A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 941-37-7, Name is 1-Bromo-3,5-dimethyladamantane, molecular formula is C12H19Br. In an article, author is Bidi, Hanane,once mentioned of 941-37-7, Recommanded Product: 1-Bromo-3,5-dimethyladamantane.
Corrosion resistance of alpha- and (alpha plus beta)-Brasses in a descaling solution by a mixture of imidazole and hexadecyltrimethylammonium bromide
Scaling is a major problem in many industrial processes. Oxide scales often formed on the surface of metals and alloys, and it is of high interest to descale it using effective and environment-friendly methods. Herein, the corrosion inhibition effect of the imidazole (IMI) mixed with the Hexadecyltrimethylammonium bromide (CTAB) for alpha- and (alpha + beta)-brasses in a descaling solution (sulfamic (2%) and perchloric (4%) mixture) is studied at 295 K using electrochemical (potentiodynamic polarization measurements (PDP) and electrochemical impedance measurements (EIS)), inductively coupled plasma spectrometry (ICPS) and scanning electron microscopy/energy-dispersive X-ray spectroscopy (SEM/EDX) techniques. Results show that the imidazole/CTAB mixture acts via adsorption at the alloy/solution interface. Potentiodynamic polarization results reveal that the imidazole/CTAB mixture behaves as a mixed type corrosion inhibitor. At the same time, those from EIS tests show that alpha-brass has a higher corrosion resistance compared to that of (alpha + beta)-brass. Under optimum conditions, an inhibition efficiency of 95 % is achieved for both brasses. The morphological characterization by SEM/EDX and ICPS analysis confirms the efficacy of the mixture in protecting alpha- and (alpha + beta)-brasses against corrosion by decreasing the dezincification factor. This study provides a new approach to control the brass loss and achieve desired surface quality using a less corrosive descaling solution and imidazole/CTAB as anti-corrosive additive.
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