Results 51 to 60 of about 173,842 (211)

Síntese e caracterização de copolímeros de propeno com 1-hexeno e 1,5-hexadieno Synthesis and characterization of propylene/1-hexene and propylene/1,5-hexadiene copolymers

Polímeros, 2012
Copolímeros de propeno com 1-hexeno e 1,5-hexadieno, contendo diferentes teores de comonômeros, foram obtidos utilizando técnicas de polimerização em lama e em massa com catalisadores Ziegler-Natta heterogêneos de alta atividade.
Aline F. Lima, Grazielle R. Borges, Lauriane M. Candeco, José C. Pinto, Márcio Nele, Susana Liberman   +5 more
doaj  

The effect of catalyst precursors and conditions of preparing Pt and Pd-Pt catalysts on their activity in the oxidation of hexane

Open Chemistry, 2017
The effectiveness of under-air n-hexane oxidation over monolithic catalysts made of heat-resistant foil, containing Pt, Pd or Pt-Pd, was compared. Pt and Pd precursors, either containing chlorine or devoid of chlorine, were used to prepare the catalysts.
Kucharczyk Barbara, Szczygieł Bogdan, Chęcmanowski Jacek   +2 more
doaj   +1 more source

Photooxidation of n-Hexanal in Air [PDF]

Molecules, 2001
Dilute mixtures of hexanal in synthetic air (up to 100 ppm) were photolyzed with fluorescent UV lamps (275-380 nm) in air at 298 K. The main photooxidation products, identified and quantitatively analyzed by FTIR spectroscopy, were butene, CO, vinylalcohol and ethanal.
Tadic, J., Juranic, I., Moortgat, G.
openaire   +3 more sources

Water-hexane sorption in sunflower meals [PDF]

, 2000
Sorption equilibria of water and hexane in sunflower meals were determined at atmospheric pressure and temperatures from 50 to 95 °C. Adsorption-desorption experiments, for both individual vapors and water-hexane mixtures, were carried out using a ...
D. A. Cardarelli, M. A. Mattea, Cardarelli, Damián Aldo, G. H. Crapiste, Crapiste, Guillermo Hector, Mattea, Miguel Angel   +5 more
core   +1 more source

Normal-hexane treatment on PET-based waste fiber depolymerization process

e-Polymers
The global increase in polyethylene terephthalate (PET)-based waste fiber poses a persistent environmental risk. While efforts have been made to repurpose waste fibers into bags, clothing, and building materials, the depolymerization process to extract ...
Cho Woo Seok, Lee Joon Hyuk, Na Da Yun, Choi Sang Sun   +3 more
doaj   +1 more source

Efficient Separation of Isoamyl Alcohol from Fusel Oil Using Non-Polar Solvent and Hybrid Decanter–Distillation Process

Applied Sciences
Fusel oil is a fermentation by-product composed of a complex mixture of alcohols (ethanol, isoamyl, propanol, and butanol isomers) and water. The primary challenges lie in water separation and the recovery of the valuable component, isoamyl alcohol.
Mihaela Neagu, Diana-Luciana Cursaru, Alexey Missyurin, Octavian Goian   +3 more
doaj   +1 more source

Comparison of Enzymatic Hydrolysis and Chemical Methods for Oil Extraction from Rainbow Trout (Oncorhynchus Mykiss) Waste and Its Influence on Omega 3 Fatty Acid Profile [PDF]

International Journal of Nutrition Sciences, 2017
Background: During fish processing operations, significant fish waste is generated, causing environmental problems. This study compared enzymatic hydrolysis and chemical methods for oil extraction from rainbow trout (Oncorhynchus mykiss) waste and its ...
Siavash Babajafari, Marzieh Moosavi-Nasab, Samira Nasrpour, Mohammad-Taghi Golmakani, Farzad Nikaein   +4 more
doaj  

Kinetics and Mechanism for the Metalation of 5,10,15,20-Tetrakis(pentafluorophenyl)porphyrin with Bis(β-diketonato)copper(II) Complexes in Supercritical Carbon Dioxide and n-Hexane

, 2016
The copper(II) ion incorporation reactions into 5,10,15,20-tetrakis(pentafluorophenyl)porphyrin (H2tpfpp) to form the Cu(tpfpp) complex have been kinetically investigated with bis(β-diketonato)copper(II) complexes (CuL2) such as bis(1,1,1,5,5,5 ...
Shi-jun Liu (3051477), Shigenobu Funahashi (2961960), Yasuhiro Inada (2371393), Hideyuki Sato (76321), Taichi Horita (3051474)   +4 more
core   +1 more source

Manufacturing of renewable and biodegradable fiberboards from cake generated during biorefinery of sunflower whole plant in twin-screw extruder: Influence of thermo-pressing conditions [PDF]

, 2012
The starting material used in this study was a cake generated during thermo-mechanical fractionation of sunflower (Helianthus annuus L.) whole plant in a twin-screw extruder. It was slightly deoiled (16.7% of oil in dry matter). Composed mainly of fibers
Evon, Philippe, Vandenbossche, Virginie, Rigal, Luc   +2 more
core   +1 more source