CATALYTIC FILTER FOR FILTERING A GAS, COMPRISING A JOINT CEMENT INCORPORATING A GEOPOLYMER MATERIAL
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United States of America Patent
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Issued Date -
May 23, 2013
app pub date -
Jun 14, 2011
filing date -
Jun 15, 2010
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention relates to a filter structure, for filtering particulate-laden gases, comprising a plurality of honeycomb filtering elements, said structure being obtained by assembling said elements, which are joined together by means of a joint cement, said joint cement being an essentially inorganic, preferably mineral, composite comprising at least:
- between 30 and 95% by weight of a filler formed by an assembly of grains, the melting point of which is above 1000° C., said grains having a diameter of greater than 30 microns; andbetween 5 and 70% by weight of a binder matrix incorporating a geopolymer phase, said binder matrix comprising, in percentages by weight of the corresponding oxides:SiO2: between 20 and 80%,Al2O3: between 3 and 50% andR2′O: between 3 and 30%, R2′O representing the sum of the alkali metal oxides present in the binder matrix.
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