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Selective Capture of Water Using Microporous Adsorbents To Increase the Lifetime of Lubricants
Author(s) -
Ng EngPoh,
Delmotte Luc,
Mintova Svetlana
Publication year - 2009
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.200800234
Subject(s) - microporous material , lubricant , aluminosilicate , adsorption , chemical engineering , materials science , selectivity , fourier transform infrared spectroscopy , organic chemistry , chemistry , catalysis , composite material , engineering
Long live lubricants : The selective capture of water from lubricants using nanosized microporous aluminophosphate (AEI) and aluminosilicate materials was studied. Nearly 98 % of the moisture was removed from the lubricating oil under ambient conditions, resulting in a significant improvement in the lubricating service lifetime. Moreover, both the lubricant and the microporous sorbents can be recovered and reused.The selective capture of water from lubricants using nanosized microporous aluminophosphate and aluminosilicate materials was studied with an aim to increase the lifetime of the lubricating mineral oil. The amount of water present in oxidized lubricating oil before and after treatment with microporous materials was studied by FTIR spectroscopy and determined quantitatively using the Karl Fischer titration method. Nanosized aluminophosphate revealed a high selectivity for water without adsorbing other additives, in contrast to nanosized aluminosilicates which also adsorb polar oxidation products and ionic additives. About 98 % of the initial moisture could be removed from the lubricating oil under ambient conditions, resulting in a significant improvement in the lubricating service lifetime. Moreover, no by‐products are formed during the process and both the lubricant and the sorbents can be recovered and reused, thus the method is environmentally friendly.