Reference

Use of the structure-chemical reactivity data for development of new methods in petroleum heavy ends upgrading

Use of the structure-chemical reactivity data for development of new methods in petroleum heavy ends upgrading. Farcasiu, M.; Scott, E. J. Y.; LaPierre, R. B. (Cent. Res. Lab., Mobil Res. Dev. Corp., Princeton, NJ 08540, USA). Prepr. - Am. Chem. Soc., Div. Pet. Chem., 30(4), 672-8 (English) 1985. CODEN: ACPCAT. ISSN: 0569-3799. DOCUMENT TYPE: Journal CA Section: 51 (Fossil Fuels, Derivatives, and Related Products) Petroleum vacuum residues are 60-80% dealkylated by transalkylation with MePh [108-88-3] or o-xylene [95-47-6] in the presence of AlCl3 or CF3SO3H [1493-13-6]. This reaction yielded 10-34 wt.% (based on residue) distillates. The dealkylated residue requires the same amt. of H in hydrotreatment in the presence of Co-Mo catalysts as the untreated residue, but its desulfurization is deeper. The transalkylation of topped petroleums results in a redistribution of b.ps. with an increase in the quantity of medium-range products.

Superacids and their derivatives

Superacids and their derivatives. XI. Cyclooligomerization of ethylene oxide catalyzed by a solid superacid of Nafion-H. Kobayashi, Shiro; Saegusa, Takeo (Dep. Synth. Chem., Kyoto Univ., Kyoto 606, Japan).Several reagents with their cas registry numbers 63937-00-8 and 75-21-8 are used here. Polym. J. (Tokyo), 16(3), 293-6 (English) 1984. CODEN: POLJB8. ISSN: 0032-3896. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) Section cross-reference(s): 28 The formation of crown ethers in the cyclooligomerization of ethylene oxide [75-21-8] was more preferable with Nafion H [63937-00-8] as catalyst than with CF3SO3H [1493-13-6]. Nafion H could be used repeatly without decreasing catalyst activity. A mechanism of cyclooligomerization was proposed. .