【摘 要】
：
Mesoporous SBA-15 with different Fe2O3 loading were synthesized by an in-situ coating progress for removals of dichlorodiphenyltrichloroethane(DDT)and its deriv
【机 构】
：
Research Center for Eco-Environmental Sciences,Institute of Physics and Chemistry
论文部分内容阅读
Mesoporous SBA-15 with different Fe2O3 loading were synthesized by an in-situ coating progress for removals of dichlorodiphenyltrichloroethane(DDT)and its derivatives,i.e.,1,1-dichloro-2,2-bis-(p-chlorophenyl)ethane(DDD)and 1,l-dichloro-2,2-bis-(4-chloro -phenyl)ethane(DDE).The results from XRD(X-ray diffractometer),TEM(transmission electron microscopy)indicated that the iron could be well dispersed on SBA-15 within 6 wt.％ Fe2O3 loading.Nitrogen adsorption-desorption tests indicated that the synthesized materials were characterized by ordered meso-structure,high surface area and large pore volume.DDTs were removed from aqueous media in 12-hr treatment and high removal efficiency of DDTs was achieved at over 94％.DDTs could be completely degraded at 350℃ under the existence of SBA-15 with 4 wt.％ Fe2O3 loading.The final degradation products of DDT were dichlorobenzophenone (DCB)and bis-(4-chloro-phenyl)methane(DDM),suggesting a complete dechlorination from trichloromethyl.
其他文献
Monoclinic BiVO4 with multiple morphologies and/or porous structures were fabricated using the hydrothermal strategy.The materials were characterized by means o
A new crown ether appended Fe(Ⅲ) porphyrin complex was prepared by sulfuryl chloride appended benzo- 15-crown-5 to the meso position of meso-5,10,15,20-tetra(4
The flow regimes below an aerator influence directly the air entrainment and the cavitation damage control.Based on the theoretical considerations,the experimen
Cavitating flows around skewed propellers are investigated numerically by means of the unsteady Reynolds Averaged Navier-Stokes (RANS) Equation method.The stand
Two novel steroidal saponins (timosaponin BⅢ-a,timosaponin BⅢ-b) together with a known steroidal saponin (timosaponin BⅡ-b) were prepared by the dilute acid
An extracellular polyhydroxybutyrate(PHB) depolymerase was purified to homogeneity from the culture supematant of a PHB-degrading bacterium,Pseudomonas mendocin
A novel silica catalyst was synthesized by evaporation-induced self-assembly(EISA)method and tested for the catalytic selective hydrolysis of cellulose to gluco
A series of some new quinoline based imidazole-5-one derivatives have been synthesized by the fusion of oxazol-5-ones,various p-substituted anilines and zeolite
The asymptotic distribution of the change-point estimator in a jump changepoint model is considered.For the jump change-point model Xi =a + θI{[nTo] ＜ i ≤n} +