摘要:
The present invention provides and produces a high-grade layered double hydroxide (LDH) dense body having a relative density of 88% or greater in a simple and stable manner. The present invention provides a LDH dense body including a layered double hydroxide as a main phase and having a relative density of 88% or greater, the LDH being represented by general formula: M2+1-xM3+x(OH)2An−x/n.mH2O wherein M2+ is a divalent cation, M3+ is a trivalent cation, An− is an n-valent anion, n is an integer of 1 or greater, and x is 0.1 to 0.4. This LDH dense body can be produced by compacting and firing a raw material powder of a LDH to obtain an oxide fired body, retaining this oxide fired body in or immediately above an aqueous solution comprising an n-valent anion to reproduce the LDH, and removing excessive water from the resulting water-rich LDH solidified body.
摘要:
A method for manufacturing a honeycomb structure 20 according to the present invention includes the steps of burying a burial base material into pores of a porous honeycomb base material which has a SiC phase and an oxide phase containing a Si oxide, where the burial base material contains metal Si particles having a particular diameter smaller than the pore diameter of the pore and metal Al particles having a particle diameter smaller than the pore diameter of the pore, and melting the metal Si particles and the metal Al particles, which are contained in the burial base material, by heating the porous honeycomb base material including the buried burial tease material in an inert atmosphere, so as to form a metal phase containing metal Si and metal Al in pores of the porous honeycomb base material.