Cluster Size Dependent Interaction of Free Manganese Oxide Clusters with Acetic Acid and Methyl Acetate

2021 ◽  
Author(s):  
Sandra M. Lang ◽  
Thorsten M. Bernhardt ◽  
Joost M. Bakker ◽  
Robert N. Barnett ◽  
Uzi Landman
Keyword(s):  
Acetic Acid ◽  
Manganese Oxide ◽  
Cluster Size ◽  
Methyl Acetate ◽  
Size Dependent ◽  
Dependent Interaction

scholarly journals Cluster-Size-Dependent Interaction between Ethylene and CuCl2 Clusters Supported via γ-Alumina

2020 ◽  
Vol 124 (19) ◽  
pp. 10430-10440 ◽  
Author(s):  
Yanying Qi ◽  
Endre Fenes ◽  
Hongfei Ma ◽  
Yalan Wang ◽  
Kumar Ranjan Rout ◽  
...  
Keyword(s):  
Cluster Size ◽  
Size Dependent ◽  
Dependent Interaction

Production and STEM examination of controlled-size silver clusters

1983 ◽  
Vol 41 ◽  
pp. 338-339
Author(s):  
M. A. Listvan ◽  
R. P. Andres
Keyword(s):  
Cluster Size ◽  
Metal Clusters ◽  
Experimental Parameter ◽  
Carbon Films ◽  
Metal Species ◽  
Silver Clusters ◽  
Free Jet ◽  
Size Dependent ◽  
Cluster Properties ◽  
Controllable Size

Knowledge of the function and structure of small metal clusters is one goal of research in catalysis. One important experimental parameter is cluster size. Ideally, one would like to produce metal clusters of regulated size in order to characterize size-dependent cluster properties.A source has been developed which is capable of producing microscopic metal clusters of controllable size (in the range 5-500 atoms) This source, the Multiple Expansion Cluster Source, with a Free Jet Deceleration Filter (MECS/FJDF) operates as follows. The bulk metal is heated in an oven to give controlled concentrations of monomer and dimer which were expanded sonically. These metal species were quenched and condensed in He and filtered to produce areosol particles of a controlled size as verified by mass spectrometer measurements. The clusters were caught on pre-mounted, clean carbon films. The grids were then transferred in air for microscopic examination. MECS/FJDF was used to produce two different sizes of silver clusters for this study: nominally Ag6 and Ag50.

scholarly journals Improvement of acid solutions for stimulation of compacted high-temperature carbonate collectors

2021 ◽  
Vol 6 (3(62)) ◽  
pp. 11-14
Author(s):  
Oleh Zimin
Keyword(s):  
Surface Tension ◽  
Acetic Acid ◽  
High Temperature ◽  
Reaction Rate ◽  
Methyl Acetate ◽  
Surface Tension Coefficient ◽  
Gradual Transition ◽  
Acid Solutions ◽  
Hydrocarbon Production ◽  
Low Viscosity

The object of research in this work is the intensification of hydrocarbon production. The most problematic task of the study is the efficiency of intensification of compacted high-temperature carbonate reservoirs. Despite the gradual transition to renewable energy sources, natural gas and oil will play a dominant role in the world's energy balance in the next 20–30 years. Carbonate rocks have significant mining potential, but low filtration properties require intensification to improve reservoir permeability. High temperatures and pressures at great depths require the improvement of existing hydrocarbon production technologies. The most popular method for treating reservoirs containing carbonates is acid treatments in different variations, but for effective treatment it is necessary to achieve deep penetration of the solution into the formation. The study solves the problem of selection of effective carrier liquids for the preparation of acid solutions for the treatment of compacted high-temperature reservoirs with high carbonate content. To ensure quality treatment, acid solutions must have low viscosity and surface tension coefficient, low reaction rate, their chemical properties must ensure the absence of insoluble precipitates in the process of reactions with fluids and rocks, as well as be environmentally friendly. To select the most optimal carrier liquid, experiments were conducted to determine which candidate liquids provide the minimum reaction rate of acidic solutions with carbonates. Based on the analysis of industrial application data and literature sources, water, nephras, methanol, ethyl acetate, and methyl acetate were selected for further research. Widely studied acetic acid was chosen as the basic acid. Studies have shown that methyl acetate has a number of advantages, namely low reaction rate, low viscosity and surface tension coefficient. As well as the possibility of hydrolysis in the formation with the release of acetic acid, which significantly prolongs the reaction time of the solution with the rock and the depth of penetration of the active solution into the formation.

DFT Study of Cluster Size-Dependent Structures and Properties of (HClGaN3)n (n = 1–6) Clusters

2021 ◽  
Vol 95 (S1) ◽  
pp. S120-S127
Author(s):  
Dengxue Ma ◽  
Yaoyao Wei ◽  
Guokui Liu ◽  
Qiying Xia
Keyword(s):  
Cluster Size ◽  
Dft Study ◽  
Size Dependent ◽  
Structures And Properties

Size-dependent interaction of a 3-arm star poly(ethylene glycol) with two biological nanopores

2018 ◽  
Vol 41 (6) ◽  
Author(s):  
Monasadat Talarimoghari ◽  
Gerhard Baaken ◽  
Ralf Hanselmann ◽  
Jan C. Behrends
Keyword(s):  
Ethylene Glycol ◽  
Poly Ethylene Glycol ◽  
Size Dependent ◽  
Poly Ethylene ◽  
Dependent Interaction

ChemInform Abstract: Preparation of Acetic Acid Anhydride by Carbonylation of Methyl Acetate.

1986 ◽  
Vol 17 (15) ◽  
Author(s):  
V. A. MAMYAN ◽  
S. D. SOMINSKII ◽  
S. D. PIROZHKOV ◽  
V. L. BARSEGYAN ◽  
V. D. VARDANYAN ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Methyl Acetate ◽  
Acid Anhydride

scholarly journals Size-Dependent Interaction of Amyloid β Oligomers with Brain Total Lipid Extract Bilayer—Fibrillation Versus Membrane Destruction

Langmuir ◽  
2019 ◽  
Vol 35 (36) ◽  
pp. 11940-11949 ◽  
Author(s):  
Dusan Mrdenovic ◽  
Marta Majewska ◽  
Izabela S. Pieta ◽  
Piotr Bernatowicz ◽  
Robert Nowakowski ◽  
...  
Keyword(s):  
Total Lipid ◽  
Amyloid Β ◽  
Lipid Extract ◽  
Total Lipid Extract ◽  
Size Dependent ◽  
Dependent Interaction
Sign in / Sign up

Export Citation Format

Share Document