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PHYSICO-CHEMICAL AND COMPOSITIONAL ASPECTS OF BITUMEN BEARING CRUDES AND THEIR INSTRUMENTAL CHARACTERISATION

IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun


Field	Value

Creator	Jain,P.K Tyagi,O.S Singh,Himmat

Date	2010-05-24T10:18:36Z 2010-05-24T10:18:36Z 2010-05-24T10:18:36Z

Identifier	PETROLEUM SCIENCE AND TECHNOLOGY, 16(5&6),567-582 (1998) http://hdl.handle.net/123456789/595

Description	In India the production of bitumen is primarily based on middle-east crude oils which normally have a right balance of bitumen constituents (Le. asphaltenes and maltenes). In general, bitumens obtained from such crude oil sources have a good balance of rheological and physico-chemical properties at both low and high temperatures. Bitumen is a complex mixture consisting of compounds ranging from non-polar aliphatic and naphthenic hydrocarbons to highly polar aromatic molecules containing heteroatoms such as oxygen, nitrogen, and sulfur; and, several attempts have been reported to fractionate and characterise bitumens into broadly defined compound groups, The separation method adopted in the present study is based on the polarity of the constituent compounds comprising the bitumen. The separated groups of compounds which progressively increase in their polarities are saturates, aromatics, resins and asphaltenes. In the present study three important (middle-east) bitumen bearing short residues have been selected and their detailed physico-chemical as well elemental compositions have been reported. Each short residue has been characterised by NMR and FT-IR spectroscopy methods and the information obtained from these analyses have been used to estimate several average structural parameters. Ultimate compositions have been determined for deducing the average molecular formulae.

Language	en_US

Subject	Bitumen Airblowing Characterisation FTIR NMR Shortresidue

Title	PHYSICO-CHEMICAL AND COMPOSITIONAL ASPECTS OF BITUMEN BEARING CRUDES AND THEIR INSTRUMENTAL CHARACTERISATION

Type	Article