Nothing Special   »   [go: up one dir, main page]

Xiao et al., 2017 - Google Patents

Mechanism on solvent-free crystallization of NaA zeolite

Xiao et al., 2017

Document ID
3537806375244584711
Author
Xiao Y
Sheng N
Chu Y
Wang Y
Wu Q
Liu X
Deng F
Meng X
Feng Z
Publication year
Publication venue
Microporous and Mesoporous Materials

External Links

Snippet

It is of great importance to deeply understand the crystallization mechanism of zeolite in both fundamental research and industrial applications. Here we have systemically investigated the crystallization of zeolite NaA using hydrated silica (SiO 2· 3H 2 O) and sodium aluminate …
Continue reading at www.sciencedirect.com (other versions)

Classifications

    • 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
    • C01B39/46—Other types characterised by their X-ray diffraction pattern and their defined composition
    • C01B39/48—Other types characterised by their X-ray diffraction pattern and their defined composition using at least one organic template directing agent
    • 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
    • C01B39/04—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 using at least one organic template directing agent, e.g. an ionic quaternary ammonium compound or an aminated compound
    • 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
    • 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
    • C01B39/06—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis
    • C01B39/08—Preparation of isomorphous zeolites characterised by measures to replace the aluminium or silicon atoms in the lattice framework by atoms of other elements, i.e. by direct or secondary synthesis the aluminium atoms being wholly replaced
    • C01B39/085—Group IVB- metallosilicates
    • 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
    • C01B39/36—Pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11
    • C01B39/38—Type ZSM-5
    • 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
    • C01B37/06—Aluminophosphates containing other elements, e.g. metals, boron
    • C01B37/08—Silicoaluminophosphates (SAPO compounds), e.g. CoSAPO
    • 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
    • C01B39/54—Phosphates, e.g. APO or SAPO compounds
    • 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
    • C01B31/00—Carbon; Compounds thereof
    • C01B31/02—Preparation of carbon; Purification; After-treatment
    • C01B31/04—Graphite, including modified graphite, e.g. graphitic oxides, intercalated graphite, expanded graphite or graphene
    • 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
    • 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
    • C01B37/04—Aluminophosphates (APO compounds)

Similar Documents

Publication Publication Date Title
Xiao et al. Mechanism on solvent-free crystallization of NaA zeolite
Kamimura et al. OSDA-free synthesis of MTW-type zeolite from sodium aluminosilicate gels with zeolite beta seeds
Zhang et al. Rational synthesis of Beta zeolite with improved quality by decreasing crystallization temperature in organotemplate-free route
Wu et al. Dual template synthesis of a highly mesoporous SSZ-13 zeolite with improved stability in the methanol-to-olefins reaction
Kamimura et al. Seed-assisted, OSDA-free synthesis of MTW-type zeolite and “Green MTW” from sodium aluminosilicate gel systems
Prasetyoko et al. Conversion of rice husk ash to zeolite beta
Honda et al. Influence of seeding on FAU–∗ BEA interzeolite conversions
Xue et al. Facile synthesis of nano-sized NH4-ZSM-5 zeolites
Yue et al. Seed-assisted, template-free synthesis of ZSM-5 zeolite from natural aluminosilicate minerals
Wang et al. Nanoporous zeolite single crystals: ZSM-5 nanoboxes with uniform intracrystalline hollow structures
Luo et al. Synthesis of ZSM-5 aggregates made of zeolite nanocrystals through a simple solvent-free method
Yashiki et al. Hydrothermal conversion of FAU zeolite into LEV zeolite in the presence of non-calcined seed crystals
Zhang et al. Facile fabrication of mesopore-containing ZSM-5 zeolite from spent zeolite catalyst for methanol to propylene reaction
Zhang et al. Organotemplate-free synthesis of high-silica ferrierite zeolite induced by CDO-structure zeolite building units
Gao et al. Insight into solvent-free synthesis of MOR zeolite and its laboratory scale production
Chu et al. Size-controlled synthesis of hierarchical ferrierite zeolite and its catalytic application in 1-butene skeletal isomerization
Wang et al. Seed-directed and organotemplate-free synthesis of TON zeolite
Cheng et al. Effect of aluminum on the formation of zeolite MCM-22 and kenyaite
Lv et al. Hydrothermal synthesis of high-silica mordenite by dual-templating method
Díaz et al. On the mechanism of zeolite growing: Crystallization by seeding with delayered zeolites
Kamimura et al. Synthesis of hydrophobic siliceous ferrierite by using pyridine and sodium fluoride
Zhang et al. Synthesis of large mordenite crystals with different aspect ratios
Ma et al. Mordenite zeolite with ultrahigh SiO2/Al2O3 ratio directly synthesized from ionic liquid-assisted dry-gel-conversion
Mohamed et al. Synthesis of high silica mordenite nanocrystals using o-phenylenediamine template
Ghrear et al. Synthesis of Cs-ABW nanozeolite in organotemplate-free system