JP2013220963A5

JP2013220963A5 -

Info

Publication number: JP2013220963A5
Application number: JP2012092439A
Authority: JP
Filing date: 2012-04-13
Publication date: 2015-04-30
Anticipated expiration: 2032-04-13

Description

前記一次焼成は、１１５０℃〜１３００℃の温度範囲で行われることが好ましい。前記二次焼成は、３００℃〜７００℃または７００℃〜９００℃の温度範囲において１時間〜２４時間にわたって行われることが好ましい。焼成物は、２〜５０ナノメーターの範囲のメソ細孔及び２ナノメーター以下のマイクロ細孔を有することが好ましい。 The primary firing is preferably performed in a temperature range of 1150 ° C to 1300 ° C. The secondary firing is preferably performed in a temperature range of 300 ° C. to 700 ° C. or 700 ° C. to 900 ° C. for 1 to 24 hours. The fired product preferably has mesopores in the range of 2 to 50 nanometers and micropores of 2 nanometers or less.

なお、Ｈ^＋は実際にはＯＨ_３ ^＋：ヒドロニウムイオンとされる。従って、中性の水に１×１０^−７ｍｏｌ／Ｌ程存在した［ＯＨ_３ ^＋］が、当該セラミックスを浸漬して１２時間後には１×１０^−１０ｍｏｌ／Ｌ以下にまで減少し、逆に［ＯＨ^―］が１×１０^−７ｍｏｌ／Ｌから１×１０−^４ｍｏｌ／Ｌ以上にまで増加したことになる。ｐＨメーターは水素イオン濃度を水素イオンの濃淡電池の原理で直接測定しており、セラミックス浸漬水において水素イオン濃度が減少していることは明白である。 H ⁺ is actually OH ₃ ⁺ : hydronium ion. Therefore, [OH ₃ ⁺ ], which was present in neutral water by about 1 × 10 ⁻⁷ mol / L, decreased to 1 × 10 ⁻¹⁰ mol / L or less after 12 hours of immersion of the ceramic, [OH ^-] it is increased it up to 1 × ^10- 4 mol / L or more from 1 × ¹⁰ -7 mol / L to. The pH meter directly measures the hydrogen ion concentration based on the principle of a hydrogen ion concentration cell, and it is clear that the hydrogen ion concentration is reduced in the ceramic immersion water.

Claims

A functional ceramic obtained by first firing a ceramic material containing charcoal and iron oxide, and then second firing with superheated steam.

The functional ceramic according to claim 1, wherein the ceramic material includes at least one of a rock ground material, a ceramic raw material including silicic acid and alumina, a silicon compound, an aluminum compound, and shell ash .

The functional ceramic according to claim 1, wherein the charcoal includes at least one of charcoal, bamboo charcoal, coffee charcoal, coconut shell charcoal, coal coke, and petroleum coke.

The functional ceramic according to claim 1, wherein the ceramic material includes at least one of zirconium, silver, palladium, gold, platinum, manganese, titanium, tungsten, yttrium, cerium, and neodymium.

The functional ceramic according to claim 1, which has mesopores in the range of 2 to 50 nanometers and micropores of 2 nanometers or less.

A primary firing step of firing a ceramic material containing charcoal and iron oxide;
A method for producing functional ceramics, comprising: secondary firing in which the ceramic material fired in the primary firing step is further fired with superheated steam.

The manufacturing method of the functional ceramics of Claim 6 including the process of creating the said ceramic material from at least one of the ceramic industry raw material containing a rock ground material, a silicic acid, and an alumina, a silicon compound, and an aluminum compound.

The method for producing a functional ceramic according to claim 6 , wherein the primary firing step is performed in a temperature range of 1150 ° C. to 1300 ° C.

The said secondary baking process is a manufacturing method of the functional ceramics of Claim 6 performed over 1 hour-24 hours in the temperature range of 300 to 700 degreeC or 700 to 900 degreeC.

The method for producing a functional ceramic according to claim 6 , wherein, in the primary firing step, the molded product of the ceramic material is covered with charcoal particles and accommodated in a fired sheath and fired.

A superheated steam generator for providing superheated steam for use in the method for producing a functional ceramic according to any one of claims 7 to 10 , wherein a tube filled with ceramic particles therein, and the tube from outside A superheated steam generator for generating superheated steam by introducing saturated steam into the tube and heating the ceramic particles maintained at a predetermined temperature.

A superheated steam baking furnace used in the method for producing a functional ceramic according to any one of claims 7 to 10 , wherein a cylindrical portion for storing a container of a sample to be fired therein is provided at a lower portion of the cylindrical portion. A steam heating unit that superheats steam to supply the cylinder part to the cylinder part, and a heating part that heats the cylinder part and the steam heating part from the outside, and the steam heating part is an overheat supplied from outside A superheated steam firing furnace in which a flow path for guiding water vapor to the cylindrical portion is formed, ceramic particles are filled therein, and the superheated steam is heated by the ceramic particles maintained at a predetermined temperature.