High-performance Pd-N (N = Ga or Ag) bimetallic monolithic catalyst for the hydrogenation of 2-ethylanthraquinone: Experimental and DFT studies

2021 ◽  
Vol 509 ◽  
pp. 111604
Author(s):  
Yanyan Guo ◽  
Yichun Dong ◽  
Zhigang Lei ◽  
Zhixue Liu ◽  
Jiqin Zhu
Keyword(s):  
High Performance ◽  
Dft Studies ◽  
Monolithic Catalyst

scholarly journals A novel donor–π–acceptor halochromic 2,6-distyrylnaphthalene chromophore: synthesis, photophysical properties and DFT studies

RSC Advances ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 168-176
Author(s):  
Farhad Panahi ◽  
Ali Mahmoodi ◽  
Sajjad Ghodrati ◽  
Fazlolah Eshghi
Keyword(s):  
White Light ◽  
Potential Application ◽  
High Performance ◽  
Light Emission ◽  
Photophysical Properties ◽  
White Light Emission ◽  
High Potential ◽  
Dft Studies ◽  
Ph Responsive

A new pH-responsive fluorescence chromophore with white light emission at pH = 3 was synthesized which has high potential application in the preparation of high-performance lighting devices.

Design of high-performance electrochemistry sensors: Elucidation of detection mechanism by DFT studies

2020 ◽  
Vol 860 ◽  
pp. 113905
Author(s):  
Yunpeng Zhuang ◽  
Mutian Zhang ◽  
Xueying Li ◽  
Minggang Zhao ◽  
Caiyu Wang ◽  
...  
Keyword(s):  
High Performance ◽  
Dft Studies ◽  
Detection Mechanism

F-Doping effects on carbon-coated Li3V2(PO4)3 as a cathode for high performance lithium rechargeable batteries: combined experimental and DFT studies

2018 ◽  
Vol 20 (22) ◽  
pp. 15192-15202 ◽  
Author(s):  
Jinggao Wu ◽  
Maowen Xu ◽  
Chun Tang ◽  
Guannan Li ◽  
Hong He ◽  
...  
Keyword(s):  
Theoretical Calculation ◽  
High Performance ◽  
Rechargeable Batteries ◽  
Dft Studies ◽  
Lithium Rechargeable Batteries ◽  
Doping Effects ◽  
Carbon Coated

F-Doping effects on a Li3V2(PO4)3−xFx@C cathode for high performance Li rechargeable batteries are systematically investigated with a combined experimental and DFT theoretical calculation approach.

Catalytic nitridation preparation of high-performance Si3N4(w)-SiC composite using Fe2O3 nano-particle catalyst: Experimental and DFT studies

2017 ◽  
Vol 37 (15) ◽  
pp. 4467-4474 ◽  
Author(s):  
Jianghao Liu ◽  
Yajun Gu ◽  
Faliang Li ◽  
Lilin Lu ◽  
Haijun Zhang ◽  
...  
Keyword(s):  
High Performance ◽  
Nano Particle ◽  
Dft Studies

High-Performance PdNi Nanoalloy Catalyst in Situ Structured on Ni Foam for Catalytic Deoxygenation of Coalbed Methane: Experimental and DFT Studies

ACS Catalysis ◽  
2016 ◽  
Vol 6 (9) ◽  
pp. 6236-6245 ◽  
Author(s):  
Qiaofei Zhang ◽  
Xin-Ping Wu ◽  
Yakun Li ◽  
Ruijuan Chai ◽  
Guofeng Zhao ◽  
...  
Keyword(s):  
Coalbed Methane ◽  
High Performance ◽  
Dft Studies ◽  
Ni Foam ◽  
Catalytic Deoxygenation

A High Performance Energy Analyzer for Use in Electron Scanning Microscopy

1969 ◽  
Vol 27 ◽  
pp. 14-15
Author(s):  
A. V. Crewe ◽  
M. Isaacson ◽  
D. Johnson
Keyword(s):  
High Performance ◽  
Vertical Plane ◽  
Median Plane ◽  
Electron Gun ◽  
Uniform Field ◽  
Loss Mechanism ◽  
Electron Scanning Microscopy ◽  
Sector Type ◽  
Double Focusing ◽  
Electron Energy Loss

A double focusing magnetic spectrometer has been constructed for use with a field emission electron gun scanning microscope in order to study the electron energy loss mechanism in thin specimens. It is of the uniform field sector type with curved pole pieces. The shape of the pole pieces is determined by requiring that all particles be focused to a point at the image slit (point 1). The resultant shape gives perfect focusing in the median plane (Fig. 1) and first order focusing in the vertical plane (Fig. 2).

