Modified composite molecular sieve and preparation method thereof, and paraffin isomerization catalyst
US10392318B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 9, 2016 |
| Grant date | Aug 27, 2019 |
| Priority date | — |
| Expiry date | Apr 20, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a modified composite molecular sieve, and a preparation method and an application of the modified composite molecular sieve. The modified composite molecular sieve comprises SiO2 and a composite molecular sieve that comprises molecular sieve MCM-22 and crystalline molecular sieve selected from at least one of ZSM-22, ZSM-23 and ZSM-48, wherein, the molecular sieve MCM-22 covers around the crystalline molecular sieve. The present invention further provides a catalyst and an application of the catalyst. The catalyst comprises a carrier and a noble metal loaded on the carrier, wherein, the carrier comprises a modified composite molecular sieve that is the modified composite molecular sieve provided in the present invention or the modified composite molecular sieve obtained with the method provided in the present invention. The catalyst that utilizes the composite molecular sieve as a carrier not only can decrease the solidifying point of waxy raw oil, but also can improve the yield of liquid product, is especially applicable to the isomerization dewaxing process of lube distillate, and has an advantage of remarkably improving the viscosity index of lube …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.