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A novel intumescent flame retardant poly(phenyl phosphamide spirocyclic diethanolamine borate) (PPSDB) containing phosphorus, nitrogen and boron elements was synthesized successfully with diethanolamine borate and phenylphosphonic dichloride. The structure of PPSDB was characterized by infrared spectroscopy with Fourier transformation and nuclear magnetic resonance. As a new intumescent flame retardant,...
Carbon microfibers (CMFs) were synthesized directly from coal liquefaction residue (CLR) by arc-jet plasma method at atmospheric pressure, and were examined using scanning electron microscopy and EDX spectroscopy. It has been found that the as-synthesized CMFs are smooth in surface and quite uniform in diameter that is smaller than 1μm and centers at 700nm. The possible mechanism involved in the formation...
The reaction path of isoalkanes formation via CO 2 hydrogenation was studied over the Fe–Zn–Zr/HY composite catalyst, which gives high selectivity to isoalkanes. The results indicate that the reverse water–gas shift reaction is not the indispensable step for the synthesis of hydrocarbons. And i-C 4 (iso-butane) is formed from propylene and methanol through MTG (methanol to gasoline)...
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