Ammonia has been intensively studied as a clean, sustainable fuel source and an efficient energy storage medium due to its effectiveness hydrogen carrier molecule. However, the currently used Haber–Bosch process requires large fossil input, high temperatures pressures, well significant capital investment. These constraints prevent decentralized small-scale ammonia production at level of small f...

Zeolite 13X and 5A supported Ni catalysts were synthesized for CO2 methanation using the evaporation impregnation method. The influence of different precursors (nitrate, citrate, acetate) as well calcination temperatures on catalyst properties performance investigated. XRD, SEM-EDX, TEM, STEM-EDX, N2 physisorption, H2-TPR, TPD-NH3 TG/DTA used detailed characterization catalysts. parent structur...

Most of the solids used in adsorption processes are heterogeneous and most isotherm models are not derived to use information about the solid structure and energy heterogeneity. A possible alternative is to use molecular simulation techniques, which turn the thermodynamic model more microscopic. Then, starting from information on the solid structure, it is possible to develop appropriate solid ...

Metal organic frameworks (MOFs) built from a single small ligand typically have high stability, are rigid, and have syntheses that are often simple and easily scalable. However, they are normally ultra-microporous and do not have large surface areas amenable to gas separation applications. We report an ultra-microporous (3.5 and 4.8 Å pores) Ni-(4-pyridylcarboxylate)2 with a cubic framework tha...

Aluminophosphate monoliths with high CO 2-over-N 2 selectivity and CO 2 capture capacity. Access to the published version may require subscription. a Monoliths of microporous aluminophosphates (AlPO 4-17 and AlPO 4-53) were structured by binder-free pulsed current processing. Such monoliths could be important for carbon capture from flue gas. The AlPO 4-17 and AlPO 4-53 monoliths exhibited a te...

The effect of residual or reinjected tumor tissues on specific host antitumor resistance has been studied with a syngeneic methylcholanthrene-induced fibrosarcoma. Sensitized mice showed a strong resistance to the growth of injected fibrosarcoma cells if the sensitizing tumor implants were removed before the time of challenge. If large sensitizing tumors were left in situ until after the challe...

The structural gene encoding the Rieske iron-sulfur protein from Thermus thermophilus HB8 has been cloned and sequenced. The gene encodes a protein of 209 amino acids that begins with a hydrophilic N-terminus followed by a stretch of 21 hydrophobic amino acids that could serve as a transmembrane helix. The remainder of the protein has a hydrophobicity pattern typical of a water-soluble protein....

Reaction of [Mo(pip),(CO),] (pip = piperidine) with (S, S)in acetonitrile gives readily [Mdq*-(S, SlXCO)J, isolated as [PPNl[Mo(n*-(S, S))(CO),] (PPN+= bis(triphenylphosphine)iminium; (S, S)-= pyrrolidine(1) or piperidine-1-carbodithioato (2)). The two compounds have been characterized by ejemental analysisd IR, nuclear magnetic resonance and X-ray crystallography. 1: monoclinic, P2,/n; a = 16....