Resources Contact Us Home
Silica gel

Image Number 4 for United States Patent #7074376.

A method of producing a silica gel by hydrolyzing a silicon alkoxide and subjecting the resulting hydrogel to a hydrothermal treatment substantially without aging it is described. Also described in a silica gel produced by such a method and a silica gel which has the following characteristics: (a) the pore volume is from 0.6 to 1.6 ml/g, (b) the specific surface area is from 300 to 900 m.sup.2/g, (c) the mode diameter (Dmax) of pores is less than 20 nm, (d) the volume of pores having diameters within .+-.20% of Dmax is at least 50% of the total pore volume, (e) it is amorphous, and (f) the content of metal impurities is at most 500 ppm.

  Recently Added Patents
Method to calibrate RF paths of an FHOP adaptive base station
3D IC method and device
Topical antibiotic composition for the prevention of Lyme disease
Digital photographing apparatus
Method and system for encrypting data in a wireless communication system
Efficient relay automatic repeat request procedure in broadband wireless access system
  Randomly Featured Patents
Active matrix type display device and driving method thereof
Hot wire chemical vapor deposition (CVD) inline coating tool
Method and apparatus for compressing and decompressing images
Nonvolatile semiconductor storage device
Back analysis system
Wheelchair brake attachment
Fiber optic cable having no rigid strength members and a reduced coefficient of thermal expansion
Aggregate maximum throughput for groups of service flows
Hydrophilic tetramethylxylylenecarbodiimide
New Guinea Impatiens plant named `Fisupnic Salmdeep`