Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – Including organic component
Patent
1987-07-17
1994-11-15
Derrington, James
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
Including organic component
252378R, 4231181, 501148, 502 63, 502 80, 502 84, B01J 2116, B01J 2012
Patent
active
053648234
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to a method for manufacturing inorganic porous layered members and, more particularly, to a manufacturing method for an inorganic porous layered member which shows high heat insulation properties by having been calcined with a sufficient distance retained between respective layers.
BACKGROUND OF THE INVENTION
As layered compounds which form a porous layered member, in general, there may be enumerated such intercalation substances as have been disclosed in, for example, Japanese Patent Application Laid-Open Publications Nos. 54-5884 and 54-16386, in which a foreign substance such as hydroxide or the like is intercalated for reaction between respective layers of a layered compound showing swelling characteristics. In these intercalation substances, however, there remains a problem that, in practice, the distance between the layers is so small as to be less than 10.ANG. so that the substances will be easily affected by adsorbed water and heat insulation properties at any satisfactory level cannot be achieved.
On the other hand, there have been disclosed in, for example, Japanese Patent Application Laid-Open Publications Nos. 60-131,878 and 60-137,812 porous layered members that are obtained by using a water-soluble high polymer and a finely porous smectite-type clay which are mixed to introduce polymer between clay layers, and then intercalating a cation is oxide or polymeric silica. In these porous layered members, the distance between the layers can be expanded to an extent of 30.ANG., but still there remains the problem that no sufficient distance for reducing or eliminating the influence of adsorbed water can be ensured between the layers.
SUMMARY OF THE INVENTION
Accordingly, the object of the present invention is to provide a method for manufacturing an inorganic porous layered member in which the distance between the layers can be made sufficiently large, and which can be provided with high heat insulation properties by a calcination treatment during the manufacturing steps.
The above object can be attained by providing a method for manufacturing the inorganic porous layered member, which method being characterized in that a layered compound showing swelling characteristics is subjected to a swelling, and inorganic and organic pillars are intercalated between layers of the layered compound, dried and calcined so as to from fine gaps between the layers of the layered compound.
BRIEF EXPLANATION OF DRAWINGS
FIG. 1 is a schematic view of the inorganic porous layered member produced according to method of the present invention;
FIG. 2 is a schematic view of the layered compound showing the swelling characteristics which forms a base material of the inorganic porous layered member of FIG. 1;
FIG. 3 is an explanatory view showing the swelling step in the method of manufacturing the inorganic porous layered member according to the present invention;
FIG. 4 is an explanatory view of the inorganic pillar formed from a colloidal inorganic compound or hydrolyzed metallic alcoholate, that is employed in the manufacturing method of the present invention;
FIG. 5 is an explanatory view of a reaction product of the inorganic pillar after having been surface-modified for use in the manufacturing method of the present invention; and
FIG. 6 is an explanatory view of the step of intercalating the reaction product of FIG. 5 together with the organic pillar between the layers of the swelling layered compound in the manufacturing method of the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS ACCORDING TO THE INVENTION
Referring to FIG. 1, the structure of an inorganic porous layered member 10 obtained according to the manufacturing method of the present invention is schematically shown, and this porous member 10 comprises many pieces of inorganic layered compound 12 obtained by causing a swellable inorganic layered compound to swell. An inorganic compound 16 is intercalated and fixed between the respective layers 14 of the inorganic layered compound 1
REFERENCES:
patent: 4176090 (1979-11-01), Vaughan et al.
patent: 4248739 (1981-02-01), Vaughan et al.
patent: 4271043 (1981-06-01), Vaughan et al.
patent: 4629713 (1986-12-01), Suzuki et al.
patent: 4631091 (1986-12-01), Goodman
Hirao Shozo
Kishimoto Takashi
Takahama Koichi
Yokokawa Hiroshi
Yokoyama Masaru
Derrington James
Matsushita Electric & Works Ltd.
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