Preparation of zeolite ZSM-5 membrane by electrophoretic deposition method

Abdollahi, Meisam; Ashrafizadeh, Seyed Nezameddin; Malekpour, Akbar

doi:10.1016/j.micromeso.2007.02.051

Cited by 21 publications

(12 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…oxygen tetrahedrons, migrate towards the positively charged electrode. [19] Zirconium phosphate is highly acidic owing to its large number of phosphate groups; its isoelectric point should therefore occur at a low pH, as with zeolites. On application of a constant voltage to electrodes, zirconium phosphate in slurry deposits only foam that is negatively charged.…”

Section: Resultsmentioning

confidence: 99%

Zirconium Phosphate Coating on Aluminum Foams by Electrophoretic Deposition for Acidic Catalysis

2011

View full text Add to dashboard Cite

The electrophoretic deposition method has been applied for the formation of an amorphous zirconium phosphate layer on the surface of open‐cell aluminum foam. The aluminum foam was fully and uniformly covered by the zirconium phosphate layer with a good mechanical adherence to the support. The obtained composites were characterized by using XRD, SEM and nitrogen adsorption. The coated aluminum foams showed high catalytic activity in the dehydration of fructose to 5‐hydroxymethylfurfural. This method of foam coating is much more convenient and effective than the traditional washcoating procedure, avoiding the anodization pretreatment of the foam to increase adherence.

show abstract

Section: Resultsmentioning

confidence: 99%

Zirconium Phosphate Coating on Aluminum Foams by Electrophoretic Deposition for Acidic Catalysis

2011

View full text Add to dashboard Cite

show abstract

“…Pervaporation studies with a NaA membrane have been previously reported for water removal from highly concentrated 2-propanol solutions. Related results showed that NaA and ZSM-5 membranes achieved a very high separation factor and good permeation flux for removal of water (Abdollahi et al, 2007;Malekpour et al, 2008). Table 1 shows the separation factors and fluxes obtained in the pervaporation of 90 wt% 2-propanolwater solutions by as-synthesized membranes.…”

Section: Resultsmentioning

confidence: 94%

Desalination of aqueous solutions by LTA and MFI zeolite membranes using pervaporation method

Malekpour

Samadi‐Maybodi

Sadati

2011

Braz. J. Chem. Eng.

Self Cite

View full text Add to dashboard Cite

-LTA and MFI zeolite membranes were hydrothermally grown on the surface of an α-alumina porous support. The synthesized membranes were used for removal of cationic and anionic species from aqueous solutions by the pervaporation method. The perfection of the membranes was improved by employing the multi-stage synthesis method. The membranes were characterized by XRD, SEM and IR methods. The membranes were initially evaluated by the pervaporation separation of water from aqueous 2-propanol mixtures. The separation factors obtained were 7081 and 105 for NaA and ZSM-5 membranes, respectively. The ability of membranes for desalination of some aqueous solutions containing I -, Cs + and Sr 2+ ions was examined in various conditions. These ionic species were chosen because of their importance in the nuclear sciences. Both membranes effectively removed (more than 99 wt%) I -, Cs + and Sr 2+ from their singlesalt solutions (0.001mol dm -3 ) over a temperature range of 298-338 K. The effects of parameters such as time and temperature on the separation factors and fluxes were investigated. This work shows that, due to their excellent chemical, thermal and mechanical stability, the zeolitic membranes are useful for desalination of aqueous solutions and treating saline wastewaters by pervaporation. Therefore, this method has the ability to desalinate harsh environment solutions involving strong solvent and radioactive components.

show abstract

“…Since Mintova et al successfully prepared a thin continuous ZSM‐5 film on quartz substrate by organic template‐free synthesis route, as attracted an increasing interest for preparation of the ZSM‐5 membranes and films . Many attempts were made to obtain a continuous defect‐free ZSM‐5 membranes by this synthesis route for the application to separate water from isopropanol/water mixture . Noack et al reported the preparation of ZSM‐5 membranes on porous support from a synthesis gel with Si/Al about 50 without organic template.…”

Section: Introductionmentioning

confidence: 99%

High performance ZSM‐5 membranes on coarse macroporous α‐Al₂O₃ supports for dehydration of alcohols

Yang

et al. 2016

AIChE Journal

View full text Add to dashboard Cite

High-performance ZSM-5 membranes with a low Si/Al ratio of 10.3 were prepared on cheap coarse macroporous aAl 2 O 3 tubes by fluoride route without organic template. The effects of crystallization time and aluminum source on the growth, morphology and pervaporation (PV) performances of the as-synthesized membranes were investigated. The feasibility of preparing ZSM-5 membranes with different Si/Al ratio which was implemented by using different Al 2 (SO 4 ) 3 Á18H 2 O content in synthesis gel were discussed. It was found that the aluminum source had significant effect on the synthesis of membranes. The ZSM-5 membranes prepared by using Al 2 (SO 4 ) 3 Á18H 2 O as an aluminum source from synthetic gel with composition of 1SiO 2 /0.05Al 2 O 3 /0.17Na 2 O/0.9NaF/45H 2 O showed high reproducibility and high PV performance with flux of 3.85 kg/(m 2 Áh) and separation factor of higher than 10,000 in dehydration of 90 wt % iPrOH/H 2 O at 348 K. Moreover, the ZSM-5 membranes exhibited high water perm-selectivity performance for dehydration of 90 wt % n-PrOH/H 2 O, n-BtOH/H 2 O, and i-BtOH/H 2 O mixtures, respectively.

show abstract

Preparation of zeolite ZSM-5 membrane by electrophoretic deposition method

Cited by 21 publications

References 22 publications

Zirconium Phosphate Coating on Aluminum Foams by Electrophoretic Deposition for Acidic Catalysis

Zirconium Phosphate Coating on Aluminum Foams by Electrophoretic Deposition for Acidic Catalysis

Desalination of aqueous solutions by LTA and MFI zeolite membranes using pervaporation method

High performance ZSM‐5 membranes on coarse macroporous α‐Al₂O₃ supports for dehydration of alcohols

Contact Info

Product

Resources

About

Preparation of zeolite ZSM-5 membrane by electrophoretic deposition method

Cited by 21 publications

References 22 publications

Zirconium Phosphate Coating on Aluminum Foams by Electrophoretic Deposition for Acidic Catalysis

Zirconium Phosphate Coating on Aluminum Foams by Electrophoretic Deposition for Acidic Catalysis

Desalination of aqueous solutions by LTA and MFI zeolite membranes using pervaporation method

High performance ZSM‐5 membranes on coarse macroporous α‐Al2O3 supports for dehydration of alcohols

Contact Info

Product

Resources

About

High performance ZSM‐5 membranes on coarse macroporous α‐Al₂O₃ supports for dehydration of alcohols