Study of Catalytic Cracking of Asphaltene in Near-Critical Water

Study of Catalytic Cracking of Asphaltene in Near-Critical Water

Type	Journal Article
Author	Jian Ping Yang
URL	http://www.scientific.net/AMR.860-863.1021
Volume	860-863
Pages	1021-1025
Publication	Advanced Materials Research
Date	12/2013
Abstract	Describes the use of a method of solvent division to separate asphaltene from Shengli heavy oil by n-heptane. Researchers determined 1HNMR and 13CNMR spectrum of asphaltene using a Bruker Avance 400 NMR spectrometer. Combining spectrometer results with the elemental analysis results, the aromatic-ring structure was determined to be the main structural composition in the asphaltene. Researchers catalyzed and cracked asphaltene with naphthenate nickel as catalytic cracking catalyst in near-critical water. They achieved a suitable reactional condition with the orthogonal experiment method, reaction temperature 300°C, the mass fraction of catalyst used 0.6%, reaction time 24h. By testing element content of cracked asphaltene, carbon element content had reduced 0.06%~0.80%; hydrogen element content had reduced by 0.74%~3.41%; oxygen element content had reduced by 3.12%~27.1%; nitrogen element content had reduced by 0.40%~13.47%; sulfur element content had reduced by 9.85%~31.26%.