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Sulfur-nitrogen

Asphaltenes have high concentrations of heteroelements sulfur, nitrogen, nickel and vanadium. Their content varies widely in petroleum oils (Table 1.5). They cause a number of problems throughout the petroleum industry. [Pg.13]

The presence of sulfur, nitrogen, halogens, etc. can interfere with the test. After pyrolysis, it is necessary to eliminate the following components ... [Pg.30]

Vacuum distillation of the atmospheric residue complements primary distillation, enabli r.ecoyery of heavy distillate cuts from atmospheric residue that will un r o further conversion or will serve as lube oil bases. The vacuum residue containing most of the crude contaminants (metals, salts, sediments, sulfur, nitrogen, asphaltenes, Conradson carbon, etc.) is used in asphalt manufacture, for heavy fuel-oil, or for feed for others conversion processes. [Pg.367]

Its purpose is to partially convert heavy fractions highly contaminated by natural compounds such as sulfur, nitrogen, metals Ni, V, and asphaltenes and to prepare feedstocks for deeper conversion or to produce low-sulfur fuel-oil. [Pg.400]

Residual fuel-oil represented more than 20 to 25% of the crude and the content in pollutants (sulfur, nitrogen, metals) increased. [Pg.408]

Heavy residue conversion is linked to the demand for high quality diesel motor fuel (aromatics content 10%, cetane number 55) as well as to the demand for production of light fuel-oil having very low sulfur, nitrogen and metal contents. [Pg.411]

Chemical composition does not generally come into play, except for the case where it is necessary to establish maximum specifications for undesirable compounds such as sulfur, nitrogen, and metals, or even more unusually, certain compounds or families of compounds such as benzene in premium gasolines. By tradition, the refiner supposedly possesses numerous degrees of freedom to generate products for which the properties but not the composition are specified. [Pg.484]

The products manufactured are predominantiy paraffinic, free from sulfur, nitrogen, and other impurities, and have excellent combustion properties. The very high cetane number and smoke point indicate clean-burning hydrocarbon Hquids having reduced harmful exhaust emissions. SMDS has also been proposed to produce chemical intermediates, paraffinic solvents, and extra high viscosity index (XHVI) lubeoils (see Lubrication and lubricants) (44). [Pg.82]

Fuel Carbon Hydroge Sulfur Nitrogen Oxygen Ash Moistu hhv, m... [Pg.142]

It is easy to reduce anhydrous rare-earth hatides to the metal by reaction of mote electropositive metals such as calcium, lithium, sodium, potassium, and aluminum. Electrolytic reduction is an alternative in the production of the light lanthanide metals, including didymium, a Nd—Pt mixture. The rare-earth metals have a great affinity for oxygen, sulfur, nitrogen, carbon, silicon, boron, phosphoms, and hydrogen at elevated temperature and remove these elements from most other metals. [Pg.541]

J. D. Morrison and J. W. ScoXt, Asymmetric Synthesis, Vol. 4, The Chiral Carbon Pool and Chiral Sulfur, Nitrogen, Phosphorus, and Silicon Centers, Academic Press, Inc., Odando, Fla., 1984. [Pg.264]

Census division state Sulfur Nitrogen Carbon Sulfur Nitrogen Carbon Nitrogen Carbon Sulfur Nitrogen Carbon... [Pg.90]

Impurities. The three categories of potential pollutants in coal are sulfur, nitrogen, and ash. Sulfur and ash are associated with both the mineral and organic portions of coal, whereas nitrogen is mainly associated with the organic matter (4). [Pg.252]

Ultimate analysis-an analysis to determine the amounts of basic feed constituents. These constituents are moisture, oxygen, carbon, hydro- gen, sulfur, nitrogen, and ash. In addition, it is typical to determine chloride and other elements that may contribute to air emissions or ash- disposal problems. Once the ultimate analysis has been completed, Dulong s formula can be used to estimate the heating value of the sludge, Dulong s formula is ... [Pg.559]

Quite a number of mixed sulfur-nitrogen macrocycles have been prepared, but these have largely been by the methods outlined in Chaps. 4 and 5 for the respective heteroatoms. An alternative method, involves the formation of a Schiff base, followed by reduction to the fully saturated system, if desired. An interesting example of the Schiff base formation is found in the reaction formulated in (6.12). Dialdehyde 14 is added to ethylenediamine in a solution containing ferrous ions. Although fully characterized, the yield for the reaction is not recorded. To avoid confusion with the original literature, we note the claim that the dialdehyde [14] was readily prepared in good yield by reaction of the disodium salt of 3-thiapentane-l, 5-diol . The latter must be the dithiol rather than the diol. [Pg.272]

Chapter 5 Compounds which contain either an ester or an amide link in a single macrocyclic ring. This includes lactones, lactams, carbonates, carbamates, ureas, phosphates, etc. including sulfur, nitrogen and other atoms in the ring. [Pg.426]

Volatile organic compounds (VOCs) include organic compounds with appreciable vapor pressure. They make up a major class of air pollutants.I his class includes not only pure hydrocarbons but also partially oxidized hydrocarbons (organic acids, aldehydes, ketones), as well as organics containing chlorine, sulfur, nitrogen, or other atoms in the molecule. [Pg.1297]

