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. 81927-55-1, Name is Benzyl 2,2,2-trichloroacetimidate, molecular formula is C9H8Cl3NO. In an article, author is Yang, Lei,once mentioned of 81927-55-1, Computed Properties of C9H8Cl3NO.
Using layered double hydroxides and anion exchange resin to improve the mechanical properties and chloride binding capacity of cement mortars
Chloride-induced corrosion results in the deterioration of concrete structures. To resolve this issue, two types of synthetic layered double hydroxides (LDHs) 2D nanoflakes based on CaFe-NO3 and CaFeAl-NO3 and a strongly basic anion exchange resin (SBAER) were developed for removing chloride ions from simulated sea sand (SSS) mortars. We investigated the combined effect of SSS mortars blended with chloride adsorbents using the response surface methodology (RSM). A Box-Behnken Design (BBD) was used to discuss the independent variables (CaFe-NO3 LDHs, CaFeAl-NO3 LDHs, and SBAER) and evaluate the response of compressive strength and free chloride content concerning admixture content. Experimental results showed that the free chloride content of the samples decreased upon the addition of LDHs and SBAER due to a synergistic effect, which resulted in the formation of LDHs-Cl, [N+(CH3)(3)Cl], Friedel’s salt (FS), and Kuzel’s salt (KS). The optimal range of the admixture content was determined to be 0.3-0.6 wt% CaFe-NO3 LDHs, 0.2-0.5 wt% CaFeAl-NO3 LDHs, and 0.2-0.5 wt% SBAER. In conclusion, LDHs and SBAER exhibited excellent chloride binding capacity, which makes them promising candidates for use as high-efficiency and stable chloride composite adsorbents in marine concrete. (C) 2020 Elsevier Ltd. All rights reserved.
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