relative molecular mass- (chemistry) the sum of the relative atomic masses of the constituent atoms of a molecule molecular weight mass- the property of a body that causes it to have weight in a gravitational field chemical science,chemistry- the science of matter; the branch of the natural ...
Naphtha is the feedstock for steam cracking and catalytic reforming of aromatics. Based on the molecular library and 42 groups of practical data including the properties of density, potential aromatic content, the weight fractions of PNA and carbon number distribution, a molecular reconstruction model ...
Ethylene production by steam cracking of normal paraffins A simulated moving bed adsorptive separation process for preparing the separate feed streams charged to naphtha reforming unit and a steam cracking unit has been developed. The feed stream to the overall unit is passed into the adsorptiv......
The previous analysis suggests that not a single HR–AFM image, but a 3D stack of constant–height images covering a range of relevant tip heights is needed to provide enough information on the molecular electronic charge distribution to disentangle the contribution of the bonding topology, the che...
2015). On the other hand, only very fresh emissions hold benzo[b]anthracene (naphthacene) and anthanthrene, both prone to fast decomposition (Wise et al. 1988; Dominguez et al. 2003; Kim et al. 2009). In fact, the occurrence of the two compounds was documented in exhausts but was ...
Iso-butene (iso-C4H8) is a crucial feedstock for the production of butyl rubber, tert-butanol, and methyl tert-butyl ether (MTBE), with an annual consumption exceeding 30 million tons1. Generally, the steam cracking of naphtha generates C4hydrocarbon mixtures containing 30~60% 1,3-butadiene ...
The primary ligand (HL) was derived from condensation of p-toluidine with 2-hydroxy-naphthalhyde. Three different N-heterocyclic compounds, 8-hydroxy-quinoline (HQ), 2-(1H-benzimidazol-2-yl)phenol (HB), and 2‐(4,5‐diphenyl‐1H‐imidazol‐2‐yl)phenol (HI), were used as secondary co...
Pradimicin A (PRM-A), an antifungal nonpeptidic benzonaphthacenequinone antibiotic (Mw = 8500), is the first archetype of this class containingd-alanine,d-xylose, 4,6-dideoxy-4-methylamino-d-galactose, and a substituted 5,6-dihydrobenzo[a]naphtacenequinone. ...
a maximum of 150 molecular weight, examples of which include alcohols such as methanol, ethanol, or the like, lubricants such as transformer oil, ketones such as methylethyl ketone or acetone, light oil, kerosene, gasoline, naphtha, ligroin, benzene, toluene, xylene, chlorinated solvent such as...
In the event the thioether phenolate is precipitated along with the salt of the replaced metal, it may be recovered by extracting the dried precipitate with naphtha then filtering and evap0 orating the naphtha from the filter. In place of the naphtha an alcohol may be used as a solvent. ...