Mixing Aqueous Ferric Chloride andO-Phenylenediamine Solutions at Room Temperature:  A Fast, Economical Route to Ultralong Microfibrils of AssembliedO-Phenylenediamine Dimers

Langmuir ◽  
2007 ◽  
Vol 23 (21) ◽  
pp. 10441-10444 ◽  
Author(s):  
Xuping Sun ◽  
Matthias Hagner
Keyword(s):  
Ferric Chloride ◽  
Room Temperature

Selective etching of gold nanorods by ferric chloride at room temperature

CrystEngComm ◽  
2009 ◽  
Vol 11 (12) ◽  
pp. 2797 ◽  
Author(s):  
Renxian Zou ◽  
Xia Guo ◽  
Jian Yang ◽  
Dandan Li ◽  
Feng Peng ◽  
...  
Keyword(s):  
Ferric Chloride ◽  
Gold Nanorods ◽  
Room Temperature ◽  
Selective Etching

A STUDY OF SOME FACTORS INFLUENCING THE ACTIVITY OF ALUMINUM AND FERRIC CHLORIDES IN THE FRIEDEL AND CRAFTS REACTION

1929 ◽  
Vol 1 (5) ◽  
pp. 400-404 ◽  
Author(s):  
M. C. Boswell ◽  
R. R. McLaughlin
Keyword(s):  
Hydrogen Chloride ◽  
Ferric Chloride ◽  
Aluminum Chloride ◽  
Room Temperature ◽  
Pure Aluminum ◽  
Striking Result ◽  
Adsorbed Gas ◽  
Factors Influencing

In the preparation of aluminum chloride by the action of hydrogen chloride on the metal, hydrogen chloride is adsorbed and can be recovered to the extent of about 9 cc. per gram. After sublimation in nitrogen and re-sublimation in hydrogen chloride, however, the amount of adsorption is smaller and irregular. The adsorbed gas is not removed by a stream of nitrogen at room temperature. The activities in the Friedel and Crafts reaction of various preparations of aluminum chloride and of ferric chloride and of mixtures of these were determined; the order of decreasing activity was found to be as follows: a mixture of aluminum chloride and ferric chloride, aluminum chloride made by the action of hydrogen chloride on aluminum, aluminum chloride made by the action of chlorine on aluminum, a mixture of aluminum chloride and partially reduced ferric chloride, ferric chloride, and partially reduced ferric chloride. The most striking result of the measurements is that although ferric chloride alone has an activity of only about one-third that of aluminum chloride, an approximately equimolecular mixture of the two has an activity somewhat greater than that of pure aluminum chloride.

All-thiophene-based conjugated porous organic polymers

2016 ◽  
Vol 7 (31) ◽  
pp. 5031-5038 ◽  
Author(s):  
Chao-Jing Sun ◽  
Peng-Fei Wang ◽  
Hua Wang ◽  
Bao-Hang Han
Keyword(s):  
Ferric Chloride ◽  
Oxidative Coupling ◽  
Room Temperature ◽  
Organic Polymers ◽  
Porous Organic Polymers ◽  
Coupling Polymerization

Novel all-thiophene-based conjugated porous organic polymers (ThPOP-1 and ThPOP-2) were synthesized through ferric chloride-catalyzed oxidative coupling polymerization at room temperature.

scholarly journals Corrosion inhibition of copper in ferric chloride solutions with organic inhibitors

2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Omer Sisso ◽  
Snir Dor ◽  
David Eliyahu ◽  
Eyal Sabatani ◽  
Noam Eliaz
Keyword(s):  
Ferric Chloride ◽  
Room Temperature ◽  
Electrochemical Sensors ◽  
Electrochemical Techniques ◽  
Corrosion Process ◽  
Inhibition Mechanism ◽  
Copper Corrosion ◽  
Modified Surfaces ◽  
Different Temperatures ◽  
Organic Inhibitors

AbstractFerric chloride (FeCl3) has widespread use as an etchant in the PCB industry and for photochemical machining. Although the corrosion process of copper in FeCl3 is well known, the use of organic inhibitors of copper corrosion in FeCl3 solutions has not been reported. Such inhibition may allow microfabrication of special PCB designs and electrochemical sensors. Here, we investigate the inhibition of copper corrosion by FeCl3 (0.10 or 2.46 M) solutions with organic inhibitors. The most promising inhibitors are identified, investigated in 0.01 M FeCl3 solution using electrochemical techniques at different temperatures and exposure times, and the modified surfaces of copper are characterized by a variety of techniques in order to determine the inhibition mechanism. 5-methyl-1H-benzotriazole (MBTA, 65 mM) and 1H-benzotriazole (BTA, 65 mM) are found to be the most attractive inhibitors, with inhibition efficiencies between 96.5% and 99.5% at room temperature, depending on the exposure time and the measurement technique.

scholarly journals The Application of Ferric Chloride-Lignin Sulfonate as Shale Inhibitor in Water-Based Drilling Fluid

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4331 ◽  
Author(s):  
Rongjun Zhang ◽  
Long Gao ◽  
Wenguang Duan ◽  
Weimin Hu ◽  
Weichao Du ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
High Temperature ◽  
Ferric Chloride ◽  
Electrostatic Interaction ◽  
Room Temperature ◽  
Drilling Fluid ◽  
Swelling Degree ◽  
Water Based ◽  
Swelling Rate ◽  
Lignin Sulfonate

A series of ferric chloride-lignin sulfonate (FCLS) was prepared from ferric chloride and lignin sulfonate to be used as shale inhibitor. The swelling rate of clay with FCLS-2 (w/w = 0.3%) decreased to 41.9%. Compared with control, FCLS-2 displayed high inhibitive ability against the hydrating and swelling processes of clay. Thus, the swelling degree of samples with FCLS-2 was much lower than that of the control, as well as the mud ball was more stable in FCLS-2 solution. Essentially, these excellent performances in inhibitor were assigned to the hydrogen bonding, electrostatic interaction and anchoring between FCLS-2 and other components. In addition, FCLS-2 has good compatibility with other common drilling fluid additives, and it can reduce the viscosity of systems, regardless of the room temperature or high temperature.

