scholarly journals Fluoride-assisted synthesis of bimodal microporous SSZ-13 zeolite

2016 ◽  
Vol 52 (15) ◽  
pp. 3227-3230 ◽  
Author(s):  
Xiaochun Zhu ◽  
Nikolay Kosinov ◽  
Jan P. Hofmann ◽  
Brahim Mezari ◽  
Qingyun Qian ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Mto Reaction ◽  
Improved Performance ◽  
Zeolite P

The presence of small amount of fluoride in alkaline hydrothermal synthesis of SSZ-13 zeolite yields bimodal microporous particles with substantially improved performance in the methanol-to-olefins (MTO) reaction.

One step hydrothermal synthesis of a rGO–TiO2 nanocomposite and its application on a Schottky diode: improvement in device performance and transport properties

RSC Advances ◽  
2015 ◽  
Vol 5 (123) ◽  
pp. 101582-101592 ◽  
Author(s):  
Mrinmay Das ◽  
Joydeep Datta ◽  
Arka Dey ◽  
Rajkumar Jana ◽  
Animesh Layek ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Transport Properties ◽  
Schottky Diode ◽  
Device Performance ◽  
One Step ◽  
Improved Performance

rGO–TiO2 nanocomposite based Schottky diode shows improved performance and better transport properties compared to TiO2.

scholarly journals Carbon nanotube-wrapped Fe2O3 anode with improved performance for lithium-ion batteries

2017 ◽  
Vol 8 ◽  
pp. 649-656 ◽  
Author(s):  
Guoliang Gao ◽  
Yan Jin ◽  
Qun Zeng ◽  
Deyu Wang ◽  
Cai Shen
Keyword(s):  
Hydrothermal Synthesis ◽  
Lithium Ion Batteries ◽  
Anode Material ◽  
Electronic Conductivity ◽  
Lithium Ion ◽  
Reversible Capacity ◽  
Practical Application ◽  
Lithium Storage ◽  
Improved Performance ◽  
A Current

Metall oxides have been proven to be potential candidates for the anode material of lithium-ion batteries (LIBs) because they offer high theoretical capacities, and are environmentally friendly and widely available. However, the low electronic conductivity and severe irreversible lithium storage have hindered a practical application. Herein, we employed ethanolamine as precursor to prepare Fe2O3/COOH-MWCNT composites through a simple hydrothermal synthesis. When these composites were used as electrode material in lithium-ion batteries, a reversible capacity of 711.2 mAh·g−1 at a current density of 500 mA·g−1 after 400 cycles was obtained. The result indicated that Fe2O3/COOH-MWCNT composite is a potential anode material for lithium-ion batteries.

scholarly journals Alkali‐dissolving hydrothermal synthesis of zeolite P from fly ash

2019 ◽  
Vol 14 (5) ◽  
pp. 572-576 ◽  
Author(s):  
Peng Wang ◽  
Qi Sun ◽  
Yujiao Zhang ◽  
Jun Cao
Keyword(s):  
Fly Ash ◽  
Hydrothermal Synthesis ◽  
Zeolite P

Insight into the impact of Al distribution on the catalytic performance of 1-octene aromatization over ZSM-5 zeolite

2019 ◽  
Vol 9 (24) ◽  
pp. 7034-7044 ◽  
Author(s):  
Liwei Zhang ◽  
Huaike Zhang ◽  
Zhiqiang Chen ◽  
Qiang Ning ◽  
Suyao Liu ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Catalytic Performance ◽  
Synthesis Conditions ◽  
Al Distribution ◽  
Zeolite P ◽  
The Impact ◽  
The Relationship ◽  
Insight Into ◽  
Long Chain

To correlate the relationship between the Al distribution and the catalytic performance of long-chain olefin aromatization, several ZSM-5 zeolites with different Al locations and proximities were prepared via adjusting the hydrothermal synthesis conditions.

scholarly journals Hydrothermal synthesis of magnetic zeolite P from fly ash and its properties

2020 ◽  
Vol 7 (1) ◽  
pp. 016104
Author(s):  
Peng Wang ◽  
Qi Sun ◽  
Yujiao Zhang ◽  
Jun Cao
Keyword(s):  
Fly Ash ◽  
Hydrothermal Synthesis ◽  
Magnetic Zeolite ◽  
Zeolite P

Toward The Simultaneous Correction of Spherical and Chromatic Aberration in Electron Optics by Means of an Electrostatic Electron Mirror

1990 ◽  
Vol 48 (1) ◽  
pp. 206-207
Author(s):  
Gertrude. F. Rempfer
Keyword(s):  
Chromatic Aberration ◽  
Transverse Magnetic ◽  
Objective Lens ◽  
Ion Imaging ◽  
Corrected Image ◽  
Electric And Magnetic Fields ◽  
Chromatic Aberrations ◽  
Improved Performance ◽  
Electron Microscopes ◽  
Image Planes

Optimum performance in electron and ion imaging instruments, such as electron microscopes and probe-forming instruments, in most cases depends on a compromise either between imaging errors due to spherical and chromatic aberrations and the diffraction error or between the imaging errors and the current in the image. These compromises result in the use of very small angular apertures. Reducing the spherical and chromatic aberration coefficients would permit the use of larger apertures with resulting improved performance, granted that other problems such as incorrect operation of the instrument or spurious disturbances do not interfere. One approach to correcting aberrations which has been investigated extensively is through the use of multipole electric and magnetic fields. Another approach involves the use of foil windows. However, a practical system for correcting spherical and chromatic aberration is not yet available.Our approach to correction of spherical and chromatic aberration makes use of an electrostatic electron mirror. Early studies of the properties of electron mirrors were done by Recknagel. More recently my colleagues and I have studied the properties of the hyperbolic electron mirror as a function of the ratio of accelerating voltage to mirror voltage. The spherical and chromatic aberration coefficients of the mirror are of opposite sign (overcorrected) from those of electron lenses (undercorrected). This important property invites one to find a way to incorporate a correcting mirror in an electron microscope. Unfortunately, the parts of the beam heading toward and away from the mirror must be separated. A transverse magnetic field can separate the beams, but in general the deflection aberrations degrade the image. The key to avoiding the detrimental effects of deflection aberrations is to have deflections take place at image planes. Our separating system is shown in Fig. 1. Deflections take place at the separating magnet and also at two additional magnetic deflectors. The uncorrected magnified image formed by the objective lens is focused in the first deflector, and relay lenses transfer the image to the separating magnet. The interface lens and the hyperbolic mirror acting in zoom fashion return the corrected image to the separating magnet, and the second set of relay lenses transfers the image to the final deflector, where the beam is deflected onto the projection axis.

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