In this paper,the specific surface area and pore size distribution of the sawdust has been measured by NOVA1000 specific surface area instrument,which is used in the ammonium nitrate explosive.
The specific surface areas and particle diameter distributions of the catalysts prepared with different Ce loading contents were determined by SEM, TEM and specific surface area instrument ChemBET3000 respectively, and the results showed the particle diameter distribution of the catalyst prepared with loaded Ce content 5wt% and loaded Sn content 14.3wt% was better than the others, and it's SBET was also largest.
The photocatalysts of TiO_ 2 nanowires array film(TiO_2/AAO)and TiO_2/glass film,TiO_2/fiberglass cloth film were prepared by sol-gel chemistry and were characterized with XRD,electron probe microanalysis(EPMA) and specific surface area measurement. The photocatalytic activity for degradation of gaseous formaldehyde at different initial concentration were also studied and compared.
Nanostructured β-nickel hydroxide powder is synthesized by a precipitate-transformation method. The structure and the morphology of the synthesized products are studied by X-ray diffraction(XRD),BET surface area,field emission scaning electron microscope(FE-SEM),Transmission electron microscope(TEM).
Nanophotocatalyst La1-xSrxFeO3(x=0,0.1,0.3,0.5) were prepared by citric acid complexometry. To obtain physico-chemical properties and microstructure,these powders were characterized by TG/DTA,XRD,SPM. The photocatalytic activities of these powders in the methylene blue were studied.
Properties of TiO_2 ultrafine particles were charactered by XRD,TEM,DTA/TG,BET. The results showed that the as-prepared particles which are globose and sheet are nanometer,and the powders are rutile and anatase phase,the average size of this two phase were 6.8nm and 24nm. The specific surface area of the powders was 116.8m~2/g.
TiO2 powder, particle size less than 10 nm, has been prepared by the hydrolysis of TiOSO4 solution in the presence of a kind of self-made surfactant, and the photocatalytic degradation of methyl orange solution by using nanosized TiO2 has been studied.
The morphology of the powder was characterised by Rigaku-DmaxⅡhigh-resolution X-ray diffractometer(XRD),JSM-6700F scanning electron microscope(SEM). Particle size distribution and BET specific surface area was tested by LS800 laser diffractron particle analyzer,Brunauer-Emmett-Teller method.
Using the optical surface analyzer with proper calibration and background removal, the volume of lubricant in a lubricant puddle on the disk has been measured accurately.
The rampload process of the magnetic head-disk interface was investigated by using a laser Doppler vibrometer, a high-speed video camera, and an optical surface analyzer.
In a typical head/disk interface of a rigid disk drive, the motion and redistribution of a 14 ? thick lubricant film on the disk under a flying slider is analyzed with an optical surface analyzer.
The structures of the derived powders were characterized by thermogravimetric and differential thermal analysis, X-ray diffraction, transmission electron microscope, and Brunauer-Emmett-Teller surface area measurement.
The synthesized product was characterized physically by thermogravimetric analysis, X-ray diffraction, transmission electron microscopy, and Brunauer-Emmett-Teller-specific surface area measurement.
The synthesized sample was characterized physically by thermogravimetric analysis, X-ray diffraction, transmission electron microscope (TEM), and Brunauer-Emmett-Teller (BET) surface area measurement, respectively.
The synthesized zeolite was characterized using various techniques such as X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, BET method for surface area measurement etc.
Based on date of surface topography of rock joint measured by laser profilometer, by transferring the height distribution into the slope distribution and taking spectral analysis of slope distribution, the anisotropic behavior of surface topography of rock joint is discussed in this paper. The general statistical parameters can supply the average measurement of certain behavior of individual profiles, but can not catch the behavior of anisotropy. However, the power spectral density can characterize both the...
In order to ensure the measurement precision of water-leaving radiance, it is vital to calibrate the optical instruments in lab. In addition, it is necessary to monitor the stability of the optical instruments during the long-term field test because of complicated field environment. In this paper, the method of in-lab absolute radiating calibration on the basis of SAS-II that is manufactured by Satlantic Inc. in Canada is expatiated. And a method to monitor the stability of the optical instrument is introdu...
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surface area instrument
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