Vacuum System to Minimize the Specimen Contamination of High-Performance EM

1977 ◽  
Vol 35 ◽  
pp. 68-69
Author(s):  
N. Yoshimura ◽  
K. Shirota ◽  
T. Etoh
Keyword(s):  
Electron Microscope ◽  
High Speed ◽  
High Performance ◽  
High Vacuum ◽  
Vacuum System ◽  
Pump System ◽  
Pumping System ◽  
Diffusion Pump ◽  
Almost All ◽  
Cascade Type

One of the most important requirements for a high-performance EM, especially an analytical EM using a fine beam probe, is to prevent specimen contamination by providing a clean high vacuum in the vicinity of the specimen. However, in almost all commercial EMs, the pressure in the vicinity of the specimen under observation is usually more than ten times higher than the pressure measured at the punping line. The EM column inevitably requires the use of greased Viton O-rings for fine movement, and specimens and films need to be exchanged frequently and several attachments may also be exchanged. For these reasons, a high speed pumping system, as well as a clean vacuum system, is now required. A newly developed electron microscope, the JEM-100CX features clean high vacuum in the vicinity of the specimen, realized by the use of a CASCADE type diffusion pump system which has been essentially improved over its predeces- sorD employed on the JEM-100C.

Use of the Magnetostatic Analogue In Electromagnetic Lens Engineering

1970 ◽  
Vol 28 ◽  
pp. 360-361
Author(s):  
John W. Coleman
Keyword(s):  
Boundary Conditions ◽  
High Performance ◽  
Force Fields ◽  
Optical Design ◽  
Direct Conversion ◽  
Design Engineering ◽  
Design Data ◽  
Scalar Potentials ◽  
Geometric Elements ◽  
At Will

In the design engineering of high performance electromagnetic lenses, the direct conversion of electron optical design data into drawings for reliable hardware is oftentimes difficult, especially in terms of how to mount parts to each other, how to tolerance dimensions, and how to specify finishes. An answer to this is in the use of magnetostatic analytics, corresponding to boundary conditions for the optical design. With such models, the magnetostatic force on a test pole along the axis may be examined, and in this way one may obtain priority listings for holding dimensions, relieving stresses, etc..The development of magnetostatic models most easily proceeds from the derivation of scalar potentials of separate geometric elements. These potentials can then be conbined at will because of the superposition characteristic of conservative force fields.

Prospects for convergent beam electron diffraction with a 200kV cold field-emission transmission electron microscope

1991 ◽  
Vol 49 ◽  
pp. 466-467
Author(s):  
J W Steeds ◽  
R Vincent
Keyword(s):  
Field Emission ◽  
High Performance ◽  
Small Diameter ◽  
Convergent Beam Electron Diffraction ◽  
Zone Axis ◽  
Medium Voltage ◽  
Transmission Electron ◽  
Good Crystallinity ◽  
Special Modification ◽  
Convergent Beam

We review the analytical powers which will become more widely available as medium voltage (200-300kV) TEMs with facilities for CBED on a nanometre scale come onto the market. Of course, high performance cold field emission STEMs have now been in operation for about twenty years, but it is only in relatively few laboratories that special modification has permitted the performance of CBED experiments. Most notable amongst these pioneering projects is the work in Arizona by Cowley and Spence and, more recently, that in Cambridge by Rodenburg and McMullan.There are a large number of potential advantages of a high intensity, small diameter, focussed probe. We discuss first the advantages for probes larger than the projected unit cell of the crystal under investigation. In this situation we are able to perform CBED on local regions of good crystallinity. Zone axis patterns often contain information which is very sensitive to thickness changes as small as 5nm. In conventional CBED, with a lOnm source, it is very likely that the information will be degraded by thickness averaging within the illuminated area.

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