Synthesis of zeolite-A using kaolin samples from Darazo, Bauchi state and Ajebo, Ogun state in Nigeria

Mgbemere, Henry E.; Lawal, G. I.; Ekpe, I.C.; Chaudhary, Anna‐Lisa

doi:10.4314/njt.v37i1.12

Cited by 17 publications

(10 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Zeolites are made up of an aluminosilicate framework's basic structure, which consists of four oxygen anions (O 2-) surrounding a tetrahedral arrangement of silicon (Si 4+ ) and aluminum (Al 3+ ) ions [21]. Si-O and Al-O bonds contain oxygen ions connected to two cations shared by two tetrahedron structures [22]. As a result, SiO4/2 is tetravalent electroneutral, and AlO4/2 is trivalently negatively charged [23].…”

Section: Zeolitesmentioning

confidence: 99%

The Role of Zeolite (Microporous Crystalline Aluminosilicates) In Catalytic Pyrolysis of Waste High- and Low-Density Polyethylene Bags for Production of Fuel and Chemicals: A Review

Jibreel,

Bayero,

Mohamaed

et al. 2024

Ind. J. Chem. Anal.

View full text Add to dashboard Cite

This review provides a state-of-the-art summary of the role which zeolite plays as a catalyst via pyrolysis as a way of recovering fuels and chemicals from waste high and or low density polyethylene bags. It also highlighted the two types of zeolite (natural or synthetic) which are used as a two-stage pyrolysis−catalysis in giving a free waxing product to pure fuel and chemicals which can be subjected to further analyzing and or upgrading. As yield of oil/wax decreased with the addition of a zeolite as catalyst from 44 and 51 wt.%, (depending on the waste high density polyethylene “HDPE” or low density polyethylene bags “LDPE” and other factors). However, the composition of the pyrolysis−catalysis oils significantly increased in aromatic hydrocarbon content accordingly. In addition, the composition of the oils shifted from high molecular weight hydrocarbons (C16+) to fuel range hydrocarbons (C5−C15), with a high content of single-ring aromatic hydrocarbons such as benzene, toluene, ethylbenzene, xylenes, and styrene. This process shows great potential for production of fuels or chemicals, and also addresses the urgent issue of waste HDPE and or LDPE disposal.

show abstract

Section: Zeolitesmentioning

confidence: 99%

The Role of Zeolite (Microporous Crystalline Aluminosilicates) In Catalytic Pyrolysis of Waste High- and Low-Density Polyethylene Bags for Production of Fuel and Chemicals: A Review

Jibreel,

Bayero,

Mohamaed

et al. 2024

Ind. J. Chem. Anal.

View full text Add to dashboard Cite

show abstract

“…As a porous material, zeolite 4A has various uses, including water purification and toxic heavy metals removal (Rahman et al, 2018;Wu et al, 2018;Al-Jubouri et al, 2019), adsorbent (Wang et al, 2019) , catalysts, ion exchange membranes, and molecular sieve (Ginting et al, 2019) . The source of silica in the synthesis of zeolite 4A can come from kaolin (Du and Yang, 2010;Li et al, 2010;Omisanya et al, 2012;H Kareem et al, 2014;Golbad et al, 2017;Garcia Mendoza, 2017;Du and Yang, 2010;Rahman et al, 2018;Mgbemere et al, 2019;Wang et al, 2019;Dahani et al, 2020;Sowunmi et al, 2022) sugar cane bagasse, rice husks, coal bottom ash (CBA), coal fly ash (CFA), natural zeolite (Ginting et al, 2019) , basalt rock (Hwang et al, 2018) , opal waste rock (Wu et al, 2018) , bauxite (Rahman et al, 2021) , from chemicals (Menad et al, 2016;Paprica et al, 2022) and waste sludge from water treatment plants (Wongwichien et al, 2014) . In this research, the silica extracted from BBS was used as raw material for making zeolite 4A.…”

