Abstract
DURING a study of the sorption of n-butanol and methanol vapours on silica gels in a vacuum system the formation of a by-product, identified as a silica-boron complex, was observed when the reaction was carried out in ‘Pyrex’ glassware. This by-product was not formed in a silica vessel and it was therefore concluded that the ‘Pyrex’ glassware was the source of the boron. Vacuum systems and techniques similar to those employed in this investigation are widely used in studying adsorption on oxide surfaces. It is thus important that workers in this field should be aware of the possible contamination of substrates by a volatile boron compound, and the consequent modification of the surface properties of the oxides.
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HÄNI, H., RUSSELL, J. Reaction of Silica Gel with a Volatile Boron Compound released from Borosilicate Glass. Nature Physical Science 235, 13–14 (1972). https://doi.org/10.1038/physci235013a0
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DOI: https://doi.org/10.1038/physci235013a0