Measurement of Surface Area of Modified Clays by Ethylene Glycol Monoethyl Ether Method

Ugochukwu, Uzochukwu C.

doi:10.14233/ajchem.2017.20538

Cited by 9 publications

(2 citation statements)

References 25 publications

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“…The specific surface area of the HDTMACmodified clay was found to be 129. . This value agrees with that made by Uzochukwu [21] after measuring the surface area of modified clays using Ethylene Glycol Monoethyl Ether method. Finer particles of a given sample pose values that are higher than coarser particles.…”

Section: Specific Surface Areasupporting

confidence: 91%

Physicochemical Properties of Organophilic Clay Developed Using Hexadecyltrimethylammonium Chloride (HDTMAC) Modifier

Inya

Uzoamaka

Obi

2021

IRJPAC

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Aims: Ogwuta clay from Unwana in the South Eastern part of Nigeria was modified by ion exchange reaction using hexadecyltrimethylammonium chloride (HDTMAC). Study Design: This study was analyzed experimentally and instrumentally. Place and Duration of Study: This study was carried out at the Department of Pure and Industrial Chemistry, Faculty of Science, University of Port Harcourt, Nigeria. The sample collection, literature search, experiment, results and analysis lasted for one and half years. Methodology: Physicochemical and thermal properties of the clay were determined after modification using classical and spectroscopic techniques. A combination of the wet and dry method (X-ray Fluorescence) was used to determine the metal oxide composition. Other techniques included; Fourier Transform Infrared (FTIR), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), and Thermogravimetry (TG). The Cation Exchange Capacity (CEC) was determined using the methylene blue method with a value of 16.4 meq/100g after modification. Results: The product was slightly acidic with pH 4.3. Silica (SiO2), alumina (Al2O3), Na+, and K+ were found to be 47.58 %, 18.99%, 2.27, and 0.23% respectively. The clay was limited in mineral impurities with 0.0% T4+, 0.41% Mg2+, and 0.11% Ca2+ but high in carbonaceous matter with loss on ignition (LOI) of 13.17%. A C-H asymmetric stretching was visible around the 2931.9 cm-1 region as revealed by the Fourier Transform Infra-Red analysis. The X-Ray Diffraction analysis of the modified clay showed a basal spacing of 8.121 Å. Also, the X-Ray Diffractogram revealed kaolinite as the major clay mineral with the presence of quartz and polygorskite. Conclusion: This study posits that the modified clay can be potentially suitable for the adsorptive removal of organic contaminants in aqueous and real life media.

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Section: Specific Surface Areasupporting

confidence: 91%

Physicochemical Properties of Organophilic Clay Developed Using Hexadecyltrimethylammonium Chloride (HDTMAC) Modifier

Inya

Uzoamaka

Obi

2021

IRJPAC

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“…Diversos métodos e técnicas têm sido desenvolvidos para determinar a área superficial específica de materiais. Para argilominerais, os métodos mais empregados estão baseados na formação de camadas monomoleculares sobre a superfície do material seja por adsorção química (quimissorção) de moléculas polares como glicerol, etileno glicol e etileno glicol mono etil éter (EGME), ou por adsorção física (fisissorção) de moléculas gasosas apolares como nitrogênio, argônio oxigênio [7][8][9].…”

Section: Introductionunclassified

Determinação da área superficial específica e da porosidade de duas amostras de argilas provenientes da bacia de Taubaté- São Paulo / Determination of specific surface area and porosity of two clays originated from Taubaté- Basin – São Paulo

Acevedo

Rocha

Bertolino

2021

BASR

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A área superficial específica é uma das propriedades que exercem efeito significativo nas características adsortivas de argilas e consequentemente sobre seu potencial de aplicação industrial. Neste trabalho, a área superficial específica e a porosidade de duas amostras de argilas provenientes da Bacia de Taubaté, São Paulo, denominadas AA e SF, foram determinadas utilizando-se o equipamento Area Surface and Porosity Analyser (ASAP 2020) da Micromeritics, a partir das isotermas de adsorção e dessorção de N2 obtidas. A área superficial específica foi calculada através da aplicação da equação derivada por Brunauer, Emmett e Teller (BET). O diâmetro médio e o volume de poros nas etapas de adsorção e dessorção foram calculados com base no método de Barrett, Joyner e Halenda (BJH). A área e o volume de microporos foram calculados pelo método t-plot. Nenhuma diferença significativa entre as argilas foi observada a partir dos dados coletados. Ambas as amostras apresentaram isotermas do tipo IV(a) com laço de histerese tipo H3, características de materiais mesoporosos com poros tipo fenda de tamanho não uniforme. Os valores de área superficial obtidos para a amostra AA, 128,5 m 2 /g e para a amostra SF, 112,6 m 2 /g, são comparáveis com os valores observados em bentonitas adsorventes. A análise da distribuição de tamanho de poros revela uma amplia distribuição de tamanhos de poros com predominancia de mesoporos na faixa de 150-350 Å. Os Brazilian Applied Science Review

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Influence of Clay Mineralogy on Soil Organic Carbon Stabilization under Tropical Climate, India

Das

Purakayastha

Ahmed

et al. 2022

J Soil Sci Plant Nutr

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Measurement of Surface Area of Modified Clays by Ethylene Glycol Monoethyl Ether Method

Cited by 9 publications

References 25 publications

Physicochemical Properties of Organophilic Clay Developed Using Hexadecyltrimethylammonium Chloride (HDTMAC) Modifier

Physicochemical Properties of Organophilic Clay Developed Using Hexadecyltrimethylammonium Chloride (HDTMAC) Modifier

Determinação da área superficial específica e da porosidade de duas amostras de argilas provenientes da bacia de Taubaté- São Paulo / Determination of specific surface area and porosity of two clays originated from Taubaté- Basin – São Paulo

Influence of Clay Mineralogy on Soil Organic Carbon Stabilization under Tropical Climate, India

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