| 摘要 |
PROBLEM TO BE SOLVED: To provide a synthetic method of a highly functional zeolite of a desired shape (A, X, and Y type) not containing more heavy metals than the values regulated by the environmental standard. SOLUTION: In a synthetic method of a zeolite by an alkali hydrothermal reaction from a solid material containing silica and/or alumina, this method can obtain a desired zeolite at a high synthetic rate while restraining side reactions by, before the zeolite synthetic reaction, mixing the material with an alkali aqueous solution, heating to a required temperature to enhance dissolution in a heating process, enhancing dissolution of silica and/or alumina components in a dissolution process, regulating the temperature to a suitable temperature for synthesizing a desired type of zeolite such as A, X, and Y type, then adding an SiO<SB>2</SB>source and an Al<SB>2</SB>O<SB>3</SB>source necessary to obtain a suitable composition for synthesizing the zeolite. COPYRIGHT: (C)2006,JPO&NCIPI
|
