首页   按字顺浏览 期刊浏览 卷期浏览 CHARACTERIZATION OF NICKEL AND VANADIUM COMPOUNDS IN TAR SAND BITUMEN BY UV-VIS SPECTRO...
CHARACTERIZATION OF NICKEL AND VANADIUM COMPOUNDS IN TAR SAND BITUMEN BY UV-VIS SPECTROSCOPY AND SIZE EXCLUSION CHROMATOGRAPHY COUPLED WITH ELEMENT SPECIFIC DETECTION

 

作者: JohnG. Reynolds,   EdwardL. Jones,   JiliA. Bennett,   WiltonR. Biggs,  

 

期刊: Fuel Science and Technology International  (Taylor Available online 1989)
卷期: Volume 7, issue 5-6  

页码: 625-642

 

ISSN:0884-3759

 

年代: 1989

 

DOI:10.1080/08843758908962261

 

出版商: Taylor & Francis Group

 

数据来源: Taylor

 

摘要:

Previously, we have examined the Ni and V in heavy crude oils, residua, and processed products by several metal speciation techniques to ascertain molecular structure and processing behavior. Two classes of metal compounds were found -metallopetroporphyrins and metallo-nonporphyrins - each having unique reactivity during processing. In efforts to better understand the binding of metals in the oil medium, we have now examined Ni and V in tar sand bitumens, the bitumen was solvent extracted from the sand matrix and was separated by column chromatography and the petro-porphyrin content was quantitated by UV-vis spectroscopy. The petroporphyrin contents ranged from virtually none to over 36% of the total metals. Asphalt Ridge (Utah) has primarily Ni petroporphyrins; Big Clifty (Kentucky) and Athabasca (Canada) have primarily V petroporphyrins; Arroyo Grande and McKittrick (California) have roughly equal amounts of both types; and Surmyside (Utah) has virtually none of either.

 

点击下载:  PDF (528KB)



返 回