Section: Introductionmentioning

confidence: 99%

Utilization of Bengkalis Beach Sand Silica as Raw Material in the Synthesis of Zeolite 4A

Azis,

Zahrina,

Fadli

et al. 2024

Sci. Technol. Indones

View full text Add to dashboard Cite

Zeolite 4A is a porous material that is widely used as an adsorbent, catalyst, membrane, ion exchanger, molecular sieve, etc. As a source of silica in the synthesis of zeolite 4A, silica from natural materials, biomass waste or chemicals has been used. In this research, silica extracted from Bengkalis beach sand (BBS) was used as raw material. The silica content in its oxide form, silicon oxide (SiO2) in BBS reaches 90%. The synthesis of zeolite 4A was carried out using a hydrothermal process, by varying the mole ratio of Si/Al from the reactant sodium silicate to sodium aluminate, namely 1.2:1; 1.4:1; 1.6:1 at reaction temperatures of 100, 110 and 120°C. Based on characterization using X-ray diffraction and an infrared spectrometer, the best conditions were obtained at a mole ratio reactant of 1.6, a reaction temperature of 100°C with a crystallinity percentage reaching 80.97%. Based on SEM-EDX analysis, the zeolite has an agglomerated morphology with a Si/Al ratio of around 1.09. The surface area, pore volume, and pore diameter of the synthesized zeolite were analyzed using a Brunauer-Emmet-Teller (BET) technique, respectively 81.844 m2/g, 0.039 cm3/g, and 3.07 nm.

show abstract

“…Some of these chemicals include sodium aluminate, aqueous tetramethylammonium hydroxide, aluminium isopropoxide, silica gel, etc. [2] The challenge with using commercial raw materials or precursors to produce zeolite is in the high cost involved [6,7]. In most countries, there exist some materials found in nature as industrial wastes that contain alumina and silica in proportions that can and have been used to produce zeolites.…”

Section: Introductionmentioning

confidence: 99%

Temperature and leaching effects of Zeolite-X derived from Kaolin

Mgbemere

Ovri

Sargent

2022

Preprint

View full text Add to dashboard Cite

Zeolites are microporous materials that find a lot of applications in today’s world due to their different properties. In this research, the effect of different calcination temperatures (700oC and 900oC) and acid leaching (7% and 15% dilution) on zeolite-X crystals has been investigated using the hydrothermal method. The results from the different sample characterization show that the SiO2/Al2O3 ratio is approximately 5.6 while the Infrared spectra indicate that Zeolite-X was produced with slight shifts in the wavenumbers. The diffraction patterns show that in addition to the formation of zeolite-X crystals, other phases were also obtained. The thermal analysis indicates that the zeolite is stable below 500oC. Thermogravimetric study shows that after about 200oC, only about 13% of the mass was lost. The differential thermal analyzer indicates that the samples followed the same trend until a temperature of 300oC where the samples calcined at 700oC had a positive heat loss while the samples calcined at 900oC had a negative heat loss. The BET analyses show that the zeolite from samples calcined at 700oC had lower adsorption-desorption isotherms compared to those at 900oC. The pore volume and sizes of the former were also lower than those of the latter. These results have shown that leached kaolin is effective in producing zeolite-X samples.

show abstract

Synthesis of zeolite-A using kaolin samples from Darazo, Bauchi state and Ajebo, Ogun state in Nigeria

Cited by 17 publications

References 34 publications

The Role of Zeolite (Microporous Crystalline Aluminosilicates) In Catalytic Pyrolysis of Waste High- and Low-Density Polyethylene Bags for Production of Fuel and Chemicals: A Review

The Role of Zeolite (Microporous Crystalline Aluminosilicates) In Catalytic Pyrolysis of Waste High- and Low-Density Polyethylene Bags for Production of Fuel and Chemicals: A Review

Utilization of Bengkalis Beach Sand Silica as Raw Material in the Synthesis of Zeolite 4A

Temperature and leaching effects of Zeolite-X derived from Kaolin

Contact Info

Product

Resources

About