In this work, a base dye was applied to the dyeing of calcium alginate fiber. The dyeing properties, including dyeing time, pH and temperature, were studied. The results showed that this dye had good affinity to alginate fiber, and the dyeing fastness was also good. This research may provide a new approach...

Solid acid S2O2-8/TiO2-La2O3 (STL) was prepared by calcination at high temperature using complex oxide of TiO2 doped La2O3 as the supporter, and anion S2O2-8 as the accelerant. The catalytic synthesis of n-butyl propanoate over STL was selected as the probe reaction to examine its catalytic esterification...

An unsymmetrical photochromic diarylethene, 1-(2-methyl-5-(9-anthracyl)-3-thienyl) -2-[2-methyl-5-(4-n-pentylphenyl)-3-thienyl] perfluorocyclopentene was synthesized at first. Its photochromic and fluorescence properties were investigated in detail. This compound exhibited reversible photochromism, changing...

A new unsymmetrical photochromic diarylethene 1- [3,5-dimethyl-4-isoxazolyl] -2-[2-methyl-5-acetenyl-3-thienyl] perfluorocyclopentene has been synthesized. Its photochromic in hexane solution and kinetics experiment were investigated in detail. The result indicated that this diarylethene had reversible...

A photochromic diarylethene 1, 2-bis-[2-methyl-5-(3-pentyl) phenyl-3-thienyl] perfluorocyclopentene was synthesized and characterized. Its properties, such as photochromism and fluorescence were investigated systematically. Upon irradiation with UV light, it underwent a reversible transformation from...

In order to fill up the deficiency of the theoretical basis about reduction swelling during Bayan Obo iron concentrate roasting and reduction process, The influence of Na2O content on lattice structures of iron oxides at different reduction stages of Fe2O3 briquetting has been investigated by using the...

The properties of hectorite was strongly affected by their microstructures and purity. Here NaxLixMg3-xSi4O10(OH)2ú4H2O multilayer pancakelike structures were fabricated successfully by hydrothermal reaction of Na2SiO3ú9H2O, MgCl2ú6H2O and LiClúH2O in autoclave at 473K. The synthesis process of hectorite...

A new cationic type asphalt emulsifier of aminoethylpiperazine/formaldehyde modified lignin amine was synthesized by the reaction of lignin, N-aminoethylpiperazine, sodium hydroxide and formaldehyde. The synthesis process was detected by online FTIR technique and the intermediate was found. Based upon...

Coalescence effect of the surface disposal devices is greatly impacted by the large amount of aging oil because of its complicated interfacial properties, which heavily affects oil production. The typical aging oil properties are evaluated, interfacial properties and the causes of formation are discussed...

Polyphenols, flavonoids, triterpenoid and VitaminC from Clinacanthus nutans were extracted by ultrasonic-assisted ethanol extraction. The optimal extracting conditions were established as ethanol as solvent, ultrasound treatment time 35min, solid-liquid ratio 1:45 (g/ml), ethanol concentration 70% and...

The Jurassic coal of NW China has huge recoverable reserves but large spontaneous combustion tendency. Studying on spontaneous combustion mechanism of Jurassic coal is behind of the East and north of the Carboniferous Permian. Therefore, understanding the status of fire prevention of Jurassic seam of...