Nitrogen present

The quantity coming from air is practically invariant and corresponds to a level approaching 130 mg/Nm. Nitrogen present in the fuel is distributed as about 40% in the form of NO and 60% as N2. With 0.3% total nitrogen in the fuel, one would have, according to stoichiometry, 850 mg/Nm of NO in the exhaust vapors. Using the above hypothesis, the quantity of NO produced would be (//-U... 

The stronger directing effects present in the indoline ring can sometimes be used to advantage to prepare C-substituted indoles. The aniline type of nitrogen present in indoline favours 5,7-substitution. After the substituent is introduced the indoline ring can be aromatized by dehydrogenation (see Section 15.2 for further discussion). A procedure for 7-acylation of indoline... 

Essential for synthesis considerations is the abiUty to determine the amount of ammonia present ia an equiUbrium mixture at various temperatures and pressures. ReHable data on equiUbrium mixtures for pressures ranging from 1,000 to 101,000 kPa (10 —1000 atm) were developed early on (6—8) and resulted ia the determination of the reaction equiUbrium constant (9). Experimental data iadicates that is dependent not only on temperature and pressure, but also upon the ratio of hydrogen and nitrogen present. Table 3 fists values for the ammonia equilibrium concentration calculated for a feed usiag a 3 1 hydrogen to nitrogen ratio and either 0 or 10% iaerts (10). 

Recovering ammonia as a by-product from other processes accounted for less than 1% of the total U.S. ammonia production in 1987. The principal source of by-product ammonia is from the coking of coal. In the coking operation, about 15—20% of the nitrogen present in the coal is Hberated as ammonia and is recovered from the coke oven gas as ammonium sulfate, ammonia Hquor, and ammonium phosphates. The recovery product depends on the scmbbing medium employed, sulfuric acid, milk of lime, and phosphoric acid, respectively. Ammonium sulfate recovery by the so-called semidirect process, is most widely employed. 

Physicochemical Aspects. Other than toxicity toward insects, the protein of the crystals has no unique characteristics not shared by other protein molecules. It contains between 17.5 (15) and 18% (1) nitrogen, present in 17 to 19 amino acids (Table I), none of which are unusual or present in any unusual concentration. The protein is sensitive to heat and when dissolved (0.01N hydroxide) absorbs characteristically at the 280-m/ maximum displayed by aromatic amino acids. 

Nitrogen Dioxide. Nitrogen dioxide can be formed in the gasifier from the nitrogen present in the coal. Since N02 is an acid gas, it was included in the study as a potential poison. This study was conducted with C150-1-03 in the electric furnace reactor unit. The catalyst was tested under primary wet gas conditions with up to 8 ppm N02 in the dry feed gas. Table XIV provides a synopsis of the test results. 

The feasibility of the fast neutron bulk activation detection system and of other bulk nitrogen measurement systems is in serious question. The nitrogen present in innocent, common, and completely legitimate materials to be found in suitcases varies sufficiently that the estimated minimum detectable amount of explosive in this system is around 25 to 50 sticks of 40% dyji3=... 

Since the ratio of moles of lithium present to moles of nitrogen present is 6 1, just as is required for the balanced equation, cither reactant may be used. 

These protocols were applied to pyridines, quinolines, and naphthyridines. They are compatible with other functional groups, for instance, acid derivatives. Dehydration can be effected by a chemical process (chlorinating agents), or simply by heating. Method A3 generally required harsh conditions, since in most examples no base was added for HC1 consumption, therefore lowering the reactivity of the pyridine nitrogen, present as its hydrochloride salt. 

If A ml of acid solution containing B mol l-1 is required to neutralize the ammonia formed from a given amount of sample, the amount of nitrogen present in the sample is ... 

In foodstuffs preserved by smoking (such as fish and meat products) oxides of nitrogen present in the smoke act as nitrosating agents. 

Nagao has disclosed bifunctional chiral sulfonamide 69 as being effective for the thiolytic ASD of meso-cyclic anhydrides in up to 98% ee when employed at the 5 mol% level for 20 h at room temperature in ether [228], Catalyst 69 is a 1,2-diamine derivative in which one of the nitrogens presents as an acidic NH group (part of an electron deficient aryl sulfonamide) and the other as a nucleophihc/basic teri-amine group with the intention to act synergistically in activation of the substrate carbonyl function and thiol nucleophile respectively (Fig. 16) [228],... 

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