Total ammonia nitrogen (TAN) is a pollutant agent found in water and generated from the metabolisms of living organisms decomposition organic matter. This research aims to develop an efficient, low-cost, environmentally friendly TAN analysis method. The principle this method based on reaction injected donor stream with NaOH form alkaline gaseous ammonia. diffuses through hydrophobic membrane in...

ZnO supported on hypercrosslinked polystyrene was developed for liquid-phase methanol synthesis. The synthesized catalyst characterized using the low-temperature nitrogen physisorption, TEM, XPS, XAS, and CO DRIFT methods. analysis showed that has a high specific surface area (720 m2/g) is by micro-mesoporous structure typical of polymer used. active phase represented species with hexagonal wur...

A direct electrosynthesis of H2O2 from either O2 or H2O is an attractive strategy to replace the energy-intensive industrial anthraquinone process. Two-electron water oxidation reaction (2e-WOR) offers several advantages over oxygen reduction such as better mass transfer due absence gas-phase reactants. However, 2e-WOR a more challenging and less studied process with only handful metal oxides e...

Nitrogen-doped hierarchical mesoporous carbon is synthesized via molecular coassembly and polymerization of a rationally designed pyrrole derivative via softtemplating with a triblock copolymer in solution, followed by mild carbonization at 350 C and chemical activation at 500 C. The nitrogen-rich porous carbon possesses 5.8 wt% N and has a high surface area of 942 m g with hierarchically dis...

the possibility of selective leaching process was investigated during molybdenite flue dust leaching to recover its rhenium content. the results show that addition of alcohols to water makes the medium less favorable for molybdenum transfer into aqueous phase. on the other hand, addition of small amounts of alcohols (5-15%) makes a noticeable separation of rhenium over molybdenum, but by increa...

Abstract The reaction of methane with oxygen from La 0.8 Sr 0.2 FeO 3-δ (LSF) and several LSF-Fe 2 O 3 configurations was studied in chemical looping mode. Shell core (Fe ) (four catalysts called CS-3, CS-4, CS-5 CS-6, over a range coverage), LSF mixed uniformly Fe (UM) (front) followed by (PIS) were packed tubular reactor. conducted at 900 °C weight hourly space velocity (g methane/g catalyst/...

One of the most successful approaches in the synthesis of inhibitors of t he g lycosidases i s t he s ubstitution of t he e ndocyclic ox ygen i n monosaccharides by a nitrogen atom to get iminosugars. Given that many diseases h ave t heir o rigin i n t he malfunctioning of t hese e nzymes, t his glycomimetics bear s trong p otential a s dr ug c andidates. A t th eir p rotonated state, iminosuga...

in a novel dual bed reactor fischer-tropsch synthesis was studied by using two diffrent cobalt catalysts. an alkali-promoted cobalt catalyst was used in the first bed of a fixed-bed reactor followed by a rutenuim promoted cobalt catalyst in the second bed. the activity, product selectivity and accelerated deactivation of the system were assessed and compared with a conventional single bed react...