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model was very close to the value determined experimentally. We have now extended that work and report here an SET analysis of the catalytic hydrogenation of a range of substituted nitroarenes over Au/TiO 2 . Aromatic amines are extensively used
utilizing the principle of protein-dye binding . Anal. Biochem. 72 : 248 – 254 . Brennan , T. , Frenkel , C. 1977 . Involvement of hydrogen peroxide in the regulation of
-lyase (CSE), and 3-mercaptopyruvate sulfur transferase] ( 19 ). These three enzymes break down Hcy into hydrogen sulfide (H 2 S) ( 33 ). Together with nitric oxide ( • NO), carbon monoxide (CO), and methane, H 2 S belongs to a group of gaseous messengers
Abstract
Hydrogen isotope effect in the exchange reaction between HCl 2 – anions in tetramethyl- and tetraethylammonium hydrogen dichloride salts and gaseous HCl has been determined over the temperature range of 273–308 K. Unsymmetrical HCl 2 – anions in the tetramethylammonium salt generate deuterium separation factors between 0.87 and 0.93, while those for symmetrical HCl 2 – anion in the tetraethylammonium salt fall in the range of 0.64–0.76. The former are in good agreement with the theoretical values, while the latter are apparently higher than those predicted by theory. These discrepancies are caused mainly by the presence of more complicated species such as H2Cl 3 – ions.
. and Kogel, K.-H.(1999): Hypersensitive cell death and papilla formation in barley attacked by the powdery mildew fungus are associated with hydrogen peroxide but not with salicylic acid accumulation. Plant Physiol. 119, 1251
Enzymol. 1984 105 121 126 Afek, U., Orenstein, J. and Nuriel, E. (2000): Using HPP (hydrogen
References Al-Daoude , A. , Jawhar , M. , Arabi , M.I.E. 2013 . Hydrogen peroxide induction in barley- Cochliobolus sativus interaction . J. Plant Pathol
H.P. Larson 1989 Isotopic abundance ratios for hydrogen and oxygen in the martian atmosphere Bulletin of the American Astronomical Society 21
hydrocarbons [ 1 ]. Fischer–Tropsch synthesis (FTS) is a widely used method for the hydrogenation of CO to various liquid hydrocarbons. The analogous CO 2 hydrogenation reaction can also produce a variety of products ranging from methane and methanol to higher
Introduction Selective hydrogenation of 1,3-butadiene to butenes is an important reaction to upgrade C 4 hydrocarbons from steam cracking units and also to gain the excess of useful butenes in product streams [ 1 – 3
