Studies on the activation of an apopyruvate dehydrogenation system obtained from extracts of lipoic acid-deficient Streptococcus jaecalis cells indicated that in its functional form lipoic acid is bound to protein in covalent linkage through its carboxyl group, i.e. as “lipoyl enzyme” (1). Further support for this proposal is furnished by the present finding that a partially purified enzyme, “l...

True alcoholic fermentation of carbohydrates, brought about by the action of undamaged cells, is not limited to the enzyme systems present in yeasts. Among the several other systems of microorganisms which are known to effect this conversion are the Fusaria. Investigation has shown that the enzymatic degradation of carbohydrates by Fusaria does not stop with the production of ethyl alcohol and ...

The calcium amidoborane hydrazinates, Ca(NH2BH3)2·nN2H4, were firstly synthesized by reacting different molar ratios of Ca(NH2BH3)2 and N2H4. In particular, Ca(NH2BH3)2 and N2H4 with a molar ratio of 1 : 2 crystallizes into the orthorhombic symmetry P212121 space group with the lattice parameters of a = 6.6239(4) Å, b = 13.7932(6) Å, c = 4.7909(2) Å. The dehydrogenations of calcium amidoborane ...

In this paper, the dehydrogenation reaction of NaBH4 was performed in presence Co-ion loaded hydrogel catalyst. The reactions took place within 27, 18 and 9 hours at 25, 35 45 °C, respectively. addition, relation between initial concentration released hydrogen investigated 45°C. A linear relationship borohydride produced H2 determined. Also, differential method used to determine rate constants ...

In the exploration of highly efficient direct ethanol fuel cells (DEFCs), how to promote the CO2 selectivity is a key issue which remains to be solved. Some advances have been made, for example, using bimetallic electrocatalysts, Rh has been found to be an efficient additive to platinum to obtain high CO2 selectivity experimentally. In this work, the mechanism of ethanol electrooxidation is inv...

Magnesium is considered one of the most promising materials for reversible hydrogen storage, because it has high storage capacity. However, the high thermodynamic stability of magnesium hydride is unfavorable for dehydrogenation processes. Understanding the bonding nature of Mg and H is essential for improving its dehydrogenation performance. Therefore, the charge density distribution in MgH2 w...

[Pd(NHC)(PR(3))] complexes were shown to be active catalysts in the dehydrogenation of ammonia borane and the subsequent hydrogenation of unsaturated compounds at very low catalyst loadings (0.05 mol% for some substrates).

Esterification of inorganic phosphate accompanies the oxidation of succinic acid by cell-free extracts of E. coli. Inorganic phosphate appears to be an essential requirement for the dehydrogenation of the C(4)-dicarboxylic acid.

Hydrotalcite-supported gold nanoparticles with sizes of less than 5 nm are highly efficient and reusable catalysts for the oxidant-free dehydrogenation of alcohols to carbonyl compounds and hydrogen.

The activity and selectivity of aluminaand magnesia-supported vanadia for propane oxidative dehydrogenation can be enhanced by can be enhanced by interactions of vanadia with molydena for the alumina-supported catalyst and by phosphorous doping for the magnesia-supported catalyst.