The properties of field electron emitters made iridium and rhenium, whose surface is coated with carbon by decomposition benzene molecules on the surface, are studied. stability emission characteristics obtained to adsorption residual gas ion bombardment shown. coating either in form a monoatomic graphene film flat faces emitter, or graphite growths. localized edges corners faceted outgrowth. A...

Abstract Homoleptic cyanide compounds exist of almost all main group elements. While the alkali metals and alkaline earth form salts, cyanides lighter elements occur mainly as covalent compounds. This review gives an overview status quo element cyanido complexes. Information about syntheses are included well applications, special substance properties, bond lengths, spectroscopic characteristics...

Novel inorganic alkali and alkaline earth hydrides of the f o r m u l a MH *, MH 2 * , and MH X * wherein M is the metal, X , is a halide, and H * comprises a novel high binding energy hydride ion were synthesized in a high temperature gas cell by reaction of atomic hydrogen with a catalyst and MH , MH 2 , or MX corresponding to an alkali metal or alkaline e a r t h metal compound, respectively...

With the increasingly strict environmental protection regulations and improvement of people’s awareness protection, serious pollution caused by soot particles from diesel vehicle exhaust has attracted attention. Catalytic purification technology is one most effective ways to eliminate research development highly catalysts key factors for determining application this technology. In...

The influence of the nature of the cation on the interaction of the silicoaluminophosphate SAPO-34 with small hydrocarbons (ethane, ethylene, acetylene, propane, propylene) is investigated using periodic density-functional theory calculations including a semi-empirical dispersion correction (DFT-D). Initial calculations are used to evaluate which of the guest-accessible cation sites in the chab...

The relative permeability of endplate channels to monovalent and divalent metal ions was determined from reversal potentials. Thallium is the most permeant ion with a permeability ratio relative to Na+ of 2.5. The selectivity among alkali metals is weak with a sequence, Cs+ greater than Rb+ greater than K+ greater than Na+ greater than Li+, and permeability ratios of 1.4, 1.3, 1.1, 1.0, and 0.9...