Effect of pretreated by K_2Cr_2O_7 solution and activated on specific surface area of carbon fiber;

Variation of pore structure of semi-coke with temperature and spatial location during pyrolysis ——Porosity,specific surface area and pore size distribution;

Calculation of the specific surface area of the froth in flotation;

Determination of catalyst′s specific area by LN_2;

The results show that,when the contents of titanium increase,the specific area of these hybrid materials increase accordingly.

By regressive analyzing the relation between specific area and water retention value (WRV) of the bleached eucalyptus KP can be expressed with a logarithm regressive equation as follows:y=127.

Effect of pyrolysis conditions on the char surface area and pore distribution;

Influence of preparing technology on specific surface area and oil absorption value in thepreparation of precipitated silica;

Determination of the Surface Area of Catalyst Support by Gas Chromatography;

With cordierite as first carrier and self-made γ-Al2O3 containing rare earth oxides as second carrier the special surface area of cordierite honeycomb ceramics is increased.

It is found that hydration and calcination are beneficial to improve the special surface area、 total pore volume and pore-size distributions.

The results show that pyrolysis temperature, pyrolysis time and pyrolysis rate have an obvious effect on the special surface area(SSA) and average pore size(APS) of the biomass chars.