NMR of petroleum cokes I: Relaxation studies and quantitative analysis of hydrogen by magnetic resonance

• Published in: Carbon (New York) Vol. 32; no. 1; pp. 31 - 40
• Main Authors: Michel, D., Pruski, M., Gerstein, B.C.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 1994; Elsevier Science
• Subjects: 1H NMR; Applied sciences; Constitution and properties of crude oils, shale oils, natural gas and bitumens. Analysis and characteristics; Crude oil, natural gas and petroleum products; Energy; ESR; Exact sciences and technology; Fuels; nuclear relaxation; Petroleum coke; spin counting; spin counting; 1H NMR; nuclear relaxation; ESR; Petroleum coke; Spin relaxation; Hydrogen; Nuclear relaxation; Magnetic resonance; EPR spectrometry; NMR spectrometry; Experimental study

A set of 15 petroleum cokes produced by delayed coking in a Mobil laboratory coker has been studied using solid state 1H NMR. From solid echo and free induction measurements, the concentrations of hydrogen as well as inter- and intramolecular second moments due to dipolar proton-proton interactions...