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Investigation of physico-chemical and catalytic properties of silica-alumina gels

✍ Scribed by Elżbieta Fedoryńska; Tomasz Woźniewski; Stanisław Malinowski; Idris Ahmed; Anna Madura

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
441 KB
Volume
69
Category
Article
ISSN
0021-9797

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Microwave Dielectric Relaxation of Bound
Microwave Dielectric Relaxation of Bound Water to Silica, Alumina, and Silica–Alumina Gel Suspensions
✍ Tomoyuki Ishida; Tomoyuki Makino 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 103 KB

By the use of a time domain reflectomery method, dielectric measurements were carried out on silica, alumina, and silicaalumina gel suspensions (five types with composition varying between 0.3 < Si/Al atomic ratio <0.8) in the frequency range of 100 kHz to 20 GHz. For all the gels, a relaxation peak