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High inhibitive efficiency

High inhibitive efficiency relative to thermal destruction of n-alkanes is displayed by hydrides and amides of alkali metals [33-35]. [Pg.83]

C.J. Zou, Q.W. Tang, P.W. Zhao, E.D. Guan, X. Wu, H. Ye 2013 Further study on the inclnsion complex of 2-phosphonobutane-l,2,4-tricarboxylic acid with B-cyclodextrin A new insight of high inhibition efficiency for protecting steel corrosion. Journal of Petroleum Science and Engineer-mgl03, 29-35. [Pg.533]

Chlorine-enhancement may offer a partial solution. The addition of the chlorinated olefin TCE, PCE, or TCP to air/contaminant mixtures has recently been demonstrated to increase quantum yields substantially [1, 2, 6]. We recently have extended this achievement [3], to demonstrate TCE-driven high quantmn efficiency conversions at a reference feed concentration of 50 mg contaminant/m air not only for toluene but also for other aromatics such as ethylbenzene and m-xylene, as well as the volatile oxygenates 2-butanone, acetaldehyde, butsraldehyde, 1-butanol, methyl acrylate, methyl-ter-butyl-ether (MTBE), 1,4 dioxane, and an alkane, hexane. Not 1 prospective contaminants respond positively to TCE addition a conventional, mutual competitive inhibition was observed for acetone, methanol, methylene chloride, chloroform, and 1,1,1 trichloroethane, and the benzene rate was altogether unaffected. [Pg.436]

Contradictory opinions have been referred to in the literature particularly on the nature of the iron-tarmate and its interaction with the rusted steel due to the diversity of the material used in different studies. Studies have included the use of tannic acid [7-10], gallic acid [11], oak tannin [12, 13], pine tannin [14] and mimosa tannin [15]. In order to establish the correlation between the ferric-taimate formation and the low inhibition efficiency observed at high pH from the electrochemical studies, phase transformations of pre-rusted steels in the presence of tannins were evaluated. In this work the quantum chemical calculations are conducted to analyse the relationship between the molecular stracture and properties of ferric-taimate complex and its inhibitory mechanism. [Pg.198]

Trifluoromethyl /1-thioalkyls and /1-amino alcohols are often good reversible inhibitors of esterases and proteases, respectively. Depending on the enzymes (serine or aspartyl enzymes), fluorinated alcohols are often less efficient inhibitors than the corresponding ketones, which act as analogues of the transition state (vide infra). Nevertheless, fluoroalcohols inhibit hydrolytic enzymes with high inhibition constants (Figure 7.25)." ... [Pg.241]

Like other biocatalysts, RNA-cleaving ribozymes are highly specific for RNA and catalyze hydrolysis with high catalytic efficiency, undergo rapid turnover, and operate in a highly selective manner. In addition, inhibition of ribozyme catalysis has been observed for substrate analogs like enzymes and other biomacro-molecules, changes in ribozyme solvation and conformation have been observed when the inhibitor binds (Piccirilli et al. 1992). [Pg.249]


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