Interaction of water vapor with silica surfaces

Young, G. J.

doi:10.1016/0095-8522(58)90010-2

“…A critical comparison of various data in literature regarding the threshold temperature at which the physically adsorbed water comes off from the hydroxylated surface of amorphous silica reveals the following. The value of T B =190°C practically coincides with T B =180°C obtained earlier by Young and Bursh [41,51]. In our opinion this value of T B =190 9 10°C holds true for various amorphous silica samples having different structural characteristics.…”

Section: Boundary Temperature For Remo6ing Physically Adsorbed Water supporting

confidence: 70%

“…At first this surface corresponds to the maximum level of hydroxylation, while at the end of the heating at high temperature it becomes strongly dehydroxylated. In its appearance the thermogram (curve 9) is similar to the thermal kinetic curve obtained by Young [41]. Its asymmetric form also indicates the energetic non-uniformity of the surface.…”

Section: Dehydroxylation and Rehydroxylation Of The Silica Surface Dsupporting

confidence: 53%

“…Young and Bursh investigated the interaction of water vapor with the surface of amorphous silica using different methods (thermal analysis, heat of immersion in water and others) [41,51]. On the basis of these results the authors concluded that the dexydroxylation of surface OH groups begins at 180°C.…”

Section: Boundary Temperature For Remo6ing Physically Adsorbed Water mentioning

confidence: 99%

“…1(b)). It has been pointed out in the literature [35,37,38,41,121] that complete hydroxylation of the surface can be achieved only for those samples of silica which were subjected to preliminary treatment at temperatures below 400°C. After calcination at higher temperature only partial rehydroxylation takes place.…”

Section: As a Set Of Physico-chemical Constants (At Fixed Temperatures)mentioning

confidence: 99%

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“…What appears to be a rather straightforward process is indeed a very complex phenomenon and neither experiments nor computer simulation have clarified why the surface of an amorphous silica sample heated at high T (>1000 K) will not return to the pristine situation after water adsorption of the thermally treated material, whereas this happens for lower treatment temperatures. 32,33 Despite its being such a common material, the synthesis of silica, either in gaseous phase as pyrogenic silica or in solution, has only been achieved on the first half of the 20 th century, with the development of the sol-gel synthesis technique. 13 Starting from the 1960s, silica materials have become the subject of intense academic research and industrial application.…”

Section: Introductionmentioning

confidence: 99%

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

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et al. 2013

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Surface electrical resistivity and wettability study of fused silica

Senn

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Pigram

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Liesegang

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Surf. Interface Anal.

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Interaction of water vapor with silica surfaces

Cited by 369 publications

References 13 publications

The surface chemistry of amorphous silica. Zhuravlev model

The surface chemistry of amorphous silica. Zhuravlev model

Silica Surface Features and Their Role in the Adsorption of Biomolecules: Computational Modeling and Experiments

Surface electrical resistivity and wettability study of fused silica

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