Microwave‐assisted pyrolysis of organometallic gel prepared through ternary combination of surfactants for fabrication of nano‐porous gamma alumina: adsorptive properties, characterization

Microwave-assisted aqueous two-phase system based extraction of phenolics from pulses: Antioxidant properties, characterization and encapsulation

Industrial Crops and Products ◽

10.1016/j.indcrop.2021.114144 ◽

2021 ◽

Vol 173 ◽

pp. 114144

Author(s):

Elif Meltem İşçimen ◽

Mehmet Hayta

Keyword(s):

Antioxidant Properties ◽

Phase System ◽

Two Phase ◽

Aqueous Two Phase System ◽

Microwave Assisted ◽

Properties Characterization

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Microwave-Assisted Preparation and Physical Characterisation of Iron Oxyhydroxides Adsorbents for Arsenic Removal from Aqueous Solutions

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.634-638.249 ◽

2013 ◽

Vol 634-638 ◽

pp. 249-253 ◽

Cited By ~ 2

Author(s):

Meng Nan Lu ◽

Aleksandar N. Nikoloski ◽

Pritam Singh ◽

Dale Parsonage ◽

Radhanath Prasad Das ◽

...

Keyword(s):

Adsorption Process ◽

Arsenic Removal ◽

Degree Of Crystallinity ◽

Batch Adsorption ◽

Microwave Assisted ◽

Bet Analysis ◽

Novel Method ◽

The Degree Of Crystallinity ◽

Adsorptive Properties

A novel method for preparation of iron oxyhydroxide materials, involving aqueous precipitation followed by microwave assisted aging is investigated. The produced materials are characterized by XRD, SEM, EDX and TEM spectroscopy and BET analysis. The materials show physical characteristics dependent on preparation procedure. The adsorptive properties of the materials for arsenic are studied by batch adsorption techniques. It is found that the rate of arsenic upload depends strongly on the degree of crystallinity of the materials. The adsorption capacity is approximately 55 mg/g. The physical characterization of the arsenic loaded adsorbents show that the adsorption process modifies the morphology of the materials. Over 4% of arsenic atoms are incorporated into the particle matrix.

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Textural porosity, surface chemistry and adsorptive properties of durian shell derived activated carbon prepared by microwave assisted NaOH activation

Chemical Engineering Journal ◽

10.1016/j.cej.2012.01.079 ◽

2012 ◽

Vol 187 ◽

pp. 53-62 ◽

Cited By ~ 91

Author(s):

K.Y. Foo ◽

B.H. Hameed

Keyword(s):

Activated Carbon ◽

Surface Chemistry ◽

Microwave Assisted ◽

Adsorptive Properties

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Porous structure and adsorptive properties of pineapple peel based activated carbons prepared via microwave assisted KOH and K2CO3 activation

Microporous and Mesoporous Materials ◽

10.1016/j.micromeso.2011.08.005 ◽

2012 ◽

Vol 148 (1) ◽

pp. 191-195 ◽

Cited By ~ 93

Author(s):

K.Y. Foo ◽

B.H. Hameed

Keyword(s):

Porous Structure ◽

Activated Carbons ◽

Microwave Assisted ◽

Pineapple Peel ◽

Adsorptive Properties

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Visualization of the Platelet-Plasma Interface

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100079905 ◽

1977 ◽

Vol 35 ◽

pp. 494-495

Author(s):

D. C. Brindley ◽

M. McGill

Keyword(s):

Platelet Rich Plasma ◽

Coagulation Factors ◽

Platelet Membrane ◽

Rabbit Platelet ◽

Surface Coat ◽

Special Relationship ◽

Routine Method ◽

Embedding Technique ◽

Biochemical Analyses ◽

Adsorptive Properties

Morphological and cytochemical studies of platelets have reported a surface coat, or glycocalyx, external to the plasma membrane (1). Biochemical analyses have likewise confirmed the highly adsorptive properties of platelets as transporters of coagulation factors (2). However, visualization of the platelet membrane by conventional EM procedures does not reflect this special relationship between the platelet and its plasma environment. By the routine method of alcohol-propylene oxide dehydration for Epon embedding, the lipid bilayer nature of the platelet membrane appears similar to other blood cells (Fig. 1). A new rapid embedding technique using dimethoxypropane (DMP) as dehydrating agent (13) has permitted ultrastructural analyses of the surface features of the platelet-plasma interface.Aliquots of human or rabbit platelet-rich plasma (PRP) were added to equal volumes of 6% glutaraldehyde in Millonig's buffer at 37° for 45 minutes, rinsed in buffer and postfixed in 1% osmium in Millonig's buffer for 45 minutes.

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Site occupancy in gamma alumina

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100165732 ◽

1996 ◽

Vol 54 ◽

pp. 654-655

Author(s):

C. A. Bateman ◽

A.Z. Ringwelski ◽

R.W. Broach

Keyword(s):

Spinel Structure ◽

Site Occupancy ◽

Unit Cell ◽

Neutron Diffraction Data ◽

Gamma Alumina ◽

Tetrahedral Sites ◽

Powder Neutron Diffraction ◽

Cation Sites ◽

Powder Neutron Diffraction Data ◽

Insufficient Number

Gamma (γ) alumina is referred to as a defect spinel because it has a tetragonally distorted spinel structure (AB2O4) and an insufficient number of cations to fill all cation sites. In the spinel structure, the oxygen lattice is cubic close packed with A- and B-site cations in tetrahedral and octahedral coordination, respectively. The 2l⅓ Al atoms per unit cell of γ alumina can distribute themselves across 16 octahedral and 8 tetrahedral sites.The literature differs on where the 2⅔ cation vacancies per unit cell are located. Wilson and McConnell proposed that the vacancies in γ alumina, as first formed by calcining boehmite, are predominantly on the tetrahedral lattice but, with further heat treatment, move to occupy random positions on both octahedral and tetrahedral lattices. One study using NMR showed that the vacancies lay exclusively on the tetrahedral lattice, independent of the calcination temperature. A more-recent study using Rietveld refinement of powder neutron diffraction data suggested that both octahedral and tetrahedral lattices were partially occupied.

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