Boosting Propane Dehydrogenation over PtZn Encapsulated in an Epitaxial High-Crystallized Zeolite with a Low Surface Barrier

ACS Catalysis ◽  
2022 ◽  
pp. 1310-1314
Author(s):  
Bofeng Zhang ◽  
Guozhu Li ◽  
Sibao Liu ◽  
Yucai Qin ◽  
Lijuan Song ◽  
...  
Keyword(s):  
Propane Dehydrogenation ◽  
Surface Barrier

Data Acquisition and Handling Unit for a Quantitative Use of Electron Energy Loss Spectroscopy

1977 ◽  
Vol 35 ◽  
pp. 232-233 ◽  
Author(s):  
P. Trebbia ◽  
P. Ballongue ◽  
C. Colliex
Keyword(s):  
Electron Microscope ◽  
Energy Loss ◽  
Electron Energy ◽  
Electron Energy Loss Spectroscopy ◽  
Single Channel ◽  
Detection System ◽  
Surface Barrier ◽  
Solid State Detector ◽  
Electrostatic Mirror ◽  
Electron Energy Loss

An effective use of electron energy loss spectroscopy for chemical characterization of selected areas in the electron microscope can only be achieved with the development of quantitative measurements capabilities.The experimental assembly, which is sketched in Fig.l, has therefore been carried out. It comprises four main elements.The analytical transmission electron microscope is a conventional microscope fitted with a Castaing and Henry dispersive unit (magnetic prism and electrostatic mirror). Recent modifications include the improvement of the vacuum in the specimen chamber (below 10-6 torr) and the adaptation of a new electrostatic mirror.The detection system, similar to the one described by Hermann et al (1), is located in a separate chamber below the fluorescent screen which visualizes the energy loss spectrum. Variable apertures select the electrons, which have lost an energy AE within an energy window smaller than 1 eV, in front of a surface barrier solid state detector RTC BPY 52 100 S.Q. The saw tooth signal delivered by a charge sensitive preamplifier (decay time of 5.10-5 S) is amplified, shaped into a gaussian profile through an active filter and counted by a single channel analyser.

Branching Ratios and Lifetimes of 25Mg Levels below 5.2 MeV

1974 ◽  
Vol 52 (23) ◽  
pp. 2329-2342 ◽  
Author(s):  
R. W. Ollerhead ◽  
D. C. Kean ◽  
R. M. Gorman ◽  
M. B. Thomson
Keyword(s):  
Doppler Shift ◽  
Gamma Ray ◽  
Branching Ratios ◽  
Surface Barrier ◽  
Surface Barrier Detector ◽  
Rotational Model ◽  
Rotational Bands ◽  
Barrier Detector ◽  
Combined Data

All levels below 5.2 MeV in 25Mg have been studied using the reaction 25Mg(p, p′γ). In-elastically scattered protons were detected in an annular surface barrier detector located at 180°; coincidence gamma-ray spectra were obtained at Ge (Li) detector angles of 90°, 45°, and 135°. Level energies were determined from unshifted gamma-ray energies recorded in the 90° spectra. Lifetimes were obtained from the attenuated Doppler shift of gamma-ray energies recorded in spectra taken at forward and backward angles. Branching ratios were deduced from the combined data of all three angles. The identification of levels as members of rotational bands is discussed, and transition strengths deduced from the present measurements are compared with predictions of the simple rotational model.

Propane dehydrogenation: catalyst development, new chemistry, and emerging technologies

2021 ◽  
Author(s):  
Sai Chen ◽  
Xin Chang ◽  
Guodong Sun ◽  
Tingting Zhang ◽  
Yiyi Xu ◽  
...  
Keyword(s):  
Emerging Technologies ◽  
Propane Dehydrogenation ◽  
Catalyst Development ◽  
Recent Advances

This review describes recent advances in the propane dehydrogenation process in terms of emerging technologies, catalyst development and new chemistry.

Impact of Heteroatom Speciation on the Activity and Stability of Carbon‐Based Catalysts for Propane Dehydrogenation

ChemCatChem ◽  
2021 ◽  
Author(s):  
Simon Büchele ◽  
Guido Zichittella ◽  
Spyridon Kanatakis ◽  
Sharon Mitchell ◽  
Javier Pérez-Ramírez
Keyword(s):  
Propane Dehydrogenation ◽  
Carbon Based

Doubly Decorated Platinum–Gallium Intermetallics as Stable Catalysts for Propane Dehydrogenation

2021 ◽  
Author(s):  
Yuki Nakaya ◽  
Feilong Xing ◽  
Hyungwon Ham ◽  
Ken-ichi Shimizu ◽  
Shinya Furukawa
Keyword(s):  
Propane Dehydrogenation

scholarly journals Winter rye tolerance to low temperatures after seed treatment with surface barrier discharge

2021 ◽  
Vol 1787 (1) ◽  
pp. 012064
Author(s):  
S V Gundareva ◽  
A V Lazukin ◽  
N V Dorofeev ◽  
A G Romanov ◽  
S A Krivov
Keyword(s):  
Low Temperatures ◽  
Seed Treatment ◽  
Barrier Discharge ◽  
Surface Barrier ◽  
Winter Rye ◽  
Surface Barrier Discharge

Mesoporous-Silica-Stabilized Cobalt(II) Oxide Nanoclusters for Propane Dehydrogenation

2021 ◽  
Vol 4 (2) ◽  
pp. 1112-1125
Author(s):  
Zhoufeng Bian ◽  
Nikita Dewangan ◽  
Zhigang Wang ◽  
Subhasis Pati ◽  
Shibo Xi ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Propane Dehydrogenation
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