Adsorption of nitrogen compounds from diesel fuels over alumina-based adsorbent towards ULSD production

The aim of this work is to estimate some nitrogen (N)-adsorption properties and the N-adsorption capacity (q) required for commercial application in the ultra-low sulfur diesel production. Hydroxyl (OH) groups and interactions among the commercial adsorbent Selexsorb® CDX (CDX) and pyridine and indo...

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Bibliographic Details
Published in:Petroleum science and technology 2017-02, Vol.35 (4), p.392-398
Main Authors: Laredo, Georgina C., Vega-Merino, Pedro M., Pérez-Romo, Patricia, Navarrete-Bolaños, Juan, Trejo-Zárraga, Fernando
Format: Article
Language:English
Subjects:
Adsorbents
Adsorption
Aluminum oxide
Contact
Crude oil
diesel
Diesel fuels
Fourier analysis
Fourier transforms
FTIR
Infrared spectroscopy
Nitrogen
Nitrogen compounds
Spectroscopic analysis
Sulfur
ULSD
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Summary:The aim of this work is to estimate some nitrogen (N)-adsorption properties and the N-adsorption capacity (q) required for commercial application in the ultra-low sulfur diesel production. Hydroxyl (OH) groups and interactions among the commercial adsorbent Selexsorb® CDX (CDX) and pyridine and indole were studied by means of Fourier transform infrared spectroscopy. The adsorption of N-compounds from three diesel fuels over CDX was estimated at CDX/fuel ratio: 0.01-0.09 g/g, Contact time: 1-60 m, 303 K, and 0.078 MPa in a batch setup. It was concluded that an appropriate N-adsorbent should have high densities of suface OH groups and Lewis and Brønsted strong-acid sites and a q ≥ 0.70 mmol/g.
ISSN:1091-6466
1532-2459
DOI:10.1080/10916466.2015.1021012