Experimental Characterizations and Swelling Studies of Natural and Activated Bentonites with Their Commercial Applications

Hayati-Ashtiani, Majid; Jazayeri, Seyed-Hamid; Ghannadi, M.; Nozad, A.

doi:10.1252/jcej.10we187

Cited by 18 publications

(6 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…B 1 and B 2 showed lower swell index (5 and 8 ml, respectively), due to the existence of calcium montmorillonite as shown in XRD analysis. It is known that the decreasing in the swelling index of the bentonites is a result of the increase in nonclay mineral of bentonites …”

Section: Resultsmentioning

confidence: 92%

See 1 more Smart Citation

Preparation of pillared nanoporous bentonite and its application as catalyst support in dry reforming reaction

Mofrad

Hayati-Ashtiani

Rezaei

2018

Asia-Pacific J Chem Eng

Self Cite

View full text Add to dashboard Cite

Bentonite clays containing montmorillonite are a nanostructure family of the smectite and have several industrial applications, such as the carrier for the preparation of the nickel-based catalysts for the syngas production via methane reforming with carbon dioxide. In this article, the physicochemical properties of the samples were determined by different analyses such as X-ray fluorescence, X-ray diffraction Brunauer-Emmett-Teller, thermal gravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscopy, H 2 temperature-programmed reduction, and swell index. Four natural bentonites were studied, and the sample with the surface area of 38.2 m 2 g −1 , pore diameter of 8.15 nm, and the highest content of montmorillonite was selected for pillaring process with aluminum. The results demonstrated that the pillaring process significantly improved the Brunauer-Emmett-Teller area. The catalytic results also confirmed that the 10% Ni catalyst supported on pillared clay demonstrated higher catalytic performance and resistance against carbon deposition compared with the catalyst supported on natural clay in methane reforming with CO 2 (dry reforming of methane reaction). KEYWORDSbentonite, dry reforming of methane, nanoporous montmorillonite, pillared bentonite

show abstract

Section: Resultsmentioning

confidence: 92%

“…A primary peak of cristobalite near 794 and 627 cm −1 is observed . The band at 875 cm −1 of B 4 sample due of Al–Fe–OH bending that is corresponding to the existence of Fe in the octahedral layer TOT . This result is in agreement with the XRF data, and the Fe amount of B 4 sample is higher than other samples.…”

Section: Resultsmentioning

confidence: 99%

Preparation of pillared nanoporous bentonite and its application as catalyst support in dry reforming reaction

Mofrad

Hayati-Ashtiani

Rezaei

2018

Asia-Pacific J Chem Eng

Self Cite

View full text Add to dashboard Cite

show abstract

“…To study the mobility of the exchangeable cations of interlayers is useful for the behavior of loosely surface bonded cations (Hayati-Ashtiani et al, 2011). The pH data could be used in determining the solubility of the exchangeable interlayer and loosely surrounded cations in bentonite.…”

Section: Discussionmentioning

confidence: 99%

Investigating Mineralogical and Physio-Chemical Properties of Bentonite for Water-Based Fluids

2021

Self Cite

View full text Add to dashboard Cite

Bentonite is a well-known type of clay and the mineralogical and physio-chemical characterization of its suspensions is essential to be investigated. In this study, the mineralogical and Physio-chemical characterization of the nano-porous structure of four industrial-grade bentonite samples namely, B1, B2, B3 and B4 were investigated to determine their mineralogical properties for a specific industrial application. Instrumental analyses of samples using XRD, XRF and BET were investigated along with laboratory tests including swelling and sediment indices, surface area and cation exchange capacity as well in order to select the appropriate sample. XRF along with slurry pH shows alkali metal ions. The results indicate B4 has calcite impurity, 50 cP viscosity reading at 600 r/min, 6 value for yield point/plastic viscosity ratio and 39.05 wt% residue of diameter greater than 75 μm. B3 is the most suitable sample for water-based fluid utilization compared to B1, B2 and B4, which satisfies the best standard requirements.

show abstract

“…Dai et al 228 used XRF as one of the techniques for undertaking a detailed assessment of the geochemistry and mineralogy of a high pyrite semi-anthracite coal from the Late Permian in the Songzao coalfield, southwestern China. Hayati-Ashtiani et al 229 undertook a range of tests, including XRF analysis, on natural and activated bentonites for both swelling and non-swelling categories, with a particular interest in their industrial applications as barriers, drilling mud, plethorapy, filtering agents and in the pharmaceutical industry. Gougazeh and Buhl 230 used a range of techniques, including XRF to characterise the kaolin deposits at Jabal-Al-Harad, southern Jordan, with a view to industrial exploitation.…”

Section: Industrial Mineralsmentioning

confidence: 99%

Atomic spectrometry update-X-ray fluorescence spectrometry

West

Ellis

Potts

et al. 2011

J. Anal. At. Spectrom.

View full text Add to dashboard Cite

Experimental Characterizations and Swelling Studies of Natural and Activated Bentonites with Their Commercial Applications

Cited by 18 publications

References 21 publications

Preparation of pillared nanoporous bentonite and its application as catalyst support in dry reforming reaction

Preparation of pillared nanoporous bentonite and its application as catalyst support in dry reforming reaction

Investigating Mineralogical and Physio-Chemical Properties of Bentonite for Water-Based Fluids

Atomic spectrometry update-X-ray fluorescence spectrometry

Contact Info

Product

Resources

About