On the other hand, oxidizing fluonnating agents like silver difluoride, xenon difluoride, or bromine trifluoride replace one chlorine group and then cleave the sulfur-nitrogen bond [56],... [Pg.190]

The replacement of a substituent on an aromauc nng by a nucleophile is termed arylaUon. This chapter considers the replacement by nucleophihc oxygen, sulfur, nitrogen, and carbon of aromatic fluonne atoms, which are often activated by electron-withdrawing groups. [Pg.501]


See other pages where Sulfur-nitrogen is mentioned: [Pg.76]    [Pg.116]    [Pg.96]    [Pg.184]    [Pg.416]    [Pg.261]    [Pg.237]    [Pg.477]    [Pg.206]    [Pg.220]    [Pg.335]    [Pg.41]    [Pg.308]    [Pg.224]    [Pg.531]    [Pg.286]    [Pg.149]    [Pg.2372]    [Pg.91]    [Pg.93]    [Pg.94]    [Pg.620]    [Pg.60]    [Pg.69]    [Pg.62]    [Pg.271]    [Pg.271]    [Pg.1]    [Pg.2]   
See also in sourсe #XX -- [ Pg.254 ]




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Addition of Carbon, Oxygen, Nitrogen, and Sulfur Nucleophiles

Alkenes nitrogen and sulfur

Alkylation of nitrogen compounds by sulfuric esters

Aromaticity in Planar Sulfur-Nitrogen Rings

Arsenic, Halogen, Phosphorus, Sulfur, Selenium and Nitrogen Containing Compounds

Atmospheric Reactions of Selected Nitrogen and Sulfur Compounds

B Qualitative Analysis for Halogens, Sulfur, and Nitrogen

Bicyclic carbon-sulfur-nitrogen rings

Bidentates nitrogen-sulfur ligands

Binary Cyclic Nitrogen-Sulfur Anions

Bonding in Sulfur-Nitrogen Compounds Comparison with Organic Systems

Busby, R. E., Thiadiazines with Adjacent Sulfur and Nitrogen Ring Atoms

CNS analyzer for the determination of total carbon, nitrogen, and sulfur

Carbon, Nitrogen, Oxygen, Phosphorus, and Sulfur

Carbon, Nitrogen, and Sulfur

Carbon-nitrogen-oxygen-sulfur rings

Carbon-nitrogen-phosphorus-sulfur-metal rings

Carbon-nitrogen-sulfur rings

Carbon-nitrogen-sulfur-metal rings

Carbon—nitrogen-sulfur/selenium rings

Changing Patterns of Nitrogen and Sulfur Deposition

Chirality at Nitrogen, Phosphorus, and Sulfur

Compounds of sulfur and selenium with nitrogen

Cryptands Containing Sulfur and Nitrogen in the Bridges

Cyclic Sulfur-Nitrogen Compounds

Cyclic monosaccharides having nitrogen or sulfur in the ring

Cyclic nitrogen-sulfur anions

Diamonds carbon:nitrogen:sulfur

Direct effects sulfur nitrogen compounds

Displacement of nitrogen, carbon and sulfur functions

Eight-Membered Ring Preserved Substitution at Nitrogen, Sulfur, and Carbon

Electrophilic sulfur, nitrogen, phosphorus and arsenic

Fluorine-sulfur compounds with nitrogen

Four-membered Heterocycles containing a Single Nitrogen, Oxygen or Sulfur Atom

Halogen nitrogen—sulfur bonds

Heterocycles can have many nitrogens but only one sulfur or oxygen in any ring

Hybridization of Nitrogen, Oxygen, Phosphorus, and Sulfur

Hydrogen iodide sulfur-nitrogen compounds

Hydrogen oxygen/nitrogen/sulfur content

IV Nitrogen and Sulfur Compounds

Interhalogens nitrogen—sulfur bonds

Iodides sulfur-nitrogen compounds

Metal nitrogen—sulfur bonds

Mixed Sulfur-Nitrogen Macrocycles

Mixed nitrogen-sulfur ligands

Monosaccharides cyclic, having nitrogen or sulfur in the

Nitrogen and Sulfur Heterocycles

Nitrogen and sulfur atoms

Nitrogen sulfur chlorides

Nitrogen sulfur compounds with

Nitrogen sulfur oxide

Nitrogen sulfur—oxygen bonds

Nitrogen, Phosphorus, and Sulfur

Nitrogen, correlation between sulfur

Nitrogen, sulfur and oxygen

Nitrogen, sulfur and oxygen compounds

Nitrogen-Sulfur-Fluorine Ions

Nitrogen-sulfur bond

Nitrogen-sulfur bond formation

Nitrogen-sulfur bond, cleavage

Nitrogen-sulfur complexes

Nitrogen-sulfur compounds formation

Nitrogen-sulfur ligands

Nitrogen-sulfur macrocycles

Nitrogen-sulfur systems

Nitrogen-sulfur-containing ligands

Nitrogen—oxygen bonds sulfur halides

Nitrogen—silicon bonds sulfur halides

Nitrogen—sulfur bonds elemental halogens

Nitrogen—sulfur bonds hydrogen halides

Nitrogen—sulfur bonds metal halides

Nitrogen—sulfur bonds phosphorus halides

Nonmetal Nitrogen Oxygen Phosphorus Sulfur

Nucleophilic Substitution at the Nitrogen, Phosphorus, and Sulfur Centers

Other cyclic sulfur-nitrogen compounds

Oxidative cleavage nitrogen and sulfur functionalization

Paulsen, H., and Todt, K., Cyclic Monosaccharides Having Nitrogen or Sulfur

Paulsen, H., and Todt, K., Cyclic Monosaccharides Having Nitrogen or Sulfur in the Ring

