Tavolaro et al., 1992 - Google Patents
Formation of MFI crystalline zeosilites from fluoride-containing silicate gelsTavolaro et al., 1992
- Document ID
- 11044955328529801444
- Author
- Tavolaro A
- Mostowicz R
- Crea F
- Nastro A
- Aiello R
- Nagy J
- Publication year
- Publication venue
- Zeolites
External Links
Snippet
Silicalite-1 samples are readily prepared at 170° C from F− containing gels of composition a HF-b NaF-cNaCI-d TPABr-e TPAOH-10 SiO 2-330 H 2 O with a+ b= 1 (constant F− content) and d+ e= 1.25 (constant TPA content). Large crystals of ca. 450 μm were found in some of …
- 239000000499 gel 0 title abstract description 24
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/26—Aluminium-containing silicates, i.e. silico-aluminates
- C01B33/28—Base exchange silicates, e.g. zeolites
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compound thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/113—Silicon oxides; Hydrates thereof
- C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
- C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
- C01B33/141—Preparation of hydrosols or aqueous dispersions
- C01B33/142—Preparation of hydrosols or aqueous dispersions by acidic treatment of silicates
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B37/00—Compounds having molecular sieve properties but not having base-exchange properties
- C01B37/02—Crystalline silica-polymorphs, e.g. silicalites dealuminated aluminosilicate zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/70—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65
- B01J29/7007—Zeolite Beta
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10479692B2 (en) | Zeolite production method | |
| Caullet et al. | Synthesis of zeolite Beta from nonalkaline fluoride aqueous aluminosilicate gels | |
| Tavolaro et al. | Formation of MFI crystalline zeosilites from fluoride-containing silicate gels | |
| Famine et al. | Synthesis of molecular sieve [B]-BEA and modification of the boron site | |
| JP2000178022A (en) | Tin(ii) silicate molecular sieve having zeolite beta- structure | |
| WO2017038662A1 (en) | Method for producing aei zeolite | |
| US5010048A (en) | Catalyst of the gallosilicate type and its utilization of light C2 C4 gases | |
| Bhat et al. | Synthesis of zeolite beta using silica gel as a source of SiO2 | |
| Crea et al. | Synthesis of silicalite 1 from systems with different TPABr/SiO2 ratios | |
| US5389357A (en) | Modified crystalline aluminosilicate zeolites and process for their preparation | |
| Mostowicz et al. | Crystallization of silicalite-1 in the presence of fluoride ions | |
| Mostowicz et al. | The synthesis of silicalite-2 and silica-ZSM-48 from hydrogels containing tetrabutylammonium bromide, hexamethonium bromide, and diaminododecane in the presence of fluoride ions | |
| US4684511A (en) | Process for the halogen modification of aluminophosphate molecular sieves and a product so produced | |
| Wenyang et al. | Nonaqueous synthesis of ZSM-35 and ZSM-5 | |
| JP2000185912A (en) | Crystalline titanosilicate zeolite and method for producing the same | |
| Mintova et al. | Kinetic investigation of the effect of Na, K, Li and Ca on the crystallization of titanium silicate ETS-4 | |
| KR20050072088A (en) | Process for the preparation of doped pentasil-type zeolites using doped faujasite seeds | |
| JP4470003B2 (en) | High silica mordenite and its synthesis method | |
| JP4639713B2 (en) | Method for synthesizing high purity high silica mordenite | |
| Nigro et al. | Synthesis and characterization of ZSM-5 in fluoride medium: the role of NH4+ and K+ cations | |
| Fonseca et al. | The effect of thermal treatment and of grinding on silicalite-1 synthesized in the presence of fluoride ions | |
| Nigro et al. | The role of alkali cations in the synthesis of Ga-ZSM-5 in fluoride medium | |
| Mostowicz et al. | The influence of alkali cation on the synthesis of zeolite beta from fluoride containing gels | |
| JP3244512B2 (en) | Modified crystalline aluminosilicate zeolite and its preparation | |
| US5000931A (en) | Halogen modification of aluminophosphate molecular sieves |