Purification of hydrogen peroxide

Details Purification of hydrogen peroxide Purification of hydrogen peroxide

C - Chemistry, Metallurgy

01

B

C01B 15/013 (2006.01)

Patent

CA 2049944

13 ABSTRACT OF THE DISCLOSURE The electronics industry demands that hydrogen peroxide for use therein be purified to very low levels of impurities, currently at the level of a few ppb for some impurities, or even lower. However, existing methods are either inherently unsafe because they bring concentrated hydrogen peroxide into contact with a concentrate of transition metal decomposition agents for peroxide and a purification resin which acts as a source of carbon, or are unable to attain the desired impurity level. The instant purification process first makes a concentrated suspension of stannic oxide particles in an aqueous medium, which can include aqueous hydrogen peroxide, by subjecting the mixture to high shear mixing, introducing an effective amount of the dispersion into the peroxide solution and filtering the mixture so as to remove the stannic oxide particles that now are loaded with ionic impurities, and particularly with transition metal ions. Purification to very low impurity levels can accordingly be made with improved safety.

Affiliated with

Also associated with

Rating

Purification of hydrogen peroxide does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Purification of hydrogen peroxide, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purification of hydrogen peroxide will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-2055042