Phosphorus-nitrogen-sulfur rings

Planar sulfur-nitrogen chains

Polymers Containing Oxygen, Nitrogen, Silicon, and Sulfur in the Backbone

Preparation of RMgX, where X is an oxygen, nitrogen or sulfur ligand

Propylene-nitrogen oxides-sulfur

Protons on Oxygen, Nitrogen, and Sulfur Atoms

Reactions with nitrogen—sulfur bonds

Ruthenium complexes nitrogen-sulfur ligands

Selected Nitrogen and Sulfur Compounds

Selenium nitrogen—sulfur bonds

Subject nitrogen—sulfur bonds

Substrates Containing Nitrogen, Sulfur or Phosphorous

Sulfur -nitrogen polymers

Sulfur Nitrogen Fluorine Compounds

Sulfur and Nitrogen Compounds

Sulfur and Nitrogen Derivatives

Sulfur and nitrogen dioxides

Sulfur and nitrogen removal

Sulfur compounds, of nitrogen

Sulfur compounds, of nitrogen nomenclature

Sulfur dioxide nitrogen oxides

Sulfur nitrogen compounds

Sulfur nitrogen fluorides

Sulfur nitrogen heterocydes

Sulfur nitrogen release from

Sulfur oxides, compared with nitrogen analogs

Sulfur silicon—nitrogen bonds

Sulfur, Oxygen and Nitrogen Molar Balances

Sulfur- and 3-Nitrogen-Substituted Cephems

Sulfur-Nitrogen Heterocycles

Sulfur-Nitrogen Rings Containing Exocyclic Oxygen

Sulfur-and nitrogen-containing compounds

Sulfur-nitrogen anions

Sulfur-nitrogen bond forming reaction

Sulfur-nitrogen bond, electrostatic

Sulfur-nitrogen bond, strength

Sulfur-nitrogen bonds, bent

Sulfur-nitrogen bonds, dissociation energies

Sulfur-nitrogen bonds, reductive cleavage

Sulfur-nitrogen bonds, rotation barrier

Sulfur-nitrogen cations and anions

Sulfur-nitrogen chains

Sulfur-nitrogen chelates

Sulfur-nitrogen compounds Subject

Sulfur-nitrogen compounds acid salts

Sulfur-nitrogen compounds acids

Sulfur-nitrogen compounds ammonia

Sulfur-nitrogen compounds complex hydrides

Sulfur-nitrogen compounds hydrogen

Sulfur-nitrogen compounds hydrogen sulfide

Sulfur-nitrogen compounds methane

Sulfur-nitrogen compounds reaction with, phosgene

Sulfur-nitrogen compounds reactions

Sulfur-nitrogen compounds reactions with

Sulfur-nitrogen compounds tetrasulfur tetranitride

Sulfur-nitrogen compounds thiols

Sulfur-nitrogen compounds, bonding

Sulfur-nitrogen halides

Sulfur-nitrogen radicals

Sulfur-nitrogen rings

Sulfur-nitrogen rings electronic structure/aromaticity

Sulfur-nitrogen rings unsaturated

Sulfur-nitrogen-halogen compounds

Sulfur-nitrogen-oxygen compounds

Sulfur-nitrogen-oxygen compounds amides

Sulfur-nitrogen-phosphorus polymers

Sulfur-nitrogen-phosphorus-containing

Sulfur-nitrogen-phosphorus-containing polymers

Sulfur/nitrogen-centered heterocyclic

Sulfur/nitrogen-centered heterocyclic radicals

Sulfur/nitrogen-centered heterocyclic radicals-thiazyls

THE NITROGEN AND SULFUR SOURCE

Tellurium-sulfur-nitrogen chlorides

Tensile strength of radiation cured purified natural rubber, o, sulfur A, peroxide , EB irradiation in nitrogen at 2.5 kGys

Tetrasulfur Tetranitride and Related Sulfur-Nitrogen Compounds

Thiadiazines with adjacent sulfur and nitrogen

Thiadiazines with adjacent sulfur and nitrogen ring atoms

Thiazoles and Related Sulfur-Nitrogen-Containing Heterocycles

Three Nitrogen Atoms and One Sulfur Atom

Transboundary transport of sulfur and nitrogen compounds in the Eurasian continent

Two Nitrogen Atoms and One Sulfur Atom

Unsaturated Sulfur-Nitrogen Ring Systems

Utilization of Nitrogen, Sulfur, and Phosphorus

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