Dependence of Intergranular Fracture on Boundary Topography and Cohesion

1973 ◽  
Vol 31 ◽  
pp. 150-151
Author(s):  
J. E. Doherty ◽  
A. F. Giamei ◽  
B. H. Kear ◽  
C. W. Steinke
Keyword(s):  
Grain Boundary ◽  
Room Temperature ◽  
Nickel Base Superalloy ◽  
Boundary Shear ◽  
Room Temperature Ductility ◽  
Solid Solution Matrix ◽  
Nickel Base ◽  
Solution Matrix ◽  
Different Levels ◽  
Base Superalloy

Recently we have been investigating a class of nickel-base superalloys which possess substantial room temperature ductility. This improvement in ductility is directly related to improvements in grain boundary strength due to increased boundary cohesion through control of detrimental impurities and improved boundary shear strength by controlled grain boundary micros true tures.For these investigations an experimental nickel-base superalloy was doped with different levels of sulphur impurity. The micros tructure after a heat treatment of 1360°C for 2 hr, 1200°C for 16 hr consists of coherent precipitates of γ’ Ni3(Al,X) in a nickel solid solution matrix.

Hepatocyte Alterations in Guinea Pigs FED Polychlorinated Biphenyls (PCBs), Dibenzodioxins (PCDD), AND DIBENZOFURANS (PCDF)

1982 ◽  
Vol 40 ◽  
pp. 56-57
Author(s):  
J. N. Turner ◽  
D. N. Collins
Keyword(s):  
Guinea Pigs ◽  
Room Temperature ◽  
Dose Group ◽  
Methyl Cellulose ◽  
Uranyl Acetate ◽  
Target Organ ◽  
Office Building ◽  
Lead Citrate ◽  
Control Groups ◽  
Cooling Fluid

A fire involving an electric service transformer and its cooling fluid, a mixture of PCBs and chlorinated benzenes, contaminated an office building with a fine soot. Chemical analysis showed PCDDs and PCDFs including the highly toxic tetra isomers. Guinea pigs were chosen as an experimental animal to test the soot's toxicity because of their sensitivity to these compounds, and the liver was examined because it is a target organ. The soot was suspended in 0.75% methyl cellulose and administered in a single dose by gavage at levels of 1,10,100, and 500mgm soot/kgm body weight. Each dose group was composed of 6 males and 6 females. Control groups included 12 (6 male, 6 female) animals fed activated carbon in methyl cellulose, 6 males fed methyl cellulose, and 16 males and 10 females untreated. The guinea pigs were sacrificed at 42 days by suffocation in CO2. Liver samples were immediately immersed and minced in 2% gluteraldehyde in cacadylate buffer at pH 7.4 and 4°C. After overnight fixation, samples were postfixed in 1% OsO4 in cacodylate for 1 hr at room temperature, embedded in epon, sectioned and stained with uranyl acetate and lead citrate.

Domain Formation in Synthetic Quartz

1971 ◽  
Vol 29 ◽  
pp. 156-157
Author(s):  
Joseph J. Comer
Keyword(s):  
Electron Beam ◽  
Room Temperature ◽  
Domain Formation ◽  
Synthetic Quartz ◽  
Transmission Electron ◽  
Black Spots ◽  
Diffraction Mode ◽  
Domain Boundaries ◽  
Kikuchi Lines ◽  
Straight Lines

Domains visible by transmission electron microscopy, believed to be Dauphiné inversion twins, were found in some specimens of synthetic quartz heated to 680°C and cooled to room temperature. With the electron beam close to parallel to the [0001] direction the domain boundaries appeared as straight lines normal to <100> and <410> or <510> directions. In the selected area diffraction mode, a shift of the Kikuchi lines was observed when the electron beam was made to traverse the specimen across a boundary. This shift indicates a change in orientation which accounts for the visibility of the domain by diffraction contrast when the specimen is tilted. Upon exposure to a 100 KV electron beam with a flux of 5x 1018 electrons/cm2sec the boundaries are rapidly decorated by radiation damage centers appearing as black spots. Similar crystallographio boundaries were sometimes found in unannealed (0001) quartz damaged by electrons.

A Liquid Nitrogen Cooled Stage for STEM

1974 ◽  
Vol 32 ◽  
pp. 444-445
Author(s):  
Louis T. Germinario
Keyword(s):  
Electron Microscope ◽  
High Resolution ◽  
Liquid Nitrogen ◽  
Room Temperature ◽  
Objective Lens ◽  
Thermal Drift ◽  
Specimen Holder ◽  
Resolution Capability ◽  
Focal Position

A liquid nitrogen stage has been developed for the JEOL JEM-100B electron microscope equipped with a scanning attachment. The design is a modification of the standard JEM-100B SEM specimen holder with specimen cooling to any temperatures In the range ~ 55°K to room temperature. Since the specimen plane is maintained at the ‘high resolution’ focal position of the objective lens and ‘bumping’ and thermal drift la minimized by supercooling the liquid nitrogen, the high resolution capability of the microscope is maintained (Fig.4).

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