Characterization of nitrogen compounds in coker gas oil by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry and Fourier transform infrared spectroscopyReportar como inadecuado




Characterization of nitrogen compounds in coker gas oil by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry and Fourier transform infrared spectroscopy - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Applied Petrochemical Research

, Volume 4, Issue 4, pp 417–422

First Online: 10 September 2014Received: 04 June 2014Accepted: 29 July 2014

Abstract

In this study, the classes and structures of nitrogen species in coker gas oil CGO are characterized by electrospray ionization ESI Fourier transform ion cyclotron resonance mass spectrometry FT-ICR MS combined with Fourier transform infrared FT-IR spectroscopy. The results demonstrate that the m-z of basic and non-basic nitrogen compounds ranges from 180 to 560 and from 200 to 460, respectively. Six basic nitrogen compounds, N1 a molecule contains one nitrogen atom, similarly hereinafter, N1O1, N1O1S1, N1O2, N1S1, and N2, are identified by their positive-ion mass spectra, and four non-basic nitrogen compounds, N1, N1O1, N1S1, and N2, are characterized by their negative-ion mass spectra. Among these nitrogen compounds, the N1 class species are the most predominant. Combined with the data of ESI FT-ICR MS and FT-IR, the basic N1 class species are likely pyridines, naphthenic pyridines, quinolines, and benzoquinolines. The most non-basic N1 class species are derivatives of benzocarbazole. The N2 class species are likely amphoteric molecules with pyridine and pyrrole core structures.

KeywordsNitrogen compounds Coker gas oil ESI FT-ICR MS FT-IR Characterization  Download fulltext PDF



Autor: Chen Xiaobo - Liu Yibin - Wang Jin - Shan Honghong - Yang Chaohe - Li Chunyi

Fuente: https://link.springer.com/







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