Catalytic dealkylation of alkylaromatic compounds. X. Influence of preparation process variables on properties of nickel-aluminium oxide catalysts

1965 ◽  
Vol 30 (3) ◽  
pp. 853-861 ◽  
Author(s):  
F. Jošt ◽  
V. Bažant
Keyword(s):  
Aluminium Oxide ◽  
Oxide Catalysts ◽  
Preparation Process ◽  
Process Variables

Structural study of VOx doped aluminium fluoride and aluminium oxide catalysts

2007 ◽  
Vol 180 (2) ◽  
pp. 749-758 ◽  
Author(s):  
Kerstin Scheurell ◽  
Gudrun Scholz ◽  
Erhard Kemnitz
Keyword(s):  
Structural Study ◽  
Aluminium Oxide ◽  
Oxide Catalysts ◽  
Aluminium Fluoride

scholarly journals Cobalt-aluminium Oxide Catalysts for Transformation of CO and H2 in Fischer – Tropsch Syntheses

2016 ◽  
Vol 16 (2) ◽  
pp. 17-22 ◽  
Author(s):  
I. I. Simentsova ◽  
A. A. Khassin ◽  
N. V. Shtertser ◽  
L. P. Davydova ◽  
T. P. Minyukova ◽  
...  
Keyword(s):  
Aluminium Oxide ◽  
Oxide Catalysts ◽  
Fischer Tropsch

Structural Study of VOx Doped Aluminium Fluoride and Aluminium Oxide Catalysts.

ChemInform ◽  
2007 ◽  
Vol 38 (51) ◽  
Author(s):  
Kerstin Scheurell ◽  
Gudrun Scholz ◽  
Erhard Kemnitz
Keyword(s):  
Structural Study ◽  
Aluminium Oxide ◽  
Oxide Catalysts ◽  
Aluminium Fluoride

The physical properties of chromium oxide—aluminium oxide catalysts - II. Electrical properties

1954 ◽  
Vol 224 (1158) ◽  
pp. 419-426 ◽  
Keyword(s):  
Electrical Conductivity ◽  
Electrical Properties ◽  
Physical Properties ◽  
Chromium Oxide ◽  
Electric Potential ◽  
Chromium Content ◽  
Aluminium Oxide ◽  
Oxide Catalysts ◽  
Thermo Electric ◽  
Alumina Catalysts

The electrical conductivity and thermo-electric potential of co-precipitated chromium oxide-alumina catalysts have been measured. The addition of alumina at first produces a rapid increase in the conductivity, but with higher concentrations of alumina this sub­sequently falls to values below that of chromium oxide alone. Catalysts reduced in hydrogen at 500°C are n -type semi-conductors if they contain more than about 35% of chromium oxide; those with lower chromium content, and all mixtures after heating in air, are p -type semi-conductors. Energies of activation for both types of conduction have been calculated.

An Improved Method for the Preparation and TEM Examination of Sharp Pointed Tips used in APFIM and STM

1990 ◽  
Vol 48 (2) ◽  
pp. 102-103
Author(s):  
E.A. Fischione ◽  
P.E. Fischione ◽  
J.J. Haugh ◽  
M.G. Burke
Keyword(s):  
Atom Probe ◽  
Preparation Process ◽  
Improved Method ◽  
Ion Milling ◽  
Polishing Process ◽  
Probe Field ◽  
Scanning Tunnelling ◽  
Stm Tips ◽  
Tunnelling Microscopy ◽  
Ion Microscopy

A common requirement for both Atom Probe Field-Ion Microscopy (APFIM) and Scanning Tunnelling Microscopy (STM) is a sharp pointed tip for use as either the specimen (APFIM) or the probe (STM). Traditionally, tips have been prepared by either chemical or electropolishing techniques. Recently, ion-milling has been successfully employed in the production of APFIM tips [1]. Conventional electropolishing techniques are applicable to a wide variety of metals, but generally require careful manual adjustments during the polishing process and may also be time-consuming. In order to reduce the time and effort involved in the preparation process, a compact, self-contained polishing unit has been developed. This system is based upon the conventional two-stage electropolishing technique in which the specimen/tip blank is first locally thinned or “necked”, and subsequently electropolished until separation occurs.[2,3] The result of this process is the production of two APFIM or STM tips. A mechanized polishing unit that provides these functions while automatically maintaining alignment has been designed and developed.

Recent advancement in the electrocatalytic synthesis of ammonia

Nanoscale ◽  
2020 ◽  
Vol 12 (15) ◽  
pp. 8065-8094 ◽  
Author(s):  
Xudong Wen ◽  
Jingqi Guan
Keyword(s):  
Metal Oxide ◽  
Oxide Catalysts ◽  
Single Atom ◽  
Metal Oxide Catalysts ◽  
Metal Free ◽  
Recent Advancement ◽  
Nanocomposite Catalysts

Different kinds of electrocatalysts used in NRR electrocatalysis (including single atom catalysts, metal oxide catalysts, nanocomposite catalysts, and metal free catalysts) are introduced.

Key process variables in group treatment for substance use

2013 ◽  
Author(s):  
P. Crits-Christoph ◽  
J. E. Johnson ◽  
M. B. Connolly Gibbons ◽  
R. Gallop
Keyword(s):  
Substance Use ◽  
Group Treatment ◽  
Process Variables
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