搜索结果: 1-15 共查到“工学 Solvent”相关记录56条 . 查询时间(0.125 秒)
On the Development of Phenol-Formaldehyde Resins Using a New Type of Lignin Extracted from Pine Wood with a Levulinic-Acid Based Solvent
bio-resins phenolic resins levulinic acid lignin lignocellulosic waste resole resins
2023/12/1
Resole resins have many applications, especially for foam production. However, the use of phenol, a key ingredient in resoles, has serious environmental and economic disadvantages. In this work, ligni...
Computer-aided reaction solvent design considering inertness using group contribution-based reaction thermodynamic model
CAMD MINLP model Reaction solvent Group contribution Inertness
2023/6/19
Solvents have been widely used in process manufacturing industries. When involved in liquid-phase organic synthesis reactions, solvents can reduce the activation energy of reactions between the reacta...
Machine learning-based atom contribution method for the prediction of surface charge density profiles and solvent design
atom contribution computer-aided molecular design decomposition-based algorithm machine learning
2023/6/19
Solvents are widely used in chemical processes. The use of efficient model-based solvent selection techniques is an option worth considering for rapid identification of candidates with better economic...
Integrated solvent-process design methodology based on COSMO-SAC and quantum mechanics for TMQ (2,2,4-trimethyl-1,2-H-dihydroquinoline) production
Solvent design Process design COSMO-SAC Quantum mechanics 2,2,4-trimethyl-1,2-H-dihydroquinoline
2023/6/19
TMQ (2,2,4-trimethyl-1,2-H-dihydroquinoline) is an important antioxidant because of relatively low price and ease of application in rubber production technologies. However, due to the limited experime...
A new all-dry polymerization technique uses reactive vapors to create thin films with enhanced properties, such as mechanical strength, kinetics and morphology. The synthesis process is gentler on the...
EFFECT OF SOLVENT COMPOSITION ON THE SULFONATION DEGREE OF POLY(PHENYLENE OXIDE) (PPO)
Poly(phenylene oxide) Sulfonation Solubility parameter
2016/3/25
This paper investigates the possibility of attaining sulphonated poly(phenylene oxide) (SPPO) with a relatively higher sulfonation degree. To achieve this aim, the approach we adopt is to improve the ...
Who needs water to assemble DNA?Non-aqueous solvent supports DNA nanotechnology
Who needs water to assemble DNA Non-aqueous solvent DNA nanotechnology
2015/6/2
Researchers at the Georgia Institute of Technology have now shown that they can assemble DNA nanostructures in a solvent containing no water. They also discovered that adding a small amount of water t...
Physico-chemical and structural properties of four rice bran protein fractions based on the multiple solvent extraction method
rice bran protein fractions functional properties multiple solvent extract
2015/5/18
The physicochemical and structural properties of the concentrated rice bran protein (CRBP) and rice bran protein fractions – RBPF (albumin, globulin, prolamin, and glutelin) were investigated on the b...
Manipulating Block Copolymer Self-Assemblies in Bulk and Thin Films by Thermal and Solvent Annealing
Pure sciences Applied sciences Annealing Block copolymers Bulk Nanopatterning Self-assembly Thin film
2014/11/21
The self-assembly of block copolymers (BCPs) into well-ordered nanoscopic arrays holds promise for new technological breakthroughs as templates and scaffolds for the fabrication of nanostructured mate...
Self-Assembly of Block Copolymers by Solvent Vapor Annealing, Mechanism and Lithographic Applications
Block copolymer Lithography realtime measurement Self-assembly Solvent vapor annealing X-ray scattering
2014/11/21
Block copolymers (BCP) are a unique class of polymers, which can self-assemble into ordered microdomains with sizes from 3 nm to about 50 nm making BCPs an appealing meso-scale material. In thin films...
ZnAl2O4@SiO2 nanocomposite catalyst for the acetylation of alcohols, phenols and amines with acetic anhydride under solvent-free conditions
Spinel-type oxide Zinc aluminate Silica Sol-gel process Nanocomposite Heterogeneous catalyst Acetylation Solvent-free condition
2014/3/8
A ZnAl2O4@SiO2 nanocomposite was prepared from metal nitrates and tetraethyl orthosilicate by the sol-gel process, and characterized by X-ray diffraction, Fourier transform infrared, transmission elec...
Boehmite nanoparticle catalyst for the one-pot multicomponent synthesis of 3,4-dihydropyrimidin-2-(1H)-ones and thiones under solvent-free conditions
Boehmite nanoparticle One-pot synthesis Multicomponent synthesis Dihydropyrimidine Solvent-free
2014/3/8
A simple, green, and efficient synthesis protocol for the synthesis of 3,4-dihydropyrimidin-2-(1H)-ones using boehmite nanoparticles as catalyst was developed. It did not use any toxic metal catalysts...
Poly(4-vinylpyridinium) perchlorate as an efficient solid acid catalyst for the chemoselective preparation of 1,1-diacetates from aldehydes under solvent-free conditions
Poly(4-vinylpyridinium) perchlorate Chemoselective Supported catalyst Acylation Aldehyde
2014/3/8
Poly(4-vinylpyridinium) perchlorate has been used as a supported, recyclable, environmentally-benign catalyst for the formation of acylals from aliphatic and aromatic aldehydes in good to excellent yi...
Poly(4-vinylpyridinium)hydrogen sulfate: A novel and efficient catalyst for the synthesis of 13-aryl-indeno[1, 2-b]naphtha[1, 2-e]pyran-12(13H)-ones under solvent-free conditions
Poly(4-vinylpyridinium)hydrogen sulfate Indenonaphthopyrans, H-indene-1,3-dione β-Naphthol
2014/3/11
An facile and efficient protocol for the synthesis of 13-aryl-indeno[1,2-b]naphtha[1,2-e]pyran- 12(13H)- ones has been developed that proceeds via the one-pot three-component sequential reaction of an...
Aldol condensations of a variety of different aldehydes and ketones under ultrasonic irradiation using poly(N-vinylimidazole) as a new heterogeneous base catalyst under solvent-free conditions in a liquid-solid system Nader Ghaffari Khaligha, Taraneh Mihankhahb（图）
Ultrasound-assisted reaction Liquid-solid system Poly(N-vinylimidazole) Aldol condensation, Solvent-free
2013/12/5
An ultrasound-assisted aldol condensation reaction has been developed for a range of ketones with a variety of aromatic aldehydes using poly(N-vinylimidazole) as a solid base catalyst in a liquid-soli...