Simplified determination of sulfur compounds such as thiamine hydrochloride by the reductive decomposition with Raney nickel powder
نویسندگان
چکیده
منابع مشابه
Determination of trace sulfur in organic compounds by activated Raney nickel desulfurization method with non-dispersive gas detection system
A sensitive and precise method for the determination of trace amounts of total sulfur in organic mixtures is described. With this method bonded sulfur is reacted with activated Raney nickel and is reduced to nickel sulfide at 70 °C. Then, the residue is separated on a filter paper and pyrolysed by induction furnace technique for generation of SO2 which is then detected by a non-dispersive gas d...
متن کاملRaney-nickel Catalysts Produced by Mechanical Alloying
Raney catalysts were prepared by a combination of mechanical alloying and leaching as an alternative in the synthesis of Raney-Nickel catalysts. Binary Al-Ni and ternary Al-Ni-Fe alloys with nominal compositions Al65Ni35, Al75Ni25, Al65Ni30Fe5, Al75Ni20Fe5 (in atomic percent), were processed from pure elemental powders; they consisted mainly of the intermetallic B2 AlNi phase. Aluminum was sele...
متن کاملA simple approach to the synthesis of Cu1.8S dendrites with thiamine hydrochloride as a sulfur source and structure-directing agent
A facile, green and environmental-friendly method for preparing Cu1.8S dendrites was developed. Copper nitrate and thiamine hydrochloride were selected as the starting materials in the water phase under hydrothermal conditions. No addition of a surfactant or a complex reagent was required for the synthesis of the Cu1.8S dendrite structures. Thiamine hydrochloride was employed as a sulfur source...
متن کاملanaerobically, resulting from the mineralization of organic sulfur compounds as well as the reduction of oxidized inorganic sulfur compounds such as sulfate by sulfur-reducing bacteria [6]. Low concentrations of H2S and other gases
Air quality around open-air contaminant sources, including dairy corrals, dairy and swine manure storage lagoons is being measured for two years at ten different sites in seven U.S. states. Ammonia is being measured with tunable diode lasers (TDL) in an open path configuration. Methane (Innova Model 1412), and hydrogen sulfide (Thermo Environmental 450i) are measured in air drawn through a line...
متن کاملA Fundamental Study of Quantitative Desulfurization of Sulfur Containing Amino Acids by Raney Nickel and its Character
Raney nickel catalyst alone removes sulfur in reasonable yield from organic sulfur compounds, such as thiols, thioethers, disulfides, hemithioacetals, hemithioketals, diketals, thioamides, thiolesters, thiophenes, thioazoles, sulfoxides, sulfones, isothiocyanates, thioureas, and also organoselenium and tellurium compounds. This desulfurization reaction, therefore, has been used for the solution...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1983
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.32.t1