via Gas–Liquid Interfacial Plasma for Cellulose Hydrolysis

ACS Sustainable Chemistry and Engineering, 2020
Sulfonated carbon catalysts exhibit excellent catalytic performance for biomass transformation, yet most currently used sulfonation approaches still rely on concentrated sulfuric acid or chlorsulfu...
Lusha Qin, T. Ishizaki, N. Takeuchi, Katsuyuki Takahashi, K. Kim, O. Li   +5 more
semanticscholar   +1 more source

Alkaline sulfonation and thermomechanical pulping pretreatment of softwood chips and pellets to enhance enzymatic hydrolysis.

Bioresource Technology, 2020
To assess the impact of alkalinity on sulfonation and the enzyme-mediated hydrolysis of softwood cellulose, Lodgepole pine chips were impregnated with 8% sodium sulfite and increasing loadings of sodium carbonate before thermomechanical pulping.
Jie Wu, R. Chandra, Masatsugu Takada, P. D. del Río, Kwang Ho Kim, C. Kim, Li-Yang Liu, Scott Renneckar, J. Saddler   +8 more
semanticscholar   +1 more source

Solid acid catalysts produced by sulfonation of petroleum coke: Dominant role of aromatic hydrogen.

Chemosphere, 2020
Carbon based solid waste materials have been intensively investigated for the preparation of solid acid catalysts through sulfonation, but the acidity varies significantly depending on the material.
Ye Xiao, J. Hill
semanticscholar   +1 more source

Biomimetic photocatalytic sulfonation of alkenes to access β-ketosulfones with single-atom iron site

, 2020
Biomimetic photocatalysis as an important organic transformation strategy has received increasing attention, with the performances of biomimetic catalysts largely depending on their design.
Jiangwei Wen, Xiaoting Yang, Zongzhao Sun, Jianjing Yang, P. Han, Qiuxia Liu, H. Dong, Meng Gu, Limin Huang, Hua Wang   +9 more
semanticscholar   +1 more source