Patent ID: 8092740

Claim:
A method of manufacturing a porous material comprising: providing silicon carbide particles and a cordierite forming material containing an Al source, an Si source, and an Mg source to form a mixture; and forming cordierite by firing the mixture; wherein inorganic microballoons containing SiO 2 and Al 2 O 3 define part or all of the Al source and the Si source; wherein a total content of the Si source and the Al source contained in the inorganic microballoons with respect to a total content of the inorganic microballoons is 95 mass % or more when the Si source is converted to SiO 2 and the Al source is converted to Al 2 O 3 ; and wherein a total content of a sodium compound and a potassium compound contained in the inorganic microballoons with respect to the total content of the inorganic microballoons is 2 mass % or less when the sodium compound is converted to Na 2 O and the potassium compound is converted to K 2 O.