The use of environmental friendly solvents for the fabrication of solution processed organic photovoltaics is a key issue to scale up the technology. Nowadays however, toxic and harmful chlorinated solvents are largely used in polymer solar cell laboratory research. In this work we successfully reached high solubility and miscibility of the low band gap polymer Poly[[4,8-bis[(2-ethylhexyl)oxy]b...

background aromatic organic solvents are extensively used in various industries. xylene is a colorless, transparent liquid, with the characteristic odor of the aromatic hydrocarbons family, which is widely used in industries. adsorption is a conventional method of purifying polluted air containing volatile organic compounds (vocs). zeolite has many unique properties such as high capacity, molec...

The work gives estimation of volatile aromatic hydrocarbons content in the water small rivers Khabarovsk December 2021. maximum concentrations benzene, ethylbenzene, xylenes and pseudocumol were noted Kurcha-Murcha river draining refinery area.

Xylenes transformations have been investigated over ZSM-5 zeolite in a riser simulator that mimics closely the operation of commercial fluidized-bed reactors. P-xylene was found to be more reactive than the other isomers followed by o-xylene and m-xylene was found to be least reactive. The order of reactivity is consistent with the order of diffusivity. At low temperature (400°C), isomerization...

In this paper, Zr(IV) nitrate solution decomposed from Viet Nam zircon concentrate was the source of zirconium extraction by liquid-liquid (L.L.E). The FT-IR and UV-Vis spectra confirmed D2EHPA/p-xylenes. There were four stages for purification impurities Zr matrix. First, elements in 3.0 M HNO3 50% D2EHPA/p-xylenes conducted. Second, two scrubbing cycles using 6.0 HNO3, 76.5% total amount reta...

In this paper we elected to nitrate p-xylene because this compound has only one mononitro- and trinitro- isomer. Trinitro-p-xylene was used as a starting material for the synthesis of other compounds in subsequent work. The mononitration of p-xylene can be easily carried out at 30 degrees C. Nitro-p-xylene is easily nitrated to dinitro-p-xylene at a temperature of 80 degrees C. The trinitro-p-x...

A shortcut procedure as quick, easy-to use method for design and simulation of multicomponent batch distillation is used to predict the operating condition of recovering xylene from solvent in an existing batch distillation column in benzol refinery. The procedure can be used to investigate the effect of the operating parameters on the operation of column for three possible modes of batch d...