The Importance of Consistent 1/d Scans in Determining Size and Strain by Powder Diffraction Profile Analysis

Zhang, Y.; Stewart, James; Hubbard, Camden R.; Morosin, B.

doi:10.1154/s0376030800019789

Cited by 7 publications

(6 citation statements)

References 7 publications

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“…The crystallization products matched the characteristic peaks of NaA nanozeolite that were reported by Treacy and Higgins [30], suggesting successful synthesis of NaA nanozeolite with good crystallinity. The main peaks can be observed at 2q = 7.2°(200), 10.3°(220), 12.5°(222), 24.0°(622), 30.0°(644) and 34.1°(640), which confirm the synthesis of pure phase NaA nanozeolite [31,32]. Alrich zeolites such as NaA are commonly synthesized under basic conditions by using alkali-metal hydroxides as the alkali source.…”

Section: Characterization Of Synthesized Naa Nanozeolitementioning

confidence: 61%

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Application of Synthesized NaA Nanozeolite as a Novel Supported Electrode for the Formaldehyde Electro‐catalytic Oxidation

Hassaninejad–Darzi

2018

Fuel Cells

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Nickel hydroxide doped NaA nanozeolite carbon paste electrode (Ni(OH)2‐NaA/CPE) was employed as simple and efficient sensor for electro‐catalytic oxidation and detection of formaldehyde (HCHO). For this goal, organic template free synthesis of NaA nanozeolite under room‐temperature was performed and characterized. Field emission scanning electronic microscopy (FESEM) technique exhibited the presence of spherical NaA nanozeolite morphology with particle size under 100 nm. The BET surface area and average pore diameter of synthesized NaA nanozeolite were obtained to be 3.622 × 102 m2 g−1 and 5.9 nm, respectively. Carbon paste electrode (CPE) was modified by NaA nanozeolite and then Ni2+ ions incorporated to this electrode to obtain Ni‐NaA/CPE. The values of electron transfer coefficient and mean value of catalytic rate constant for HCHO and redox sites of Ni(OH)2‐NaA/CPE were caculated to be 0.58 and 8.42 × 106 cm3 mol−1 s−1, respectively. The results indicate that Ni(OH)2‐NaA/CPE displays good electrocatalytic activity with respects to HCHO oxidation owing to its mesoporous structure and the large surface area of NaA nanozeolite. Moreover, amperometric studies exhibited that the fabricated electrode has a detection limits of 2.0 μM allowing the quantitative analysis of HCHO in the concentration range from 6.0 × 10−3 to 2.31 × 10−1mM with high sensitivity (1.6716 × 103 μA mM−1).

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Section: Characterization Of Synthesized Naa Nanozeolitementioning

confidence: 61%

“…The procedure of room-temperature synthesis of NaA nanozeolite have been described elsewhere [31,32]. Firstly, solution A was prepared by dissolving 9.49 g sodium metasilicate and 12.87 g NaOH in 104.52 mL deionized water.…”

Section: Synthesis Of Organic Template Free Naa Nanozeolitementioning

confidence: 99%

Application of Synthesized NaA Nanozeolite as a Novel Supported Electrode for the Formaldehyde Electro‐catalytic Oxidation

Hassaninejad–Darzi

2018

Fuel Cells

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“…Because of this it is favorable to apply grinding process. Ceramic alumina wheels [14] (surface and internal grinding) and SiC (cylindrical grinding) using granularity 46 and hardness J, K [9] are mainly used for grinding magnesium and its alloys. Grinding magnesium alloys as well as other materials containing chromium, nickel, aluminum or titanium [10] causes a formation of areas on the surface of the grinding wheels with adherent on machining material (gumming up of the wheel), which limit cutting ability of the tool.…”

Section: Introductionmentioning

confidence: 99%

Möglichkeit zur Lebensdauererhöhung von Schleifscheiben: Hier beim Schleifen von Magnesiumlegierungen

