Synthesis of NaX zeolite using silica from rice husk ash

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · Ind. Eng. Chem., Prod. Res. Dev.; (United States)

DOI:https://doi.org/10.1021/i300019a026· OSTI ID:6414007

Dalal, A K; Gokhale, K V.G.K.; Rao, M S

Sodium X zeolite has been synthesized by using rice husk ash as a source of silica for the first time. The synthesis has been carried out for temperatures ranging from 95 to 120 /sup 0/ C and duration of synthesis from 1 to 24 h with SiO/sub 2//AI/sub 2/O/sub 3/, Na/sub 2/O/AI/sub 2/O/sub 3/, and H/sub 2/O/AI/sub 2/O/sub 3/ molar ratios ranging from 2.0 to 7.0, 2.4 to 10.0, and 96.0 to 890.0, respectively. The roles of temperature, duration of synthesis, and composition of initial mix in the formation of NaX zeolite and the stability of NaX zeolite were studied. In the present study, it has been observed that the NaX zeolite can be synthesized from an initial mix with SiO/sub 2//AI/sub 2/O/sub 3/ and Na/sub 2/O/SiO/sub 2/ molar ratios varying from 3 to 5.5 and 0.75 to 2.22, respectively, and having H/sub 2/O/Na/sub 2/O molar ratios from 30 to 60 at 100 /sup 0/ C with reaction times of 6 to 8 h. The product at each stage has been characterized by X-ray diffraction analysis. Studies on the crystallization kinetics and morphological investigations for the formation of NaX zeolite were also carried out.

• Research Organization: Department of Chemical Engineering, Indian Institute of Technology, Kanpur
• OSTI ID: 6414007
• Journal Information: Ind. Eng. Chem., Prod. Res. Dev.; (United States), Journal Name: Ind. Eng. Chem., Prod. Res. Dev.; (United States) Vol. 24:3; ISSN IEPRA
• Country of Publication: United States
• Language: English

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ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ASHES
BIOMASS
CEREALS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
COHERENT SCATTERING
CRYSTALLIZATION
DIFFRACTION
ENERGY SOURCES
GRASS
HYDROGEN COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KINETICS
MANAGEMENT
MATERIALS
MINERALS
MORPHOLOGY
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PLANTS
PROCESSING
REACTION KINETICS
RENEWABLE ENERGY SOURCES
RESIDUES
RICE
SCATTERING
SILICA
SILICON COMPOUNDS
SILICON OXIDES
SODIUM COMPOUNDS
SODIUM OXIDES
STABILITY
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WATER
X-RAY DIFFRACTION
ZEOLITES