Results 71 to 80 of about 37,225 (265)

Copdymers of Maleic Anhydride

Kobunshi Kagaku, 1970
メタクリル酸グリシジルと無水マレイン酸とのラジカル共重合をアセトンまたはジオキサン中で40°または50℃で行なった。モノマー組成とコポリマー組成の関係はpenultimate effectを考えれば合理的に説明できる。モノマー反応性比は50℃では4.2 (rG) および0 (rM=rM′=1/rG′) であり, 40℃ては4.5 (rG) および0 (rM=rM′=1/rG′) である。コポリマーはエポキシ基および無水マレイン酸基の反応で不溶性に変わる。
Kaishi Noma, Tokuyoshi Saito, Masazo Niwa, Teruki Okuda   +3 more
openaire   +2 more sources

Influence of Zn2+ and Oxygen Supply on Malic Acid Production and Growth of Aspergillus oryzae

Biotechnology and Bioengineering, EarlyView.
ABSTRACT Malic acid is a valuable platform chemical traditionally derived from fossil‐based resources. Microbial cultivation with Aspergillus oryzae offers a sustainable alternative based on renewable feedstocks. In this study, a well‐established minimal medium for malic acid production, commonly used in previous research to ensure reproducibility, was
Lukas Hartmann, Anke Neumann, Dirk Holtmann, Katrin Ochsenreither   +3 more
wiley   +1 more source

Urea- Hydrogen Peroxide (UHP) Oxidation of Thiols to the Corresponding Disulfides Promoted by Maleic Anhydride as Mediator

Molecules, 2005
Urea-hydrogen peroxide (UHP) was used in the presence of maleic anhydride as mediator in a simple and convenient method for the oxidation in high yield of some thiols to the corresponding disulfides.
M. H. Habibi, M. Montazerozohori, Bahador Karami   +2 more
doaj   +1 more source

Safe design and operation of fluidized-bed reactors: Choice between reactor models [PDF]

, 1990
For three different catalytic fluidized bed reactor models, two models presented by Werther and a model presented by van Deemter, the region of safe and unique operation for a chosen reaction system was investigated. Three reaction systems were used: the
Westerink, E.J., Westerterp, K.R.
core   +2 more sources

From Two‐Electron to Four‐Electron System: Electrolyte Regulation for Advanced Aqueous Zn–I2 Batteries

Carbon Energy, EarlyView.
This review systematically summarizes recent progress in electrolyte‐regulated aqueous Zn–I2 batteries (AZIBs). It outlines the fundamentals of AZIBs along with their main challenges, and then analyzes electrolyte‐engineering strategies that improve both two‐ and four‐electron reactions.
Yucong Wang, Ruifeng Huang, Zhangchi Yang, Shaojian Zhang, Lijing Yan, Weijie Chen, Xiaolong Lin, Yongjun Li, Shuxing Wu, Zhan Lin, Jun Lu   +10 more
wiley   +1 more source

Spatial Structural Self‐Regulation Engineering Increases Close Pores of Starch‐Derived Hard Carbon for Sodium‐Ion Batteries

Carbon Energy, EarlyView.
Spatial structural self‐regulation strategy stimulates the conversion of the hydroxy group (–OH) in starch into carbonyl (–C=O) within a stable three‐dimensional cross‐linking structure. This structure not only reduces the production of water and volatile products, thereby preventing foaming during pyrolysis and improving carbon yield, but also ...
Feng Wu, Guiyu Liu, Yulin Cao, Zhiqiang Wang, Hongzhi Wang, Chun Zeng, Yanfang Wang, Yongcong Huang, Fangchang Zhang, Zhan Wang, Xuhui Li, Kuan Jing, Wenjun Shi, Yingzhi Li, Zhouguang Lu, Hua Cheng   +15 more
wiley   +1 more source

Degradation of Proteins and Starch by Combined Immobilization of Protease, α-Amylase and β-Galactosidase on a Single Electrospun Nanofibrous Membrane

Molecules, 2019
Two commercially available enzymes, Dextrozyme (α-amylase) and Esperase (protease), were covalently immobilized on non-woven electrospun poly(styrene-co-maleic anhydride) nanofiber mats with partial retention of their catalytic activity ...
William J. Cloete, Stefan Hayward, Pieter Swart, Bert Klumperman   +3 more
doaj   +1 more source

Substituent‐Controlled Ring Opening of 1‐Substituted Benzocyclobutenes: Electronic Structure and Diradical Character of Ortho‐Quinodimethane Intermediates

Chemistry – A European Journal, EarlyView.
Experimental and computational studies elucidate how the electronic nature of substituents controls the ring‐opening temperature and diradical character of 1‐substituted benzocyclobutenes, enabling the rational design of o‐quinodimethane‐based synthetic transformations.
Magali Dallegre, Imen Abid, Roselyne Rosas, Maxime Dousset, Gaëlle Chouraqui, Laurent Commeiras, Didier Siri, Didier Gigmes, Anthony Kermagoret   +8 more
wiley   +1 more source

Room‐Temperature Helix‐to‐Disc Conversion of Thia[6]helicene S,S‐Dioxides to Coronene via In Situ Phenoxide Anion Generation

Chemistry – A European Journal, EarlyView.
In situ phenoxide formation at the benzene terminus triggers room‐temperature conversion of thia[6]helicene S,S‐dioxides to coronene. The solubility contrast drives product precipitation, enabling isolation by simple filtration. This pericyclic annulation between the helical termini provides direct access to coronene‐type planar architectures ...
Kaito Seino, Takashi Murase
wiley   +1 more source

Influence of coupling agents on rheological, thermal expansion and morphological properties of recycled poypropylene wood flour composites

Maderas: Ciencia y Tecnología, 2018
In this work, thermal expansion and morphological properties of recycled polypropylene wood flour composites were evaluated in order to verify the effect caused by the usage of a natural oil as coupling agent.
Matheus Poletto
doaj