Dębkowski

Gołąbczak

Skowron

et al. 2019

Materialwissenschaft Werkst

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The article presents and discusses a new method of grinding of magnesium alloys using conventional ceramic grinding. In this method the conditioning (cleaning) of the cutting surface of grinding wheel during grinding operation is applied. It will be shown that this method significantly increases the durability of cutting properties of grinding wheels. Moreover, the geometrical structure of surface layer of grinded workpieces in 3D configuration is assessed as well as manufactured, diamond like carbon coating on the surface is presented. Schlüsselwörter: Magnesium alloys / grinding / ceramic grinding wheels / surface geometrical structure / conditioning / wear resistant coatings Im Artikel wurde ein neues Verfahren zum Schleifen von Magnesiumlegierungen mit Hilfe von keramischen Schleifscheiben dargestellt. Bei dieser Methode wurde ein neues Verfahren zur Konditionierung der aktiven Oberfläche der Schleifscheibe (Reinigung) angewendet. Es zeigte sich, dass dieses Verfahren die Schnittkapazität von Schleifscheiben um ein Vielfaches erhöht. Zusätzlich wurde die geometrische Struktur der Oberfläche nach dem Schleifen im 3D-System bewertet und die darauf erzeugte diamantähnliche Schicht dargestellt.

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“…This is in agreement with several earlier works. 14,15 Upon the addition of CTAB and heptane, the time for the formation of zeolite decreased. Therefore, it can be concluded that the addition of CTAB and heptane enhanced the nucleation process.…”

Section: Introductionmentioning

confidence: 99%

Effects of Cetyltrimethylammonium Bromide and Heptane on the Surface Properties and CO₂ Adsorption of Zeolite NaX

Krachuamram

Danvirutai

Youngme

et al. 2017

Journal of the Chinese Chemical Society

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Zeolite X was synthesized by the gelation method for use as a CO2 adsorbent. The zeolite was prepared from a sodium silicate solution and Al(OH)3 as silicon and aluminum source, respectively. The effects of cetyltrimethylammonium bromide (CTAB) and heptane addition on surface properties, morphology, and CO2 adsorption capacities were investigated. The CO2 adsorption capacity of the synthesized zeolite with the addition of CTAB and heptane increased as demonstrated by the higher CO2 uptake (3.00 mmol/g), which was due to the higher surface area and pore volume. Interaction between CTAB micelles and sodium cations with aluminosilicate anions led to an increase in the nucleation rate and smaller crystalline sizes. The addition of heptane resulted in higher positively charged CTAB micelles and improved the affinity between the micelles and aluminosilicate anions.

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The Importance of Consistent 1/d Scans in Determining Size and Strain by Powder Diffraction Profile Analysis

Cited by 7 publications

References 7 publications

Application of Synthesized NaA Nanozeolite as a Novel Supported Electrode for the Formaldehyde Electro‐catalytic Oxidation

Application of Synthesized NaA Nanozeolite as a Novel Supported Electrode for the Formaldehyde Electro‐catalytic Oxidation

Möglichkeit zur Lebensdauererhöhung von Schleifscheiben: Hier beim Schleifen von Magnesiumlegierungen

Effects of Cetyltrimethylammonium Bromide and Heptane on the Surface Properties and CO₂ Adsorption of Zeolite NaX

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The Importance of Consistent 1/d Scans in Determining Size and Strain by Powder Diffraction Profile Analysis

Cited by 7 publications

References 7 publications

Application of Synthesized NaA Nanozeolite as a Novel Supported Electrode for the Formaldehyde Electro‐catalytic Oxidation

Application of Synthesized NaA Nanozeolite as a Novel Supported Electrode for the Formaldehyde Electro‐catalytic Oxidation

Möglichkeit zur Lebensdauererhöhung von Schleifscheiben: Hier beim Schleifen von Magnesiumlegierungen

Effects of Cetyltrimethylammonium Bromide and Heptane on the Surface Properties and CO2 Adsorption of Zeolite NaX

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Effects of Cetyltrimethylammonium Bromide and Heptane on the Surface Properties and CO₂ Adsorption of Zeolite NaX