Formation of low molecular weight heterocycles and polycyclic aromatic compounds (PACs) in the pyrolysis of α-amino acids

2003 ◽  
Vol 66 (1-2) ◽  
pp. 97-121 ◽  
Author(s):  
Ramesh K. Sharma ◽  
W.Geoffrey Chan ◽  
Jeffrey I. Seeman ◽  
Mohammad R. Hajaligol
Keyword(s):  
Amino Acids ◽  
Molecular Weight ◽  
Aromatic Compounds ◽  
Polycyclic Aromatic Compounds ◽  
Low Molecular Weight ◽  
Polycyclic Aromatic

scholarly journals Effect of WC/Ni–Cr additive on changes in the composition of an atmospheric residue in the course of cracking

2019 ◽  
Vol 17 (2) ◽  
pp. 499-508 ◽  
Author(s):  
Galina S. Pevneva ◽  
Natalya G. Voronetskaya ◽  
Nikita N. Sviridenko ◽  
Anatoly K. Golovko
Keyword(s):  
Molecular Weight ◽  
Tungsten Carbide ◽  
Aromatic Hydrocarbons ◽  
Aromatic Compounds ◽  
Low Molecular Weight ◽  
Nickel Chromium ◽  
Atmospheric Residue ◽  
Sulfur Containing ◽  
Catalytic Additive ◽  
Sulfur Containing Compounds

AbstractThe paper presents the results of investigation of changes in the composition of hydrocarbons and sulfur-containing compounds of an atmospheric residue in the course of cracking in the presence of a tungsten carbide–nickel–chromium (WC/Ni–Cr) catalytic additive and without it. The cracking is carried out in an autoclave at 500 °C for 30 min. The addition of the WC/Ni–Cr additive promotes the deepening of reactions of destruction not only of resins and asphaltenes, but also high molecular weight naphthene-aromatic compounds of the atmospheric residue. It is shown that the content of low molecular weight C9–C17 n-alkanes and C9–C10 alkylbenzenes rose sharply in the products of cracking with addition of WC/Ni–Cr in comparison with those produced without the additive. Alkyl- and naphthene-substituted aromatic hydrocarbons of benzene, naphthalene, phenanthrene series, polyarenes, benzo- and dibenzothiophenes are identified.

Rapid Construction of Fold-Line-Shaped BN-Embedded Polycyclic Aromatic Compounds through Diels–Alder Reaction

2019 ◽  
Vol 85 (1) ◽  
pp. 241-247
Author(s):  
Peng-Fei Zhang ◽  
Fang-Dong Zhuang ◽  
Ze-Hao Sun ◽  
Yang Lu ◽  
Jie-Yu Wang ◽  
...  
Keyword(s):  
Aromatic Compounds ◽  
Alder Reaction ◽  
Diels Alder ◽  
Polycyclic Aromatic Compounds ◽  
Diels Alder Reaction ◽  
Fold Line ◽  
Rapid Construction ◽  
Polycyclic Aromatic
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