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A thermographic method for determination of natural and synthetic silica-alumina catalysts

✍ Scribed by Z.G. Zoolfoogarov; A.S. Aleeyev; S.M. Rasoolova; V.E. Smeernova


Book ID
113172379
Publisher
Elsevier Science
Year
1962
Tongue
English
Weight
103 KB
Volume
1
Category
Article
ISSN
0021-9517

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Silica-alumina catalysts of varying acidity were used for polymerization of hexamethyl cyclotrisiloxane and octamethyl cyclotetrasiloxane monomers (cyclic trimer and tetramer, respectively). Acidic sites of silica-alumina are responsible for the polymerization and variation in the acidity of the cat

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Based on the k, standardization method, a panoramic instrumental neutron activation analysis was applied to synthetic and natural silica samples and concentrations and/or detection knits were obtained for 58 elements. The Si content, expected to be ca. 46.7% by weight, was also determined as a crite