aThere was also a sizeable drop in marginal and average PIT rates at higher levels of individual income and an overall decline in structural progressivity of the PIT systems. 也有相当大的下落在少量和平均坑率在更高的水平单独收入和一种整体衰落在坑系统的结构累进税。[translate] ...
A rate equation for the ammonia synthesis is given based on the assumption that the adsorption of molecular nitrogen on one site is the rate-determining step. The equation represents satisfactorily the experimental data.doi:10.1016/0021-9517(70)90189-2R. Brill...
The N≡N bond (225 kcal mol−1) in dinitrogen is one of the strongest bonds in chemistry therefore artificial synthesis of ammonia under mild conditions is a significant challenge. Based on current knowledge, only bacteria and some plants can synthesise ammonia from air and water at ambient...
catalysts approached to their states occurring during catalytic processes, show that surfaces are homogeneous; the logarithmic isotherm for adsorption equilibrium and Zeldovich-Roginskii exponential equation for chemisorption rates, observance of which is considered as the indication of surface heterogeneity, ...
The Rate Equation of Ammonia-Synthesis on Iron-Type Catalysts of Different Composition Investigations on the rate equation of ammonia synthesis on iron catalysts have been carried out. The results agree in a general way with the rate equation... Brill,R. - 《Journal of Chemical Physics》 被引...
Electrochemically converting nitrate, a widespread water pollutant, back to valuable ammonia is a green and delocalized route for ammonia synthesis, and can be an appealing and supplementary alternative to the Haber-Bosch process. However, as there are o
Equations 1 and 2 summed up together give the standard Gibbs free energy of formation of ammonia:(Equation 3)12N2+32H2↔NH3,Ecell(NH3)=−ΔGf(NH3)3F We choose to express ΔGf (kJ mol−1 NH3) as Ecell/V, where 3 is the number of electrons involved and F is the Faraday's ...
1918Fritz HaberGermanysynthesis of ammonia 1920Walther Hermann NernstGermanywork in thermochemistry 1921Frederick SoddyU.K.chemistry of radioactive substances; occurrence and nature of isotopes 1922Francis William AstonU.K.work with mass spectrograph; whole-number rule ...
The ammonothermal method is defined as employing a heterogeneous reaction in ammonia as one homogenous fluid close to or in supercritical state. Three types of milieus may be applied during ammonothermal synthesis: ammonobasic, ammononeutral or ammonoacidic, evoked by the used starting materials and...
-The synthesis of sucrose from glucose and fructose. -The production of ammonia in the Haber process. -The production of azo dyes from two aromatic rings bonding to a nitrogen atom, Ar-N. -The synthesis of slaked lime from calcium oxide and water. ...