Impact of clay microstructure and mass absorption coefficient on the quantitative mineral identification by XRD analysis

Ouhadi, V R; Yong, Raymond N.

doi:10.1016/s0169-1317(03)00096-6

Cited by 74 publications

(18 citation statements)

References 5 publications

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“…3d). A intensidade difratada de qualquer reflexão hkl a partir de qualquer material cristalino pode estar relacionada à sua composição, matriz e as características texturais [30].…”

Section: Resultsunclassified

Síntese e caracterização de vermiculita mesoporosa obtida por modificação com sais complexos de alumínio e lantânio

Fernandes

Silva

2014

Cerâmica

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“…3d). A intensidade difratada de qualquer reflexão hkl a partir de qualquer material cristalino pode estar relacionada à sua composição, matriz e as características texturais [30].…”

Section: Resultsunclassified

Síntese e caracterização de vermiculita mesoporosa obtida por modificação com sais complexos de alumínio e lantânio

Fernandes

Silva

2014

Cerâmica

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“…Therefore flow with other characteristics, like turbulent flow, must rely on experimental and empirical relations. The borderlines between laminar, transitional and turbulent flow regimes are set by the Reynolds number of the flow [7]. For laminar flow, the viscous forces dominate, while for turbulent flow the inertial forces play the bigger role American Petroleum Institute.…”

Section: Flow Regimesmentioning

confidence: 99%

The Study of Effective of Added Aluminum Oxide Nano Particles to the Drilling Fluid: The Evaluation of Two Synthesis Methods

Hosseini¹,

Farahbod²,

Zargar³

2016

J Pet Environ Biotechnol

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In this paper, the tests are designed for investigation of the effects of the synthesized Al 2 O 3 nano particle prepared by ultrasonic and microwave on the drilling fluid flowing properties. Nano particles which are prepared with two different methods of ultrasonic and microwave are applied in drilling fluid. Experiments are held in heated tube section for simple drilling fluid and drilling fluid which contains 1% nano Aluminum oxide. Results illustrate on the numerical difference between values obtained from ultrasonic nano drilling fluid and those are obtained from microwave nano drilling fluid. Results show the addition of 1% nano aluminum oxide which is prepared by ultrasonic method into drilling fluid increases the amount of friction factor 6.84% and velocity about 4.4%, averagely. Also, the addition of 1% nano aluminum oxide which is prepared by microwave method into drilling fluid increases the amount of friction factor 5.8% and velocity about 3.7%, averagely.

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“…In an XRPD diagram, the intensity of X-rays reflected by a component is directly proportional to the quantity of that component, inversely proportional to the mass absorption coefficient of the mixture, and can be also dependent on any particular reflection line under consideration (Ouhadi and Yong, 2003). For the purpose of XRPD quantification, first a calibration curve was constructed by recording the XRPD patterns of artificial BaCO 3 -calcite and BaCO 3 -aragonite mixtures using the pure phases of the three minerals.…”

Section: Resultsmentioning

confidence: 99%

Retention of aqueous Ba2+ ions by calcite and aragonite over a wide range of concentrations: Characterization of the uptake capacity, and kinetics of sorption and precipitate formation

2007

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The uptake of aqueous Ba 2+ ions by abiogenic calcite and aragonite was studied over a wide range of concentration; 1.0 × 10 1 , 5.0 × 10 1 , 1.0 × 10 2 , 5.0 × 10 2 , 1.0 × 10 3 , 5.0 × 10 3 , and 1.0 × 10 4 mg/L. The uptake process was characterized using ICP-AES, XRPD, SEM/EDS, and FTIR techniques. Up to the initial concentration of 5.0 × 10 2 mg/L, the uptake of Ba 2+ ions was fast and obeyed Lagergren's kinetic model. The equilibrium data were adequately described using Freundlich isotherm model. The overgrowth of BaCO 3 (witherite) took place at higher concentrations, in a kinetically slow process and enhanced the uptake of Ba 2+ ions. Quantitative XRPD was used to evaluate the fractions of precipitated BaCO 3 on calcite and aragonite minerals and monitor their variation with time. At all the studied concentrations, aragonite showed higher removal capacity of Ba 2+ and faster uptake kinetics than did calcite. The precipitated crystals appeared to predominantly possess olivary-like morphology with an average particle size of 1-2 µm. EDS was used to reveal the elemental quantities of Ba and Ca after BaCO 3 formation on calcite and aragonite surfaces. FTIR spectroscopy was employed to analyze the vibrational modes in carbonate mixtures upon incorporation of Ba 2+ by sorption and precipitation mechanisms.

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Impact of clay microstructure and mass absorption coefficient on the quantitative mineral identification by XRD analysis

Cited by 74 publications

References 5 publications

Síntese e caracterização de vermiculita mesoporosa obtida por modificação com sais complexos de alumínio e lantânio

Síntese e caracterização de vermiculita mesoporosa obtida por modificação com sais complexos de alumínio e lantânio

The Study of Effective of Added Aluminum Oxide Nano Particles to the Drilling Fluid: The Evaluation of Two Synthesis Methods

Retention of aqueous Ba2+ ions by calcite and aragonite over a wide range of concentrations: Characterization of the uptake capacity, and kinetics of sorption and precipitate formation

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