1988
DOI: 10.1016/0022-3093(88)90021-x
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Shrinkage behavior of silica gels during drying

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Cited by 20 publications
(7 citation statements)
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“…It is well known that the higher the alcohol content of the pore gel, the lower the bulk density of the drying gel [9]. As described above, alcohol is not only a solvent, but also a byproduct of the reaction.…”
mentioning
confidence: 97%
“…It is well known that the higher the alcohol content of the pore gel, the lower the bulk density of the drying gel [9]. As described above, alcohol is not only a solvent, but also a byproduct of the reaction.…”
mentioning
confidence: 97%
“…The addition of zinc to the Ag-SiO 2 -Al 2 O 3 catalyst does not change the BET area, which is considered to be very suitable for the manufacture of HCHO [22]. Catalysts with larger BET area show poor selectivity toward HCHO because of the further decomposition of HCHO to CO and H 2 in the small pores located in the catalysts; this is one of the reasons why the high BET surface area will do harm to this reaction.…”
Section: Catalyst Characterizationsmentioning
confidence: 98%
“…Chemical interaction with formation fluids could perhaps facilitate a progressive transformation into new, stable solid phases over time. On the other hand, the gradual loss of boundwater or crystallization of the gel phase (typically involving densification) could also lead to undesirable shrinkage effects [102]. Analogous to the drawbacks identified for organics-based sealants [46], confident use of silicate(hydrate)-based gels in wellbore P and A applications would therefore require further research with respect to their longevity in downhole environments.…”
Section: Conclusion and Implications For Applicability To Wellboresmentioning
confidence: 99%