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Accession Number:
AD0753391
Title:
Chemical Modifications of Silica Surfaces
Corporate Author:
NEW YORK UNIV NY DEPT OF CHEMISTRY
Report Date:
1972-11-12
Abstract:
The purpose of the work was to modify the surfaces of silicas by chemical means, i.e. by causing them to react with gaseous or liquid materials under controlled conditions, in order to alter the nature and reactivity of the surfaces. The reactions and the molecular species occurring on the surfaces were monitored by means of infrared spectroscopic techniques. An entirely new type of surface defect has been discovered. The defect has the properties expected for a center consisting of two closely-spaced silicon radicals associated with two anomalously reactive oxygen atoms. The defect responsible for the activity of reactive silica RS is best produced by a methoxylation, pyrolysis, degassing procedure.
Descriptive Note:
Final rept. 13 May 1969-12 Nov 1972
Supplementary Note:
DOI: 10.21236/AD0753391
Pages:
0007
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
DA-ARO(D)-31-124-G1126
File Size:
0.30MB
