A new solid phase microextraction (SPME) fiber coated with activated charcoal was estimated by determination of benzene, toluene and xylene(BTX)in indoor air.

Oxidation of p-xylene with molecular oxygen catalyzed by CoCl_2 supported on 5A zeolite;

Research on gas-phase selective oxidation of p-xylene over Fe-Mo catalyst;

Surface tension measurement for binary mixture of p-xylene+ acetic acid with differential maximum bubble pressure method;

Progress of Modified ZSM-5 Type Zeolite for Preparing Paraxylene from Toluene and Methanol;

Advances in the catalytic systems for synthesis of terephthalic acid via oxidation of paraxylene;

The experimental results showed that H-MCM-22 possessed a high activity on alkylation of toluene with methanol, but low paraxylene and xylene selectivity.

Advances of Technology in the Adsorptive Separation of Para-xylene;

Additionally, the application of this theory was shown with the example of separating para-xylene from mixed xylenes.

Recent technology advances on selective toluene methylation of toluene with methanol to para-xylene were reviewed,including the reaction mechanism of the process,predominant active component,element modification methods on zeolites and several potential industrial technologies of methylation of toluene with methanol.

Reduction ways for the PX unit consumption in PTA plant;

DESIGN OF THE ADSORBER PIPELINE IN ELUXYL PX ADSORPTIVE SEPARATION PROCESS;

TECHNICAL FEATURES OF THE NEW PROCESS USED IN PX COMBINATION UNIT;

Geometrical optimization and theoretical calculation of the vibrational spectra of p xylene( p C8H10) and its cation were performed using the 6 31G  basis sets of the Gaussian98 program.

To obtain the basic data for aromatics recovery, three quaternary liquid liquid equilibria systems of n heptane benzene (N formylmorpholine(NFM)+water), n heptane toluene (NFM+water) and heptane p xylene (NFM+water) were investigated at normal pressure and 333.

In the paper,the development of p xylene production technology is introduced briefly.