FIELD: chemistry.
SUBSTANCE: invention relates to methods of producing high-silica zeolite which is used as a catalyst component, particularly in dewaxing catalysts. The method involves preparation of a suspension of powdered silica gel in aqueous sodium hydroxide solution, preliminary crystallisation at temperature 100-120°C for 8-12 hours, cooling, adding aqueous sodium aluminate solution and crystallisation of the mixture at temperature 150-170°C for 6-24 hours.
EFFECT: cutting duration of the zeolite synthesis process, reducing the size of zeolite crystals while maintaining high crystallinity of the product.
2 tbl, 7 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING HIGH-SILICA ZEOLITES | 1999 |
|
RU2156735C1 |
| METHOD FOR PRODUCING HIGH-SILICA ZEOLITES | 1997 |
|
RU2103226C1 |
| METHOD OF PRODUCING ZEOLITE OF STRUCTURAL TYPE ZSM-5 WITHOUT USING TEMPLATE | 2023 |
|
RU2813194C1 |
| ZEOLITE-CONTAINING CATALYST OR OIL FRACTION DEWAXING | 2012 |
|
RU2518468C2 |
| METHOD OF PRODUCING ZEOLITE WITH MTW STRUCTURE (ZSM-12 TYPE) | 2019 |
|
RU2737525C1 |
| METHOD OF PRODUCING ZEOLITE OF MEL TYPE | 2018 |
|
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| MFI GRANULATED CRYSTALLINE ZEOLITE WITHOUT BINDER AND METHOD FOR MANUFACTURING THEREOF | 2018 |
|
RU2675018C1 |
| GRANULATED ZEOLITE ZSM-5 WITHOUT BINDER AND METHOD FOR PRODUCTION THEREOF | 2019 |
|
RU2739350C1 |
| GRANULATED ZEOLITE ZSM-5 WITHOUT BINDER AND METHOD FOR PRODUCTION THEREOF | 2019 |
|
RU2713449C1 |
| METHOD FOR OBTAINING MFI ZEOLITE | 2017 |
|
RU2640236C1 |
