C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 33/24 (2006.01)
Patent
CA 2594992
This invention relates to the preparation, functionalisation and use of a novel nano structured silicate, generally a calcium silicate which may be hydrated. It also relates to novel methods of producing nano structured silicates. The novel nano-structured silicate material comprises a calcium silicate in the form of platelets of about 5-10 nm thick and about 50-500 nm wide or wider stacked together in a poorly ordered framework type structure as illustrated in Figure 1. The novel material can be prepared by reacting a calcium ion containing solution with a silicate containing solution under controlled conditions and then allowing the calcium silicate to age. The novel silicate has pores of a high volume and which are readily accessible. This provides a high oil absorption capacity and high surface area. Novel nano- structured silicate materials are produced by the invention having an oil absorption capacity up to 700g.oil.100g-1 silicate and a surface area up to 600m2g-1. The novel material can be functionalised to yield a material having a variety of uses.
L'invention porte: sur la préparation, la fonctionnalisation et l'utilisation d'un nouveau silicate nano-structuré, normalement un silicate de calcium pouvant être hydraté, et sur de nouveaux procédés de production de silicates nano-structurés. Le nouveau silicate nano-structuré est un silicate de calcium se présentant sous la forme de plaquettes d'environ 5-10 nm d'épaisseur et d'au moins environ 50-500 nm de largeur, empilées dans une structure faiblement ordonnée; on peut le préparer en faisant réagir une solution contenant un ion calcium avec une solution contenant un silicate dans des conditions contrôlées, puis en laissant vieillir le silicate de calcium ainsi obtenu. Le nouveau silicate présente un volume important de pores facilement accessibles offrant une grande capacité d'absorption pouvant atteindre 700g.d'huile.100g-1 et une grande surface d'absorption pouvant atteindre 600m2g-1; il peut être fonctionnalisé pour donner des produits à usages variés.
Borrmann Thomas
Johnston James Howard
Mcfarlane Andrew James
Ridout & Maybee Llp
Victoria Link Limited
LandOfFree
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